Optical Glass

K-GIR79 -Infrared transmission glass-

  • High transmission from visible light to middle IR
  • There is no birefringence as it is isotropic material.
  • Weather ability, workability is superior

Refractive index

nF(486.1nm) 1.87424 nC(656.3nm) 1.84832 分散νd 33.0
nd(587.6nm) 1.85588 n(3.5587µm) 1.79231
λ(nm) 屈折率 λ(nm) 屈折率
365 1.92660 1813 1.81760
405 1.90266 1970 1.81566
436 1.88944 2002 1.81516
478 1.87579 2057 1.81459
486 1.87423 2218 1.81287
546 1.86202 2325 1.81121
588 1.85588 2415 1.81004
644 1.84950 2625 1.80708
656 1.84832 2767 1.80418
707 1.84418 2977 1.80189
1014 1.83055 3170 1.79884
1309 1.82446 3448 1.79570
1548 1.82096 3559 1.79231
1129 1.82780 3846 1.78778
1367 1.82354 3960 1.78411
1529 1.82122 4132 1.77931
1692 1.81910 4415 1.77484
1711 1.81889 4556 1.77021

Refractive index at each wavelength

Refractive index at each wavelength

Spectral transmittance (t=1.0mm)

Spectral transmittance (t=1.0mm)

K-GIR79

PDFデータダウンロード
Contact us for information and questions
To Header