|Material||N-BK7 or equivalent||Dimension Tolerance||+0/-0.2mm|
|Surface Quality||60/40 S/D||Clear Aperture||>80%|
<λfirstname.lastname@example.org for big surface,
<λemail@example.com for small surfaces
|Deviation||Up to 180°±5 arc seconds||Coating||None, Available|
Optical corner cube reflectors are made of three reflecting surface, each of them is perpendicular, corner cube reflector can return an incident light beam in the original direction whatever the incident direction it is. It can offer excellent parallelism of incoming and reflecting beams. It is usually specified as an angular deviation.
Hangzhou Shalom EO offers cone cube retro-reflectors made from BK7, they are often used in surveying and laser ranging applications.