Penta
- Prisms |
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| There are two important properties in
penta-prisms. The first one is that the image is neither inverted
nor reversed as it is deviated by 90 degrees. Secondly, the penta-prism
is a constant deviation prism, meaning that the same exact 90-degree
deviation applies to all rays transmitted by the useful aperture,regardless
of the angles between these rays and the optical axis. They are
often used in range finding, surveying, alignment and cinephotography.
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Specifications |
Material |
BK7 glass |
Wavelength
Range |
330-2100nm |
Beam Deviation |
905 |
Dimensions |
+0-0.1mm |
Angles |
15 arc min |
Surface Quality |
60-40 |
Surface Flatness |
/2 |
Reflective Coating |
A1 overcoated-Inconel&
black paint on reflecting surface only |
AR Coating |
R<0.5% per surface,
400-700nm |
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Right Angle Prisms