Prisms

Application: the prisms are intended for use at high rocking angle to avoid large prism dimensions.
Name: K-0^о

Material BK-7 quality optical glass without striae at 2 mutually perpendicular directions Dimensions Max. 100х100х100 mm Dimensional tolerance ±0.1 mm Surface flatness ¼ at λ= 632.8 nm Surface quality 0.01-mm wide scratches of total length 2x over working aperture Transmission coefficient 45±5% regardless of polarization Polarization S and P polarization components approved within 10% Absorption < 10% Transmitted beam deviation ≤ 5 arc min Reflected beam deviation 90о ± 5 arc min Angle of incidence 0о±5о Antireflection coating wide-band, multilayer coating, R<0,5% Temperature span from –50оС to +90оС Cleaning Non-abrasive method, acetone or isopropyl alcohol on lens tissue are recommended Damage threshold 100W/cm2 CW, 2 J/cm2 with 10 n/sec pulses

Application: the prisms are intended for use in devices for ray path variation, change of direction of optic axis system, image reversal, ray path downsizing, etc.

Material BK-7 quality optical glass without striae at 2 mutually perpendicular directions Dimensions Edge length ≤ 200 mm; edge width ≤ 100 mm Dimensional tolerance +0/-0.05 mm Angle tolerance 3 arc min or up to 5 arc sec on request Chamfer up to 3 mm х 45о Surface flatness ¼ at λ= 632.8 nm Surface quality 0.01-mm wide scratches of total length 2x over working aperture

Application: The prisms are intended for use in mechanical beam scanning systems and image scanning systems.

Material BK-7 quality optical glass, glass ceramics Dimensions 120÷300 mm Dimensional tolerance +0/-0.05 mm Number of edges 6÷12 Angle tolerance ± 1 arc sec Surface flatness 1/10 at λ= 632.8 nm Surface quality 0.006-mm wide scratches of total length 2x over working aperture Coating Aluminum of zero group of strength

Name

BP-90о penta prism

BkP-90о penta prism with roof

Application: Penta is a five sided prism. It reflects light rays through an angle of 90° by two reflections. It does not invert or revert the image. Slight movement of the prism does not affect the true right angle at which light rays are reflected. This feature makes this prism useful for range-finders. It also shortens the length of an instrument.

Excellent for use in front of movie camera lens for taking shots off to the side without subject's knowledge.

Material BK-7 quality optical glass without striae at 2 mutually perpendicular directions Dimensions Edge length ≤ 250 mm; edge width ≤ 100 mm Dimensional tolerance +0/-0.1 mm Angle tolerance 3 arc min or up to 5 arc sec on request Chamfer up to 3 mm х 45о Surface flatness 1/4 at λ= 632.8 nm Surface quality 0.01-mm wide scratches of total length 2x over working aperture

Application: Triple prisms are intended for use in interferometers for incident and reflected beams alignment.

Material BK-7 quality optical glass, fused silica Dimensions bottom diameter ≤ 80 mm; others - on request Dimensional tolerance +0/-0.05 mm Angle tolerance ± 10 arc sec or up to 2 arc sec on request Chamfer 0,25÷0,5 mm at 45о Flatness 1/10 at λ= 632.8 nm Surface quality 0.06-mm wide scratches of total length 2x over working aperture Coating without coating or legs coated with Al and black varnish protection Cleaning Non-abrasive method, acetone or isopropyl alcohol on lens tissue are recommended Damage threshold 100W/cm2 CW, 2 J/cm2 with 10 n/sec pulses