Fused Silica Optics Co.,LTD
Fused Silica Optics Co.,Ltd
Add to Cart
Fused Silica Double Right Angle Laser Prism for Surveying
An optical prism is a transparent optical element with flat, polished surfaces that refract light. At least one surface must be angled—elements with two parallel surfaces are not prisms. The traditional geometrical shape of an optical prism is that of a triangular prism with a triangular base and rectangular sides, and in colloquial use "prism" usually refers to this type. Some types of optical prism are not in fact in the shape of geometric prisms. Prisms can be made from any material that is transparent to the wavelengths for which they are designed. Typical materials include glass, plastic, and fluorite.
Prisms may be 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.
Right-Angle prisms are commonly used to achieve a 90 degree or 180 degree light path bend. Depending on prisms orientation, images will be inverted,but correct left-to-right. Utilizing the character of critical angle, highly-efficient reflection inside is one of basic function of right angle prisms. Right angle prisms are easy to be mounted, have better stability and hardness for mechanical stress, are the best choice for all kinds of apparatus and instruments.
Specifications
| Substrate Material | Fused silica or BK7 glass |
| Surface Figure | BK7: λ/4 at 633nm ；Fused silica: λ/10 at 633nm |
| Dimensional Tolerance | + 0.00mm, - 0.25mm |
| Angular Deviation | ± 3 minutes |
| Chamfer | 0.35mm at 45° typical |
| Coating Technology | Electron beam multilayer dielectric |
| Antireflection Coating | Single wavelength AR-R ≤0.25% Broadband AR- Ravg ≤0.50% |
| Surface Quality | BK7: 20-10 Laser Quality ；Fused Silica:: 10-5 Laser Quality |
| Adhesion and Durability | Per MIL-C-675C. Insoluble in lab solvents |
| Clear Aperture | Exceeds central 85% of dimension |
| Damage Threshold | 10J/cm2, 20ns, 20Hz; 1MW/cm2, CW @ 1064nm |