Developer’s Guide

Module contents

package supplying optical glass data from vendor supplied data

The opticalglass package currently supports the following vendors:

CDGM

Hikari

Hoya

Ohara

Schott

Sumita

The spreadsheets from the vendors are in the data directory. They are imported using pandas into DataFrame instances, one per catalog. The data in the catalog DataFrame is used unchanged from the import; only the data headers are modified for consistency across catalogs. The create_glass() function returns a glass object, given the glass and catalog names.

An interface to the RefractiveIndex.INFO database is provided by the rindexinfo module. read_rii_file() and read_rii_url() return the native yaml representation used by RefractiveIndex.INFO. The create_material() function returns an object depending on the yaml database specification. If the material is specified by an interpolating polynomial, a RIIMedium instance is returned. If the material is specified by a set of data points, an InterpolatedMedium instance is returned.

A set of legacy catalogs, circa 1980, is available via the Robb1983Catalog class. The data used by this class is from the 1983 paper by Paul N. Robb and R. I. Mercado, Calculation of refractive indices using Buchdahl’s chromatic coordinate . The catalogs include:

Hoya

Ohara

Schott

Chance

Corning-France

The authors fitted a Buchdahl quadratic model to the glass data that has a standard deviation of 0.00002 and a maximum absolute error of 0.0001 in the visible spectral region.

Fitting and modeling glass data using the Buchdahl chromatic coordinate is supported in the buchdahl module.

Submodules

opticalmedium

Module for simple optical media definitions

glass_encode(n, v)

glass_decode(gc)

class OpticalMedium(*args, **kwargs)

Bases: Protocol

Protocol for media with optical properties, e.g. refractive index.

abstract name() → str

abstract catalog_name() → str

abstract calc_rindex(wv_nm: float | ndarray[Any, dtype[_ScalarType_co]]) → float | ndarray[Any, dtype[_ScalarType_co]]

returns the interpolated refractive index at wv_nm

Parameters:: wv_nm (float or numpy array) – wavelength in nm for the refractive index query
Returns:: the refractive index at wv_nm
Return type:: float or numpy array

abstract meas_rindex(wvl: str) → float

returns the measured refractive index at wvl

Parameters:: wvl – a string with a spectral line identifier
Returns:: the refractive index at wvl
Return type:: float
Raises:: KeyError – if wvl is not in the spectra dictionary

rindex(wvl: float | str) → float

returns the interpolated refractive index at wvl

Parameters:: wvl – either the wavelength in nm or a string with a spectral line identifier. for the refractive index query
Returns:: the refractive index at wv_nm
Return type:: float
Raises:: KeyError – if wvl is not in the spectra dictionary

transmission_data(thi: float) → Tuple[ndarray[Any, dtype[_ScalarType_co]], ndarray[Any, dtype[_ScalarType_co]]]

returns an array of transmission data for the glass

Returns: np.arrays of wavelength and transmission for thi mm sample

class Air(*args, **kwargs)

Bases: OpticalMedium

Optical definition for air (low fidelity definition)

name() → str

catalog_name() → str

calc_rindex(wv_nm: float | ndarray[Any, dtype[_ScalarType_co]]) → float | ndarray[Any, dtype[_ScalarType_co]]

returns the interpolated refractive index at wv_nm

Parameters:: wv_nm (float or numpy array) – wavelength in nm for the refractive index query
Returns:: the refractive index at wv_nm
Return type:: float or numpy array

meas_rindex(wvl: str) → float

returns the measured refractive index at wvl

Parameters:: wvl – a string with a spectral line identifier
Returns:: the refractive index at wvl
Return type:: float
Raises:: KeyError – if wvl is not in the spectra dictionary

rindex(wvl: str) → float

returns the interpolated refractive index at wvl

Parameters:: wvl – either the wavelength in nm or a string with a spectral line identifier. for the refractive index query
Returns:: the refractive index at wv_nm
Return type:: float
Raises:: KeyError – if wvl is not in the spectra dictionary

class ConstantIndex(nd, lbl, cat='')

Bases: OpticalMedium

Constant refractive index medium.

name()

catalog_name()

calc_rindex(wv_nm_)

returns the interpolated refractive index at wv_nm

Parameters:: wv_nm (float or numpy array) – wavelength in nm for the refractive index query
Returns:: the refractive index at wv_nm
Return type:: float or numpy array

meas_rindex(wvl)

returns the measured refractive index at wvl

Parameters:: wvl – a string with a spectral line identifier
Returns:: the refractive index at wvl
Return type:: float
Raises:: KeyError – if wvl is not in the spectra dictionary

class InterpolatedMedium(label, pairs=None, wvls=None, rndx=None, kvals=None, kvals_wvls=None, cat='')

