DETAILS
What is a periscope?
A periscope is an optical instrument that uses a system of prisms, lenses or mirrors to reflect images through a tube.
Light from a distant object strikes the top mirror and is then reflected at an angle of 90 degrees down the periscope tube.
Periscope Prism vs Mirror
| Product Name | Periscope prism |
| Dimensions | 0.5-200mm |
| Dimensional Tolerance | ±0.1mm |
| Material | BK7 Fused Silica |
| Surface quality | 60/40 or better |
| Surface Flatness | λ/4@632.8nm |
| Angle Tolerance | ±3′ |
| Clear aperture | ＞90% |
| Chamfer | ＜0.25mm×45° |
| Coating | Uncoated, or customized |
