Rhomboid prism can displace a laser beam without change the image orientation, the input beam is totally internal reflected by two 45degree faces and goes out from the output face. Then, a lateral displacement is produced. Higher transmission rate can be achieved by anti-reflective coating on the input and output faces. Rhomboid prism is always used in stereoscopic system and periscope system. |
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Currently we can make angle tolerance <5 arc seconds, total beam deviation <30 arc seconds. Large size is also available. |
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Specifications |
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Material |
BK7 Grade A optical glass |
Dimension Tolerance |
±0.2mm |
Beam Deviation |
Up to 30 arc seconds |
Angle Tolerance |
Up to 5 arc seconds |
Flatness |
λ/4@632.8nm |
Surface Quality |
60/40 scratch and dig |
Coating |
AR coating available | |
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Roof Rhomboid Prism |
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Roof rhomboid prism can produce a lateral displacement between input and output beam, and also the output image is reversed. Roof rhomboid prism is always used in stereoscopic system and periscope system. |
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Material |
BK7 Grade A optical glass |
Dimension Tolerance |
±0.2mm |
Clear Aperture |
>80% |
Beam Deviation |
Up to 30 arc seconds |
Roof Angle Tolerance |
<5 arc seconds |
Flatness |
λ/4@632.8nm |
Surface Quality |
60/40 scratch and dig | | |