Bases: OpticalMedium

Optical medium defined by a list of wavelength/index pairs

label: required string identifier for the material

wvls: list of wavelengths in nm, used as x axis

rndx: list of refractive indices corresponding to the values in wvls

kvals_wvls: list of wavelengths in nm, used as x axis

kvals: list of absorption coefficents corresponding to the values in kvals_wvls

rindex_interp: the refractive index interpolation function

kvals_interp: the kval interpolation function

sync_to_restore() → None: rebuild interpolating function

update() → None

glass_code() → str

name() → str

catalog_name() → str: returns the glass catalog name

calc_rindex(wv_nm: float | ndarray[Any, dtype[_ScalarType_co]]) → float | ndarray[Any, dtype[_ScalarType_co]]: returns the interpolated refractive index at wv_nm

meas_rindex(wvl: str) → float

returns the measured refractive index at wvl

For InterpolatedMedium the measured index isn’t directly known. The calculated index is used instead. Calling rindex handles the spectral line conversion.

transmission_data(thi=10.0)

returns an array of transmission data for the glass

Returns: np.arrays of wavelength and transmission for thi mm sample

glass

Support for Glass catalogs and instances

The glass module contains the two base classes fundamental to the opticalglass module. The GlassCatalog class implements as much of the common functionality needed for access to the catalog data as possible.

The Glass is an interface to the data for a particular glass in a catalog. The primary function of interest for optical calculations is rindex() which returns the refractive index at the input wavelength (nm).

A factory interface to Glass creation is the function create_glass() that returns a Glass instance of the appropriate catalog type, given the glass and catalog names.

get_filepath(fname)

given a (spreadsheet) file name, return a complete Path to the file

The data files included with the opticalglass package are located in a data directory in the package hierarchy.

opticalglass/
    opticalglass/
        data/
            fname

Parameters:: fname (str) – the spreadsheet filename, including extender
Returns:: full path including filename for requested spreadsheet
Return type:: str

get_glass_map_arrays(cat, d_str, F_str, C_str, **kwargs)

return index and dispersion data arrays for input spectral range

Parameters:

cat – glass catalog instance, source for returned data
d_str (str) – central wavelength string
F_str (str) – blue end wavelength string
C_str (str) – red end wavelength string
partials (tuple) – kwarg if present, 2 wvls, wl4 and wl5, wl4 < wl5

Returns:

index, V-number, partial dispersion, Buchdahl coefficients, and glass names

glass_catalog_factory(cat_name, mod_name=None, cls_name=None)

Function returning a glass catalog instance.

Parameters:

catalog – name of supported catalog (CDGM, Hoya, Ohara, Schott)
mod_name – the module name of the glass catalog
cls_name – the class name of the glass catalog

Raises:

GlassCatalogNotFoundError – if catalog isn’t found

xl_cols(): Generate Excel column labels, A thru ZZ.

xl2df(fname): Read Excel fname into a dataframe and apply Excel based column names.

build_glass_cat(xl_df, series_mappings, item_mappings, *args, **kwargs): Apply series and item mappings to xl_df, and return catalog df.

class GlassCatalogPandas(name, fname, series_mappings, item_mappings, *args, **kwargs)

Bases: object

Pandas-based glass catalog

Optical glass manufacturers have settled on Excel spreadsheets as a means of documenting the technical details of their glass products. The formats are broadly similar but different in the details. This class and related functions provide a means of mapping the Excel data into a pandas dataframe that has some categories relabeled to take advantage of commonalities.

The class is adapted to a specific catalog by defining the position and size of the data areas in the original Excel spreadsheet. Pandas is used to read the spreadsheet into a dataframe, xl_df. xl_df has indices and columns that match the Excel worksheet border.

the index runs from 1 to xl_df.shape[0]
the columns match the pattern ‘A’, ‘B’, ‘C’, … ‘Z’, ‘AA’, ‘AB’, …

This facilitates transferring areas on the spreadsheet to areas in the catalog DataFrame.

Manufacturers spreadsheets have a header area and a data area. First, a set of parameters are defined for the header. Data that are spread over multiple columns form a category, often readily identified in the spreadsheet layout.

num_rows = 2  # number of header rows in the imported spreadsheet
category_row = 1  # row with categories
header_row = 2  # row with data item/header info
data_col = 'B'  # first column of data in the imported spreadsheet
args = num_rows, category_row , header_row, data_col

The location of the different categories in the spreadsheet is defined in the series_mapping list.

series_mappings = [
    ('refractive indices', (lambda h: h.split('n')[-1]),
     category_row, 'C', 'P'),
    ('dispersion coefficients', None, category_row, 'V', 'AA'),
    ('internal transmission mm, 10', None, header_row, 'DC', 'EK'),
    ('chemical properties', None, category_row, 'AW', 'BA'),
    ('thermal properties', None, category_row, 'BB', 'BI'),
    ('mechanical properties', None, category_row, 'BJ', 'BO'),
    ]

There are common items of interest, that correspond to a single column. These are defined in the item_mappings list.

item_mappings = [
    ('refractive indices', 'C', header_row, 'F'),
    ('refractive indices', "C'", header_row, 'G'),
    ('abbe number', 'vd', header_row, 'R'),
    ('abbe number', 've', header_row, 'S'),
    ('specific gravity', 'd', header_row, 'BP'),
    ]
kwargs = dict(
    data_extent = (3, 242, data_col, 'FZ'),
    name_col_offset = 'A',
    )

name: the glass catalog name

df: the DataFrame containing the catalog data

glass_list

glass_lookup

abstract create_glass(gname: str, gcat: str) → OpticalMedium

Create an instance of the glass gname.

