Penta prism can deviate an incident beam without inverting or reversing to 90°.The deviation angle of 90° is independent of any rotation of the prism about an axis parallel to the line of intersection of the two reflecting faces.
specification:
specification:
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Material:
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BK7 Grade A
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Diameter Tolerance:
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±0.2mm
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Clear Aperture:
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>Central 80%
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Flatness :
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l/2
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Surface Quality:
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60/40 scratch and dig
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Deviation Tolerance:
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See the table as follow
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Bevel:
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<0.2mm×45°
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Coating:
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S1&S2:Single layer MgF2 coating
S3&S4:Aluminized and painted black
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