optics
Class RefractiveIndex

java.lang.Object
  optics.Optics
      optics.WaveLengthFunction
          optics.RefractiveIndex

Direct Known Subclasses:

AirIndex, CauchyIndex, FixedIndex, HoyaIndex, OharaIndex, SchottIndex, SellmeirIndex

public abstract class RefractiveIndex
extends WaveLengthFunction

Abstract class for refractive index being a scalar. This also contains static classes to specify a Refractive Index by a String/Tokens.

Field Summary

static RefractiveIndex	air Static RefractiveIndex to represent air, being an AirIndex with a default index of Constants.AIR.
protected double	currentIndex Current numerical value of the index, used to prevent multiple calcualations of complex index calcualtions.
protected double	currentWaveLength The current value of the wavelength, used to prevent multiple calcualations of complex index calcualtions.

Fields inherited from class optics.WaveLengthFunction

maxPlotLambda, minPlotLambda, plotPoints

Fields inherited from class optics.Optics

DEFAULT_WAVELENGTH, errorStream, fmt, MICRONS, version

Constructor Summary

RefractiveIndex()

Method Summary

static RefractiveIndex	fromString(String s) Static method to get a Refractive Index from a specifying String.
static RefractiveIndex	fromTokens(StringTokenizer tokens) Static method to get a Refractive Index set of Tokens.
double	getIndex() Method to return the refarctive index at the current DEFAULT_WAVELENGTH.
abstract double	getIndex(double lambda) Method to return the value of the refractive index.
double	getIndex(Ray r) Method to return value of the refrective index with wavelength specifed by a Ray, or one it extending classes.
double	getnd() Method to get the index at the Helium-d line.
double	getne() Metho to ge tthe index at the Mercury e-line
double	getValue(double lambda) Overload of method for WavelengthFunction
double	getVd() Method to get the index at the Abbe, or Vd number.
double	getVe() Method to get the index at the Mercury e-line Abbe, or Ve number.
static void	main(String[] args) Test method to read a Refractive Index from a String and plot as a degault graph.

Methods inherited from class optics.WaveLengthFunction

getPlot, getPlotPoints, setPlot, setPlotPoints, setPlotRange, setPlotRange, toGraph, toPlot, toPlot, toPlot

Methods inherited from class optics.Optics

getDefaultWaveLength, getErrorStream, getFormatString, getName, getStaticName, getVersion, printError, setDefaultWaveLength, setErrorStream, setFormatString, setMicrons

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

air

public static RefractiveIndex air

Static RefractiveIndex to represent air, being an AirIndex with a default index of Constants.AIR.

See Also:

AirIndex

currentIndex

protected double currentIndex

Current numerical value of the index, used to prevent multiple calcualations of complex index calcualtions.

currentWaveLength

protected double currentWaveLength

The current value of the wavelength, used to prevent multiple calcualations of complex index calcualtions.

Constructor Detail

RefractiveIndex

public RefractiveIndex()

Method Detail

getIndex

public abstract double getIndex(double lambda)

Method to return the value of the refractive index.

Parameters:

lambda - the wavelength.

Returns:

double the refractive index value.

getIndex

public double getIndex()

Method to return the refarctive index at the current DEFAULT_WAVELENGTH.

Returns:

double the refractive index value.

getIndex

public double getIndex(Ray r)

Method to return value of the refrective index with wavelength specifed by a Ray, or one it extending classes.

Parameters:

r - the ray.

getValue

public double getValue(double lambda)

Overload of method for WavelengthFunction

Specified by:

getValue in class WaveLengthFunction

Parameters:

lambda - the wavelength.

Returns:

double the refractive index value.

getnd

public double getnd()

Method to get the index at the Helium-d line.

Returns:

double index at He-d line

getne

public double getne()

Metho to ge tthe index at the Mercury e-line

Returns:

double index at Hg e line

getVd

public double getVd()

Method to get the index at the Abbe, or Vd number. it will be zero if the matial is no dispersive.

Returns:

double the Vd number

getVe

public double getVe()

Method to get the index at the Mercury e-line Abbe, or Ve number. it will be zero if the matial is no dispersive.

Returns:

double the Vd number

fromString

public static RefractiveIndex fromString(String s)

Static method to get a Refractive Index from a specifying String.

Parameters:

s - specifying String

Returns:

RefractiveIndex fails to Air

fromTokens

public static RefractiveIndex fromTokens(StringTokenizer tokens)

Static method to get a Refractive Index set of Tokens. The number of tokens expected (and read) depends on the index type requested.

Parameters:

tokens - set of tokens

Returns:

RefractiveIndex fails to Air

main

public static void main(String[] args)

Test method to read a Refractive Index from a String and plot as a degault graph.