Must be implemented by the subclasses.

catalog_name()

get_glass_names(): returns a list of glass names

get_column_names(): returns a list of column headers

glass_index(gname)

returns the glass index (row) for glass name gname

Parameters:: gname (str) – glass name
Returns:: the 0-based index (row) of the requested glass
Return type:: int

data_index(dname)

returns the data index (column) for data dname

Parameters:: dname (str) – header string for data
Returns:: the 1-based index (column) of the requested data
Return type:: int
Raises:: GlassDataNotFoundError – if dname doesn’t match any header string

get_data_for_glass(gname, dindex=None, num=None)

returns an array of glass data for the glass at gname

Parameters:

gname – glass index into spreadsheet
dindex – the starting column of the desired data
num – number of data items (cells) to retrieve

Returns: list of data items

glass_data(gindex): returns an array of data for the glass at gindex

glass_coefs(gname): returns an array of glass coefficients for the glass at gname

catalog_data(dindex): returns an array of data at column dindex for all glasses

transmission_data(gname)

returns an array of transmission data for the glass at gindex

Parameters:: gname – glass name
Returns:: list of wavelength, transmittance pairs

glass_map_data(wvl='d', **kwargs)

return index and dispersion data for all glasses in the catalog

Parameters:: wvl (str) – the central wavelength for the data, either ‘d’ or ‘e’
Returns:: index, V-number, partial dispersion, Buchdahl coefficients, and glass names

class GlassPandas(gname)

Bases: OpticalMedium

base optical glass, for use with pandas

gname: the glass name

catalog: the GlassCatalog this glass is associated with. Must be provided by the derived class

coefs: list of coefficients for calculating refractive index vs wv

sync_to_restore(): hook routine to restore coefs, if needed

initialize_catalog(): subclass initialization of glass catalog instance, as needed.

glass_code(d_str='d', vd_str='vd'): returns the 6 digit glass code, combining index and V-number

glass_data(): returns the raw spreadsheet data for the glass as a Series

name(): returns the glass name, gname

catalog_name(): returns the glass name, gname

meas_rindex(wvl)

returns the measured refractive index at wvl

Parameters:: wvl – a string with a spectral line identifier
Returns:: the refractive index at wvl
Return type:: float
Raises:: KeyError – if wvl is not in the spectra dictionary

rindex(wvl) → float

returns the interpolated refractive index at wvl

Parameters:: wvl – either the wavelength in nm or a string with a spectral line identifier. for the refractive index query
Returns:: the refractive index at wv_nm
Return type:: float
Raises:: KeyError – if wvl is not in the spectra dictionary

calc_rindex(wv_nm: float | ndarray[Any, dtype[_ScalarType_co]]) → float | ndarray[Any, dtype[_ScalarType_co]]

returns the interpolated refractive index at wv_nm

Must be provided by the derived class

Parameters:: wv_nm (float or numpy array) – wavelength in nm for the refractive index query
Returns:: the refractive index at wv_nm
Return type:: float or numpy array

transmission_data()

returns an array of transmission data for the glass

Returns: np.arrays of wavelength and transmission for 10mm sample

decode_glass_name(glass_name)

Split glass_name into prefix, group, num, suffix.

Manufacturers glass names follow a common pattern. At the simplest, it is a short character string, typically used to identify a particular glass composition, with a numeric qualifier. The composition group and product serial number are combined to form the basic product id, the group_num:

F2

SF56

Manufacturers will often use a single character prefix to indicate different categories of glasses, e.g. moldable or “New”:

N-BK7

P-LASF50

Similarly, a suffix with one or more characters is often used to differentiate between different variations of the same base material.

N-SF57

N-SF57HT

N-SF57HTultra

This function takes an input glass name and returns a tuple of strings. A valid glass_name should always have a non-null group_num; prefixes and suffixes are optional and used differently by different manufacturers.

group_num, prefix, suffix

group, num = group_num

Parameters:: glass_name (str) – a glass manufacturer’s glass name

Returns: group_num, prefix, suffix, where group_num = group, num

Returned strings are uppercase.

glass_catalog_stats(glass_list, do_print=False)

Decode all of the glass names in glass_cat_name.

Print out the original glass names and the decoded version side by side.

