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BK7 And Fused Silica Glass Dove Prisms

Invented by H.W. Dove, Dove Prisms are also known Reversion prisms.  When the prism is rotated about its length axis, the image viewed through the prism rotates at twice the prism rotation rate.  This is an unusual and sometimes useful property for special applications. Entry and exit faces are anti-reflection coated.
  • product origin:

    China
  • shipping port:

    Fuzhou China
  • lead time:

    4 working weeks
  • payment:

    T/T Payment, Western Union
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  • description

1.  What is dove prism?

 

A Dove prism is used to rotate, invert, or retroreflect an image,when the prism is rotated about its length axis,the image viewed through the prism rotates at twice the prism rotation rate.  Invented by H.W. Dove, Dove Prisms are also known Reversion prisms.  When the prism is rotated about its length axis, the image viewed through the prism rotates at twice the prism rotation rate


2. What's the applications of dove prism?


Dove prisms are mainly used as image rotators


3. What are the main materials of dove prism?


We manufacture dowell prism by N-BK7 Grade A optical glass.


  dove prisms dove prisms


Specifications:

Material:  N-BK7 Grade A optical glass,
Dimensional tolerance: +/-0.1mm
Surface quality:   60-40
Flatness: λ/4@632.8nm                                                             
Angle tolerance:  ±1 arcmin
Bevel:  Protective
Coating:  Optional


Part No. A (mm) B (mm) h (mm)
UDVP001 21.1 5 5
UDVP002 42.3 10 10
UDVP003 63.4 15 15
UDVP004 84.5 20 20

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2) Protected Aluminum: Ravg > 87% from 400nm to 800nm

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Common Specifications:

Substrate Materials: N-BK7, Fused silica, Pyrex;Float glass

Dimensional tolerance: +/-0.1mm

Surface quality:  60-40

Parallelism:  3’

Flatness: λ/4 per 25mm@633nm

Bevel: Protective

One surface: Polished and Metallic coating

The other surface: Fine ground


Note: Aluminum is the most widely used metal reflection film, from near UV to near IR, have high reflectivity, and with low cost. Silver has higher reflectivity in the visible and near infrared wavelength than the aluminum film, but the silver in the air will be rapid oxidation, color darkening, makes the film performance and firmness declined rapidly. Gold film has a good consistency with high reflectivity in the near, middle and far infrared range, can control the thermal radiation effectively, but it is relatively soft, easy bruising, and should be pay very attention to clean, and the cost is very high.




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