BSM18(OHARA) Refractive Index

Optical constants (n, k) of BSM18(OHARA), covering 0.33 – 2.19 μm wavelength range.

Range 0.334 – 2.186 μm
Data Points 94

Optical Constants at Key Wavelengths

632.8 nm (He-Ne)
n = 1.6361
k = 0.0000
589.3 nm (Na-D)
n = 1.6382
k = 0.0000
532 nm
n = 1.6423
k = 0.0000
1550 nm (Telecom)
n = 1.6183
k = 0.0000

n, k Dispersion Curves

Data Table (Sampled)

Wavelength (μm)nk
0.33401.677670.00000
0.37381.665070.00000
0.41361.656560.00000
0.45351.650440.00000
0.49331.645840.00000
0.53311.642280.00000
0.57291.639440.00000
0.61271.637130.00000
0.65261.635220.00000
0.69241.633600.00000
0.73221.632210.00000
0.77201.630990.00000
0.81181.629920.00000
0.85171.628960.00000
0.89151.628090.00000
0.93131.627290.00000
0.97111.626550.00000
1.01091.625860.00000
1.05081.625210.00000
1.09061.624580.00000
1.13041.623980.00000
1.17021.623400.00000
1.21001.622840.00000
1.24991.622290.00000
1.28971.621750.00000
1.32951.621210.00000
1.36931.620690.00000
1.40911.620160.00000
1.44901.619640.00000
1.48881.619110.00000
1.52861.618590.00000
1.56841.618060.00000
1.60821.617530.00000
1.64811.617000.00000
1.68791.616460.00000
1.72771.615920.00000
1.76751.615370.00000
1.80731.614820.00000
1.84721.614260.00000
1.88701.613690.00000
1.92681.613110.00000
1.96661.612530.00000
2.00641.611940.00000
2.04631.611350.00000
2.08611.610740.00000
2.12591.610130.00000
2.16571.609500.00000
2.18561.609190.00000

Sampled data (94 points total). Click "Download Full CSV" for complete data.

References

OHARA Zemax catalog 2017-11-30 (obtained from http://www.ohara-inc.co.jp)
See also OHARA glass data sheets

Related Materials (Specs)

4786 (NIKON i-line glass) 5165 (NIKON i-line glass) 5742 (NIKON i-line glass) 5859 (NIKON i-line glass) 7054 (NIKON i-line glass) acrylic double matching liquid

Need to measure BSM18(OHARA) thin film thickness?

Acuitik film thickness measurement systems offer sub-nanometer non-contact precision.

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