Parameters:

glass_list – ((group, num), prefix, suffix), glass_name, glass_cat_name
do_print (bool) – if True, print the glass name and the decoded version

Returns:

all catalog groups group_num (dict): all glasses with multiple variants prefixes (dict): all the non-null prefixes used suffixes (dict): all the non-null suffixes used

Return type:

groups (dict)

class Robb1983Catalog(*args, **kwargs)

Bases: object

glass catalog based on data in Robb, et als 1983 paper on Buchdahl’s chromatic coordinate

The data used by this class is from the 1983 paper by Paul N. Robb and R. I. Mercado, Calculation of refractive indices using Buchdahl’s chromatic coordinate . The copyright date for all 5 catalogs cited was 1980.

Parameters:: fname – filename, located in data directory

glass_db: dict lookup by catalog and glass name, value is decoded glassname and Buchdahl coefficients

glass_list: list of decoded_glassname, glassname, and catalog per glass

property glass_data

create_glass(gname: str, gcat: str) → OpticalMedium

catalog_name()

get_glass_names(gcat=None): returns a list of glass names

glass_map_data(wvl='d', **kwargs)

return index and dispersion data for all glasses in the catalog

Parameters:: wvl (str) – the central wavelength for the data, either ‘d’ or ‘e’
Returns:: index, V-number, partial dispersion, Buchdahl coefficients, and glass names

get_glass_map_arrays(d_str, F_str, C_str, **kwargs)

return index and dispersion data arrays for input spectral range

Parameters:

nd_str (str) – central wavelength string
nf_str (str) – blue end wavelength string
nc_str (str) – red end wavelength string

Returns:

index, V-number, partial dispersion, Buchdahl coefficients, and glass names

glassfactory

Interfaces for commercial glass catalogs

The glassfactory module is intended to be the primary method by which glass instances are created. The create_glass() is the public factory function for this purpose. The public function get_glass_catalog() returns the glass catalog instance corresponding to the input string.

create_glass(*name_catalog)

Factory function returning a catalog glass instance.

The input argument list can take several forms:

1 string argument in the form ‘glass_name,catalog_name’

2 arguments. The first is a string glass name. The second is a string or list of strings of catalog names.

If 2 arguments are used and the catalog is “rindexinfo”, the “name” field is taken as a URL or filepath to a material in the RefractiveIndex.INFO database.

Parameters:

*name_catalog – tuple of 1 or 2 input items

Raises:

GlassCatalogNotFoundError – if catalog isn’t found
GlassNotFoundError – if name isn’t in the specified catalog

get_glass_catalog(cat_name, mod_name=None, cls_name=None)

Function returning a glass catalog instance.

Parameters:: catalog – name of supported catalog (CDGM, Hoya, Ohara, Schott)
Raises:: GlassCatalogNotFoundError – if catalog isn’t found

fill_catalog_list(cat_list=None): Given a list of catalog names, populate the _catalog_list with them.

modelglass

Module for optical glass models based on index/v-number

model_from_glasses(gla1, gla2): Create a model from the slope between two glasses.

class ModelGlass(nd: float, vd: float, mat: str, cat: str = 'user')

Bases: OpticalMedium

Optical medium defined by a glass code, i.e. index - V number pair

sync_to_restore()

glass_code()

name()

catalog_name()

calc_rindex(wv_nm)

returns the interpolated refractive index at wv_nm

Parameters:: wv_nm (float or numpy array) – wavelength in nm for the refractive index query
Returns:: the refractive index at wv_nm
Return type:: float or numpy array

meas_rindex(wvl)

returns the measured refractive index at wvl

Parameters:: wvl – a string with a spectral line identifier
Returns:: the refractive index at wvl
Return type:: float
Raises:: KeyError – if wvl is not in the spectra dictionary

update(nd, vd)

buchdahl

Buchdahl chromatic coordinate modeling and support

get_wv(wavelength): Return the wavelength in micrometers.

omega(delta_lambda): Calculate the Buchdahl chromatic coordinate.

omega2wvl(om)

calc_buchdahl_coords(nd, nF, nC, wlns=('d', 'F', 'C'), ctype=None, **kwargs)

Given central, blue and red refractive indices, calculate the Buchdahl chromatic coefficients.

Parameters:

nd – central refractive index
nF – “blue” refractive index
nC – “red” refractive index
wlns – wavelengths for the 3 refractive indices
ctype – if “disp_coefs”, return dispersion coefficients, otherwise the quadratic coefficients

fit_buchdahl_coords(indices, degree=2, wlns=['d', 'h', 'g', 'F', 'e', 'C', 'r']): Given central, 4 blue and 2 red refractive indices, do a least squares fit for the Buchdahl chromatic coefficients.

class Buchdahl(wv0, rind0, coefs, mat='', cat='')

Bases: OpticalMedium

Quadratic Buchdahl refractive index model.

\[N(\omega) = {N_0} + \nu_1\omega + \nu_2\omega^2\]

\(\omega\) is the Buchdahl chromatic coordinate for the input wavelength
\(\nu_1, \nu_2\) are the linear and quadratic coefficients of the model
\({N_0}\) is the refractive index at the central wavelength of the fit

