Prisms
Features
Prisms maybe used in an optical system so that the exit beam may be reflected from the entrance direction.The images produced by prisms can be made inverted or rotated.
Specifications
90 Degree Bending Prisms
90 Degree right angle bending prisms utilize the inherent total internal reflection (TIR) at the hypotenuse to invert the image and achieve a 90° change in direction. Antireflection coatings are applied to the two legs of a standard right angle prism (RAP) to maximize the overall throughput and reduce back-reflections off the interfaces to near zero. Because the internal reflection is independent of wavelength, these prisms can also be used as high energy 90° reflectors for broadband applications where metal mirrors are too absorbing and dielectric mirrors do not reflect a wide enough bandwidth. The Applications include UV beam routing, beam pick off, and variable delay lines as well as broadband, high energy 90° reflectors. High energy AR and BBAR coatings are applied to Legs. Skight Optics also offer other dimensions and wavelengths in prototype and production quantities.
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Specifications |
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Substrate Material |
fused silica or BK7 glass |
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Surface Figure |
BK7: λ/4 at 633nm ；Fused silica: λ/10 at 633nm |
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Dimensional Tolerance |
+ 0.00mm, - 0.25mm |
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Angular Deviation |
± 3 minutes |
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Chamfer |
0.35mm at 45° typical |
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Coating Technology |
Electron beam multilayer dielectric |
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Antireflection Coating |
Single wavelength AR-R ≤0.25% Broadband AR- Ravg ≤0.50% |
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Surface Quality |
BK7: 20-10 Laser Quality ；Fused Silica:: 10-5 Laser Quality |
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Adhesion and Durability |
Per MIL-C-675C. Insoluble in lab solvents |
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Clear Aperture |
Exceeds central 85% of dimension |
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Damage Threshold |
10J/cm2, 20ns, 20Hz; 1MW/cm2, CW @ 1064nm |
Note: Dimension and specification are available upon requests.