Home / Custom / Optical Components / Optical Prism / Corner Cube Retroreflector 
BK7 and UVFS Corner Cube Retroreflector Prism are designed to deviate incident light by 180 degrees independently of an angle of incidence. These corner cube prisms have three mirror surfaces with angles at 90° to each other, juxtaposed to form the corner of a cube with the entrance face perpendicular to the cube's diagonal.
Optical glass such as K9, fused silica, sapphire, MgF2, silicon (Si), ZnSe, ZnS, etc. These materials possess high transmittance, low absorption, low scattering, uniform refractive index, and specific dispersion characteristics.
Precisely hemispherical. The machining precision of the center and radius of curvature of the sphere is extremely high.
The surface is precision polished to an optical grade of 10-5 to ensure image quality and reduce scattering and aberrations.
An AR coating is typically applied to the concave surface to maximize the transmittance of specific wavelengths of light (e.g. visible light) and reduce reflection loss.
| General spec. | High precision spec. | |
|---|---|---|
| Material | Optical glass (H-K9L, BK7, or others), Fused silica | |
| Dimension | 2mm~80mm | |
| Dimension tolerance | ±0.1mm | ±0.02mm |
| 90°Deviation tolerance | <3 arc min | < 3arc sec. |
| Surface flatness @ 633nm | λ/2 | λ/4 |
| Surface quality | 60-40 | 20-10 |
| Coating | Upon the customer’s request | |
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