The Buchdahl chromatic coordinate \(\omega\) is defined as:

\[\omega(\lambda) = \frac{\lambda - \lambda_0}{1 + 5/2(\lambda - \lambda_0)}\]

name()

catalog_name()

glass_code()

rindex(wvl): Returns the refractive index from the quadratic model at wvl.

meas_rindex(wvl: str) → float

returns the measured refractive index at wvl

Parameters:: wvl – a string with a spectral line identifier
Returns:: the refractive index at wvl
Return type:: float
Raises:: KeyError – if wvl is not in the spectra dictionary

calc_rindex(wv_nm)

returns the interpolated refractive index at wv_nm

Parameters:: wv_nm (float or numpy array) – wavelength in nm for the refractive index query
Returns:: the refractive index at wv_nm
Return type:: float or numpy array

transmission_data(thi: float)

returns an array of transmission data for the glass

Returns: np.arrays of wavelength and transmission for thi mm sample

class Buchdahl1(medium, wlns=('d', 'F', 'C'), **kwargs)

Bases: Buchdahl

Quadratic refractive index model for a real glass, medium.

update(rindx)

class Buchdahl2(nd, vd, model=None, wlns=('d', 'F', 'C'), **kwargs)

Bases: Buchdahl

Quadratic refractive index model for a 6-digit glass specification.

b = -0.064667

m = -1.604048

update(nd, vd)

update_model(nd, vd)

spectral_lines

Support for using wavelength values and spectral line designations interchangably.

spectra = {"A'": 768.195, 'C': 656.2725, "C'": 643.8469, 'D': 589.2938, 'F': 486.1327, "F'": 479.9914, 'He-Cd': 441.57, 'He-Ne': 632.8, 'Nd': 1060.0, 'd': 587.5618, 'e': 546.074, 'g': 435.8343, 'h': 404.6561, 'i': 365.014, 'r': 706.5188, 's': 852.11, 't': 1013.98}

dict:

keys: spectral line labels
values: wavelengths in nm

get_wavelength(wvl) → float | ndarray[Any, dtype[_ScalarType_co]]

Return wvl in nm, where wvl can be a spectral line

Example:

In [1]: from rayoptics.util.spectral_lines import *

In [2]: wl_e = get_wavelength('e'); wl_e
Out[2]: 546.074

In [3]: wl_HeNe = get_wavelength('He-Ne'); wl_HeNe
Out[3]: 632.8

In [4]: wl_550 = get_wavelength(550); wl_550
Out[4]: 550.0

In [5]: wl_fl = get_wavelength(555.0); wl_fl
Out[5]: 555.0

In [6]: wl_f = get_wavelength('F'); wl_f
Out[6]: 486.1327

Parameters:: wvl – either the wavelength in nm, a string with a spectral line identifier or a pandas Index. Case sensitive - Fraunhofer lines have a proper capitalization. The keys need to match exactly.
Returns:: the wavelength in nm, or a numpy array of floats
Return type:: float
Raises:: KeyError – if wvl is not in the spectra dictionary

util

Utilities including Singleton metaclass

class Counter

Bases: dict

A dict that initializes a missing key’s value to 0.

Example

track_changes = Counter() track_changes[‘something happened’] += 1 track_changes[‘something not found’] += 1

class Singleton

Bases: type

A metaclass implementation for the Singleton pattern.

Example

class JustOne(metaclass=Singleton):: pass

rgb2mpl(rgb): convert 8 bit RGB data to 0 to 1 range for mpl

calc_glass_constants(nd, nF, nC, *partials)

Given central, blue and red refractive indices, calculate Vd and PFd.

Parameters:

nd – refractive indices at central, short and long wavelengths
nF – refractive indices at central, short and long wavelengths
nC – refractive indices at central, short and long wavelengths
partials (tuple) – if present, 2 ref indxs, n4 and n5, wl4 < wl5

Returns:

V-number and relative partial dispersion from F to d

If partials is present, the return values include the central wavelength index and the relative partial dispersion between the 2 refractive indices provided from partials.

glasserror

Support for Glass catalog exception handling

exception GlassError

Bases: Exception

Exception raised when interrogating glass database

exception GlassCatalogNotFoundError(catalog)

Bases: GlassError

Exception raised when glass catalog name not found

exception GlassNotFoundError(catalog, name)

Bases: GlassError

Exception raised when glass name not found

exception GlassDataNotFoundError(catalog, data)

Bases: GlassError

Exception raised when glass data item not found

exception GlassDBNotSupported(db)

Bases: GlassError

Exception: data-n2 rindexinfo database is requested.

