Contact Us

Calcium Fluoride Lenses

  • Introduction


Calcium Fluoride Lenses


Hyperion Optics supplies uncoated 1/2 inch and 1 inch in diameter Calcium Fluoride (CaF2) lenses. Please talk to our technicians for your custom requirement. We are also able to provide coated products with AR coating through 1.65µm or 2-5µm.


CaF2 has high transmission rate through 0.18-8.0 microns, used for UV and IR spectral high transmission applications. With its outstanding laser power damage threshold CaF2 lenses also are widely used under excimer laser environment. Its refractive index is comparatively low from 180nm up to 8.0 microns, ranges from 1.35 to 1.51. CaF2 has low dispersion, in visible wavelength applications, it shows superior vivid and exquisite imaging performance compared to regular optical glasses.


Calcium Fluoride (CaF2) lenses transmission


However, Calcium Fluoride components are difficult to manufacture in actual production. The material itself is soft and easy to leave fabrication marks and scratches on the polished surfaces. At Hyperion Optics, with our decade experience of CaF2 production, we have outstanding surface accuracy and cosmetic control method, our typical surface quality grade is 40-20 according to MIL-C-13830A.


Calcium Fluoride

COMMERCIAL GRADE

FACTORY STANDARD

PRECISION GRADE

Diameter Tolerance(mm)

+0/-0.05

+0/-0.03

+0/-0.02

Center Thickness(mm)

±0.01

±0.03

±0.025

Wedge (Arc min)

6

<3

<1

Cosmetic(MIL-C-13830A)

100-80

60-40

40-20

Figure Tolerance inλ(Pow/irreg)

2.5 - 1.5

2 - 1

1/0.25

Coating (T% avg)

Depends on Different Working Wavelength

Materials

Calcium Fluoride

Related Content
  • Germanium Lenses

    Germanium Lenses

    February 17, 2017In the range of 2-12 μm, germanium is the most commonly used material for the production of spherical lenses and windows for high efficiency infrared in imaging system. Germanium has a high refractiv...view
  • YAG Crystal

    YAG Crystal

    March 14, 2017Undoped YAG Crystal is an excellent material for UV-IR optical windows, particularly for high temperature and high energy density applications. The mechanical and chemical stability is comparable to s...view
  • Corner Cube Retroreflectors

    Corner Cube Retroreflectors

    February 17, 2017Corner cube is total reflecting prism formed by 3 perpendicular surfaces, where the incident light angle does not influence the final emerging light angle but reflected by 180°, it offers excellent p...view