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OPTICAL ELEMENTS OF GLASS AND CRYSTALS |
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| Small-sized, high-precision lenses |
| clear aperture | 3...50 mm |
| surface quality | III-IV (MIL-20/10) |
| centering | up to 5 μm |
| surface accuracy | up to l/20 at 632.8 nm |
| Mean accuracy lenses |
| clear aperture | 50...300 mm |
| surface quality | V-VI |
| surface accuracy | up to l/4 at 632.8 nm |
| Leucosapphire lenses and windows |
| diameter | up to 70 mm |
| surface quality | 60/40 |
| surface accuracy | up to l/4 at 632.8 nm |
| Optical wedges |
| clear aperture | up to 630 mm |
| thickness | 0.1 of diameter |
| surface error | (0.08±0.015)λ PV |
| Precision prisms |
| deviation of angular parameter | ±1...5" |
| Corner reflector with an error in clear aperture | 4" |
| Mean accuracy plates |
| wedging | 30" |
| clear aperture | up to 500 mm |
| wavefront distortion | l/10 |
| Large-sized optics: mirrors, lenses, windows |
| clear aperture | up to 860 mm |
| surface quality | V-VIII (MIL-80/50) |
| surface accuracy | up to l/8 at 632.8 nm |
| Plates and lenses made of crystals | NaCl, KCl, KBr,ZnSe, Ge, CaF2, liF, BaF2, Al2O3 and others |
| Active elements made of Nd-glass: |
| plane | up to 500õ260õ40 mm |
| cylindrical | up to Ø140õ330 mm |
| Quartz plates λ/2 (λ=0.6328 μm) |
| wavefront distortion | l/10 |
| Details made of glass and vitreous ceramics connected by a deep optical contact | up to 250õ250õ50 mm |
| Waveguides of different configuration made of metal and ceramics for ÑÎ2 lasers | up to 450 mm in lenght |
| Souvenirs | optical glass |
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Optical elements up to 800 mm are covered by mirror, (metal and multiple dielectric), antireflecting, beam splitting, protective and filter coating.
Engineering information:
E-mail: market@niiki.ru
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