GUI Submodules

glassmap

Glass map display, via Matplotlib

class GlassMapDB(*args)

Bases: object

Simple model to support Model/View architecture for Glass map views

catalogs: list of objects that respond to glass_map_data()

get_data_at(i, **kwargs)

get_data_set_label_at(i)

class GlassMapSet(glasses, cat_name)

Bases: object

Set of glass instances to be displayed in a GlassMapFigure.

catalog_name()

glass_map_data(wvl='d', **kwargs)

calc_glass_map_arrays(glasses, d_str, F_str, C_str, **kwargs)

return index and dispersion data arrays for input spectral range

Parameters:

glasses (list) – input list of glass instances
nd_str (str) – central wavelength string
nf_str (str) – blue end wavelength string
nc_str (str) – red end wavelength string
partials (tuple) – kwarg if present, 2 wvls, wl4 and wl5, wl4 < wl5

Returns:

index, V-number, partial dispersion, Buchdahl coefficients, and glass names

class GlassMapFigure(glass_db, db_display=None, hover_glass_names=True, plot_display_type='Refractive Index', refresh_gui=None, **kwargs)

Bases: Figure

Matplotlib implementation of an optical glass map.

glass_db: an instance of GlassMapDB

db_display: list of boolean flags to control catalog display

hover_glass_names: if True display glass name list under cursor

plot_display_type

controls the type of data display. Supported types are:

“Refractive Index”
“Partial Dispersion”
“Buchdahl Coefficients”
“Buchdahl Dispersion Coefficients”

refresh_gui: an optional function called when a glass is picked

pick_list

list of glasses selected by a mouse click. The on_pick fct accumulates the pick_list. Filled with:

catalog_name, glass_name, nd, vd, PCd

dsc = [(0.2196078431372549, 0.5568627450980392, 0.5568627450980392), (0.5215686274509804, 0.5215686274509804, 0.5215686274509804), (0.44313725490196076, 0.44313725490196076, 0.7764705882352941), (0.4, 0.803921568627451, 0), (1.0, 0.4470588235294118, 0.33725490196078434), (1.0, 0.6470588235294118, 0.0), (0.5450980392156862, 0.5450980392156862, 0.5137254901960784)]

mkr = ['^', 'x', '2', 's', 'v', '+', '*', 'D', 'o']

home_bbox = Bbox([[95.0, 1.45], [20.0, 2.05]])

connect_events(action_dict=None): connect to all the events we need

disconnect_events(): disconnect all the stored connection ids

get_display_label(): Return the type of plot being displayed.

refresh(**kwargs)

Call update_data() followed by plot(), return self.

Parameters:: kwargs – keyword arguments are passed to update_data
Returns:: self (class Figure) so scripting envs will auto display results

update_data(**kwargs)

Fill in raw_data array.

The raw_data attribute is a list over catalogs. Each catalog has an item consisting of the catalog name and a tuple of vectors:

n, v, p, coefs0, coefs1, glass_names

update_axis_limits(bbox): Update the axis limits basde on the data bounding box.

draw_axes(): Draw and label the axes.

plot(): Draw the glass map.

draw_glass_polygons(): Draw the glass polygons on the map.

clear_pick_table(): Reset the pick list.

find_artists_at_location(event): Returns a list of shapes in zorder at the event location.

on_hover(event): Display the glasses under the cursor.

on_pick(event)

handle picking glasses under the cursor.

One pick event for each catalog, extract selected glasses and add to pick_list

on_press(event)

handle mouse clicks within the diagram.

The button press event is sent after the pick events; it will be sent in cases with no pick events, e.g. clicking in an empty area of the axes. The two cases are:

if there were pick events, needsClear will be False so that items from different artists can be accumulated in the pick_list. The press event signals no further item accumulation. Flip needsClear to True so the next pick or press event will clear the pick_list.

if there were no pick events, needsClear will be True. Call clear_pick_table to empty pick_list and reset needsClear to False.

updateVisibility(indx, state): Update the visibility and redraw.

set(*, agg_filter=<UNSET>, alpha=<UNSET>, animated=<UNSET>, canvas=<UNSET>, clip_box=<UNSET>, clip_on=<UNSET>, clip_path=<UNSET>, constrained_layout=<UNSET>, constrained_layout_pads=<UNSET>, dpi=<UNSET>, edgecolor=<UNSET>, facecolor=<UNSET>, figheight=<UNSET>, figwidth=<UNSET>, frameon=<UNSET>, gid=<UNSET>, in_layout=<UNSET>, label=<UNSET>, layout_engine=<UNSET>, linewidth=<UNSET>, mouseover=<UNSET>, path_effects=<UNSET>, picker=<UNSET>, rasterized=<UNSET>, size_inches=<UNSET>, sketch_params=<UNSET>, snap=<UNSET>, tight_layout=<UNSET>, transform=<UNSET>, url=<UNSET>, visible=<UNSET>, zorder=<UNSET>)

Set multiple properties at once.

