Half Penta Prism
Description
Half-Penta prisms or Semipentaprisms are used to deviate the line of sight by 45° without inverting or reverting the image. The beam is reflected twice in the prism, with one reflection happening at less than the critical angle, therefore the prism requires aluminized and over-coated with Inconel and black paint for this surface to be usable in practice. Combining a Half-Penta Prism with a corresponding size Schmidt roof prism cerates a Pechan prism pair. The Pechan prism pair will invert or revert the image while not deviating the line of sight.
These prisms are fabricated from N-BK7 etc
They can be AR coated on the incidence face.
Half Penta Prism
Specifications |
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|---|---|
| Material: | BK7 |
| Dimension (A): | 25 mm |
| Dimension (B): | 15 mm |
| Mounting: | Unmounted |
| Angle Tolerance: | 3 arc min |
Features
Half penta Prisms
Penta Prisms
roof prisms
Applications
Telescope
For pricing, technical or any other questions please contact the supplier
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- No markups, no fees
- Direct contact with supplier
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How to order?
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Ships from:
China
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Sold by:
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On FindLight:
since 2015
Frequently Asked Questions
You can combine a Half Penta Prism with a corresponding size Schmidt roof prism to create a Pechan prism pair.
Half Penta Prisms are used to deviate the line of sight by 45° without inverting or reverting the image.
Yes, the Half Penta Prism can be AR coated on the incidence face.
The Half Penta Prism is fabricated from N-BK7 etc.
The beam is reflected twice in the prism.