ALKOR Technologies - your CRYSTAL optics supplier.   ALKOR Technologies - your CRYSTAL optics supplier.
ALKOR Technologies - your CRYSTAL optics supplier.
Materials>>Sapphire>>Sapphire lenses

Custom Sapphire lenses

Alkor Technologies - manufacturer of sapphire lenses. We offer custom sapphire optical lenses at very competitive price with rapid worldwide delivery. Please send us your sapphire lens specifications and we will quote it for you within 24 hours.

Alkor manufactures:

  • Sapphire micro-optics: sapphire lenses 2-3 mm diameter;
  • Sapphire lenses (planoconvex, planoconcave, bullet lenses);
  • Custom AR coating for visible or IR bands.

Sapphire is often chosen as an optical substrate when the application requires high mechanical durability and high thermal conductivity, as well as good transmission between UV, Visible, and IR regions. The tradeoff is that Sapphire is one of the most difficult materials to process and to achieve high quality optical specifications. Alkor Technologies offers custom shapes, sizes and coating specifications for our Sapphire lenses.

If you have a custom application requiring Sapphire lenses and coatings, let our technical staff provide you with the optimum, cost effective solution. 

See also: Sapphire windows; Sapphire windows catalog Sapphire transmission.

Standard Specifications
Material Optical grade single Sapphire crystal
Dimensions Min Dia 2mm - Max. Dia 30 ± 0.0/-0.1mm
Thickness ± 0.10mm
Surfaces 60/40 or 40/20
Edges Fine Ground
Flatness ≤5 Fringes
Clear Aperture Diameter 90%
Centration 3 Arc min

Sapphire refractive index

No = Ordinary RayNe = Extraordinary Ray

Wavelength, μm
No
Ne
0.193
1.92879
1.91743
0.213
1.88903
1.87839
0.222
1.8754
1.86504
0.226
1.87017
1.85991
0.244
1.85059
1.84075
0.248
1.84696
1.83719
0.257
1.83932
1.82972
0.266
1.83304
1.82358
0.280
1.82437
1.81509
0.308
1.81096
1.80198
0.325
1.80467
1.79582
0.337
1.80082
1.79206
0.351
1.79693
1.78825
0.355
1.79598
1.78732
0.442
1.78038
1.77206
0.458
1.77843
1.77015
0.488
1.7753
1.76711
0.515
1.77304
1.76486
0.532
1.7717
1.76355
0.590
1.76804
1.75996
0.633
1.7659
1.75787
0.670
1.76433
1.75632
0.694
1.76341
1.75542
0.755
1.76141
1.75346
0.780
1.76068
1.75274
0.800
1.76013
1.7522
0.820
1.75961
1.75168
0.980
1.75607
1.81974
1.064
1.75449
1.74663
1.320
1.75009
1.74227
1.550
1.74618
1.73838
2.010
1.73748
1.72973
2.249
1.73232
1.72432
2.703
1.719
1.711
2.941
1.712
1.704
3.333
1.701
1.693
3.704
1.687
1.679
4.000
1.674
1.666
4.348
1.658
1.65
4.762
1.636
1.628
5.000
1.623
1.615
5.263
1.607
1.599

Sapphire (Al2O3) is used for lenses in 190 nm - 5 ΅m wavelength range. Sapphire exhibits the unique capability of having a broad transmission range and high optical transmission: from the vacuum ultraviolet to the infrared spectrum. Sapphire is ideal for applications where high power, high pressure, vacuum, or corrosive atmospheres are a consideration.

Sapphire Optics

Materials
• Sapphire

Coatings
• Anti-Reflective
• Partial Reflector
• Dielectric 193 nm - 5 ΅m

Features
• Environmentally Durable
• High Thermal Conductivity
• Windows Round/Rectangular
• Wedges
• Spherical Lenses