Supported properties are

Properties:: agg_filter: a filter function, which takes a (m, n, 3) float array and a dpi value, and returns a (m, n, 3) array and two offsets from the bottom left corner of the image alpha: scalar or None animated: bool canvas: FigureCanvas clip_box: ~matplotlib.transforms.BboxBase or None clip_on: bool clip_path: Patch or (Path, Transform) or None constrained_layout: unknown constrained_layout_pads: unknown dpi: float edgecolor: color facecolor: color figheight: float figure: ~matplotlib.figure.Figure figwidth: float frameon: bool gid: str in_layout: bool label: object layout_engine: {‘constrained’, ‘compressed’, ‘tight’, ‘none’, .LayoutEngine, None} linewidth: number mouseover: bool path_effects: list of .AbstractPathEffect picker: None or bool or float or callable rasterized: bool size_inches: (float, float) or float sketch_params: (scale: float, length: float, randomness: float) snap: bool or None tight_layout: unknown transform: ~matplotlib.transforms.Transform url: str visible: bool zorder: float

glassmapviewer

desktop application for viewing glass catalog data

init_UI(gui_parent, fig)

createPlotTypeBox(gui_parent, fig)

createPartialsBox(gui_parent, fig)

on_plot_type_toggled(fig, button)

createCatalogGroupBox(gui_parent, fig)

create_handle_checkbox(fig, cb_number)

class GlassMapViewer

Bases: QMainWindow

refresh_gui(**kwargs)

staticMetaObject = PySide6.QtCore.QMetaObject("GlassMapViewer" inherits "QMainWindow": )

class PickTable(gui_parent, pick_model)

Bases: QTableView

mousePressEvent(event): Initiate glass drag and drop operation from here.

staticMetaObject = PySide6.QtCore.QMetaObject("PickTable" inherits "QTableView": )

class PickModel(fig)

Bases: QAbstractTableModel

rowCount(self, parent: PySide6.QtCore.QModelIndex | PySide6.QtCore.QPersistentModelIndex = Invalid(PySide6.QtCore.QModelIndex)) → int

columnCount(self, parent: PySide6.QtCore.QModelIndex | PySide6.QtCore.QPersistentModelIndex = Invalid(PySide6.QtCore.QModelIndex)) → int

headerData(self, section: int, orientation: PySide6.QtCore.Qt.Orientation, role: int = Instance(Qt.DisplayRole)) → Any

data(self, index: PySide6.QtCore.QModelIndex | PySide6.QtCore.QPersistentModelIndex, role: int = Instance(Qt.DisplayRole)) → Any

fill_table(pick_list)

staticMetaObject = PySide6.QtCore.QMetaObject("PickModel" inherits "QAbstractTableModel": )

class PlotCanvas(gui_parent, fig)

Bases: FigureCanvasQTAgg

staticMetaObject = PySide6.QtCore.QMetaObject("PlotCanvas" inherits "FigureCanvasQTAgg": )

main()

glasspolygons

create glass map glass designation polygons

find_glass_designation(nd, vd)

find the designation and rgb color for the input index and V number

Parameters:

nd – refractive index, d line
vd – V-number, d line

Returns:

designation label, RGBA list

Catalog-specific Submodules

cdgm

Support for the CDGM Glass catalog

class CDGMCatalog(*args, **kwargs)

Bases: GlassCatalogPandas

create_glass(gname: str, gcat: str) → CDGMGlass: Create an instance of the glass gname.

class CDGMGlass(gname)

Bases: GlassPandas

catalog = None

initialize_catalog(): subclass initialization of glass catalog instance, as needed.

calc_rindex(wv_nm)

returns the interpolated refractive index at wv_nm

Must be provided by the derived class

Parameters:: wv_nm (float or numpy array) – wavelength in nm for the refractive index query
Returns:: the refractive index at wv_nm
Return type:: float or numpy array

hikari

Support for the Hikari Glass catalog

class HikariCatalog(*args, **kwargs)

Bases: GlassCatalogPandas

get_rindx_wvl(): Returns the wavelength value from the refractive index data header string.

get_transmission_wvl(): Returns the wavelength header string.

create_glass(gname: str, gcat: str) → HikariGlass: Create an instance of the glass gname.

class HikariGlass(gname)

Bases: GlassPandas

catalog = None

initialize_catalog(): subclass initialization of glass catalog instance, as needed.

calc_rindex(wv_nm)

returns the interpolated refractive index at wv_nm

Must be provided by the derived class

Parameters:: wv_nm (float or numpy array) – wavelength in nm for the refractive index query
Returns:: the refractive index at wv_nm
Return type:: float or numpy array

hoya

Support for the Hoya Glass catalog

class HoyaCatalog(*args, **kwargs)

Bases: GlassCatalogPandas

glass_coefs(gname): returns an array of glass coefficients for the glass at gname

create_glass(gname: str, gcat: str) → HoyaGlass: Create an instance of the glass gname.

class HoyaGlass(gname)

Bases: GlassPandas

catalog = None

initialize_catalog(): subclass initialization of glass catalog instance, as needed.

calc_rindex(wv_nm)

returns the interpolated refractive index at wv_nm

Must be provided by the derived class

Parameters:: wv_nm (float or numpy array) – wavelength in nm for the refractive index query
Returns:: the refractive index at wv_nm
Return type:: float or numpy array

ohara

Support for the Ohara Glass catalog

class OharaCatalog(*args, **kwargs)

