Product type: Prism Glass. Application: Survey. Model: G640T.
Overview
The G640t Cube Corner Crystal Pyramid Optical Glass Survey Prism Trihedral Retroreflector for Surveying Accessories is supplied as an optical prism made from Glass. Listed geometry: diameter 64mm, circle shape. Surface quality 40/20; flatness 1/4 Lambda. Listed for Survey applications. Dimensions, material grade, coating and finish can be quoted to your drawing; the values above are the listed starting point.
Specifications
| Material | Glass |
|---|---|
| Type | Prism Glass |
| Shape | Circle |
| Diameter | 64mm |
| Surface Quality | 40/20 |
| Flatness | 1/4 Lambda |
| Application | Survey |
| Usage | Survey |
| Model NO. | G640T |
| Dimension Tolerance | +0/-0.05mm |
| Supplier | Mount Laser (Changzhou) Instrument Co., Ltd. |
What to specify when you request a quote
- Material — listed as “Glass”; name the glass or crystal.
- Geometry — listed as “64mm”; give diameter, focal length or radii, angles and tolerances.
- Surface figure — listed as “40/20”; quote surface figure (λ) and scratch-dig.
- Centring and edges — state centration and edge chamfer.
- Coating — list the band and reflectance or transmission target.
Engineering guides for this part
How parts like this are machined and finished is covered in Flat Glass Polishing Process for Precision Substrates. Before sending a drawing, check Design Guide for Holes, Slots, and Edges in Custom Glass Parts.
FAQ
What is the G640t Cube Corner Crystal Pyramid Optical Glass Survey Prism Trihedral Retroreflector for Surveying Accessories made of? expand_more
It is listed as Glass. Other grades can be quoted if your application needs different transmission, thermal or chemical properties.
What sizes and thicknesses are available? expand_more
The listing gives diameter 64mm. Custom outlines and thicknesses are made to drawing; state the tolerance you need.
Where is this optical prism used? expand_more
Listed applications: Survey.
What should I include in a quote request? expand_more
Include material, geometry, surface figure, centring and edges and coating, plus quantity and a drawing if the part is custom.
