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Equilateral Dispersing Prisms > BK7 ED Prism

Introduction

Equilateral dispersing prisms are used for wavelength separation applications. A light ray is twice refracted passing through the prism with total deviation denoted by θd the figure below. Deviation is a function of refractive index and hence wavelength. Angular dispersion ∆θd is the difference in deviation for light rays having different wavelengths and varies with prism orientation.
 
 

Standard Specifications

  
 

Items

Specification

Material

BK7 Grade A or equivalent Optical Glass

Dimension Tolerance

±0.20 mm

Clear Aperture

> 80%

Surface Quality

scratch and dig 60-40

Angle Tolerance

60°±3 arc minutes

Flatness

λ/2 at 632.8 nm

Notes:

1. Material besides BK7, F2 and any other optical glass is available.

2. Angle tolerance such as 3’, 1’, 10” is available.

3. Surface Quality we could reach 20-10 scratch and dig.

4. Please show us the size and the coating specification.

  
   

 

Part NO.

Size (mm)

Angle Tolerance

PED0101

25.0

3 arc minutes

PED0102

30.0

3 arc minutes

PED0103

40.0

3 arc minutes

PED0104

45.0

3 arc minutes

PED0105

50.0

3 arc minutes

 

 

  

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