OHARA GmbH

Ohara Glass Catalog / Technical Information

2. Optical Properties

2.1 Refractive Index

The refractive indices listed in this catalogue were determined to the fifth decimal place for the following 20 lines of the spectrum. The refractive indices for d-line (587.56 nm) and e-line (546.07 nm) were determined to the sixth decimal place.

Spectral Line Symbol					t	s	A'	r	C	C'
Light Source	Hg	Hg	Hg	Hg	Hg	Cs	K	He	H	Cd
Wavelength (nm)	2325.42	1970.09	1529.58	1128.64	1013.98	852.11	768.19	706.52	656.27	643.85
Spectral Line Symbol	He-Ne	D	d	e	F	F'	He-Cd	g	h	i
Light Source	Laser	Na	He	Hg	H	Cd	Laser	Hg	Hg	Hg
Wavelength (nm)	632.8	589.29	587.56	546.07	486.13	479.99	441.57	435.835	404.656	365.015

Table 1

The catalogue technical data sheets give the wavelength of each line in µm units next to the corresponding spectrum line symbol.

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