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Corner Cube Retroreflectors > BK7

Introduction

Corner Cube Retroreflectors are triangular prisms consisted of three right angles of 90 degrees. Reflected beam has a characteristic of inevitably returning in the direction of the incoming optical axis. The accuracy is shown with angular deviation (parallelism) between input and output beams. It depends on the mutual perpendicularity of the trihedral surfaces. Using this characteristic they are often used in survey equipment. Processing from fused silica as well as optical glass is available upon your request.
 
 

Standard Specifications

  

 

Items

Standard Precision

High Precision

Material

BK7 Grade A or equivalent Optical Glass

Diameter Range

Ф2mm - Ф100mm

Diameter Tolerance

+0.0/-0.2 mm

+0.0/-0.02 mm

Dimension Tolerance

±0.2

±0.05

Clear Aperture

> 80%

Deviation

180 degrees ± 3 arc seconds

180 degrees ± 2 arc seconds

Flatness

λ/4 at 632.8 nm on big surface

λ/10 at 632.8 nm on other surface

(per 25mm)

λ/8 at 632.8 nm on big surface

λ/10 at 632.8 nm on other surface

(per 25mm)

Surface Quality

scratch and dig 60-40

scratch and dig 20-10

Wavefront Distortion

λ/2 at 632.8 nm

Bevel

0.5 (0/-0.3) mm

Material, besides BK7, fused silica and any other materials are available.

Please show us the size and the coating specification.

  
   
 

Part NO.

Diameter (mm)

Height (mm)

PCC0101

15.0

11.3

PCC0102

25.4

19.0

PCC0103

38.0

28.5

PCC0104

50.8

37.5

 

  

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