Bases: GlassCatalogPandas

get_rindx_wvl(): Returns the wavelength value from the refractive index data header string.

create_glass(gname: str, gcat: str) → OharaGlass: Create an instance of the glass gname.

class OharaGlass(gname)

Bases: GlassPandas

catalog = None

initialize_catalog(): subclass initialization of glass catalog instance, as needed.

calc_rindex(wv_nm)

returns the interpolated refractive index at wv_nm

Must be provided by the derived class

Parameters:: wv_nm (float or numpy array) – wavelength in nm for the refractive index query
Returns:: the refractive index at wv_nm
Return type:: float or numpy array

schott

Support for the Schott Glass catalog

class SchottCatalog(*args, **kwargs)

Bases: GlassCatalogPandas

get_rindx_wvl(): Returns the wavelength value from the refractive index data header string.

get_transmission_wvl(): Returns the wavelength value from the transmission data header string.

create_glass(gname: str, gcat: str) → SchottGlass: Create an instance of the glass gname.

class SchottGlass(gname)

Bases: GlassPandas

catalog = None

initialize_catalog(): subclass initialization of glass catalog instance, as needed.

calc_rindex(wv_nm)

returns the interpolated refractive index at wv_nm

Must be provided by the derived class

Parameters:: wv_nm (float or numpy array) – wavelength in nm for the refractive index query
Returns:: the refractive index at wv_nm
Return type:: float or numpy array

sumita

Support for the Sumita Glass catalog

class SumitaCatalog(*args, **kwargs)

Bases: GlassCatalogPandas

get_rindx_wvl(): Returns the wavelength value from the refractive index data header string.

get_transmission_wvl(): Returns the wavelength value from the transmission data header string.

create_glass(gname: str, gcat: str) → SumitaGlass: Create an instance of the glass gname.

class SumitaGlass(gname)

Bases: GlassPandas

catalog = None

initialize_catalog(): subclass initialization of glass catalog instance, as needed.

calc_rindex(wv_nm)

returns the interpolated refractive index at wv_nm

Must be provided by the derived class

Parameters:: wv_nm (float or numpy array) – wavelength in nm for the refractive index query
Returns:: the refractive index at wv_nm
Return type:: float or numpy array

rindexinfo

Interface to the RefractiveIndex.INFO database

create_glass(file_url: str | Path) → OpticalMedium

Create a glass from the RefractiveIndex.Info (RII) database.

Parameters:: file_url – Union[str, Path]: a file path or a URL to the RII item

The URL must be rooted in the domain https://refractiveindex.info.

get_glassname_from_filestr(filestr: str): try to construct a name and catalog from the filename/url

read_rii_file(filename: str | Path): given a filename of a RII file, return a yaml instance.

read_rii_url(url: str): given a url to a RII file, return a yaml instance.

create_material(yaml_data: Any, label: str, catalog: str, db: str) → OpticalMedium: Create a material object given yaml data and identifiers.

read_coefficients(material_data, material_type)

read_data_arrays(material_data, material_type)

validate_wvls(wv_um, data_range)

eval_formula_1(wv_nm, coeff, data_range=None): Sellmeier (preferred)

eval_formula_2(wv_nm, coeff, data_range=None): Sellmeier 2

eval_formula_3(wv_nm, coeff, data_range=None): Polynomial

eval_formula_4(wv_nm, coeff, data_range=None): RefractiveIndex.INFO

eval_formula_5(wv_nm, coeff, data_range=None): Cauchy

eval_formula_6(wv_nm, coeff, data_range=None): Gases

eval_formula_7(wv_nm, coeff, data_range=None): Hertzberger

eval_formula_8(wv_nm, coeff, data_range=None): Retro

eval_formula_9(wv_nm, coeff, data_range=None): Exotic

class RIIMedium(label, coefs, rndx_fct, data_range=None, kvals_wvls=None, kvals=None, mat='', cat='')

Bases: OpticalMedium

name() → str

catalog_name() → str

glass_code() → str

update() → None

rindex(wvl: float | str) → float: Returns the refractive index from the quadratic model at wvl.

calc_rindex(wv_nm: float | ndarray[Any, dtype[_ScalarType_co]]) → float | ndarray[Any, dtype[_ScalarType_co]]

returns the interpolated refractive index at wv_nm

Parameters:: wv_nm (float or numpy array) – wavelength in nm for the refractive index query
Returns:: the refractive index at wv_nm
Return type:: float or numpy array

meas_rindex(wvl: str) → float

returns the measured refractive index at wvl

For InterpolatedMedium the measured index isn’t directly known. The calculated index is used instead. Calling rindex handles the spectral line conversion.

transmission_data(thi=10.0)

returns an array of transmission data for the glass

Returns: np.arrays of wavelength and transmission for thi mm sample

summary_plots(opt_medium, opt_medium_yaml=None): plot refractive index and thruput data, when available.