The right-angle prisms are often preferable to an inclined mirror in applications involving severe acoustic or inertial loads. This is because a right-angle prism is easier to mount and deforms much less than a mirror in response to external mechanical stress. Very high transmission can be achieved by using the hypotenuse face in total internal reflection, and by antireflective coating the entrance and exit faces. Alternatively, the hypotenuse face can be used in external reflection, and coating with a metallic reflective coating.
A Right-Angle Prism is used as a mirror to deviate light through 90 degree, and also as a retroreflector to deflect light throgh 180 degree by total internal reflection.
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90-degree Deflection
90 degree deflection occurs at the hyotenuse face.The image is erected and reversed
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180-degree Deflection
180 degree deflection uses with hypotenuse as the entrance and exit face.The mail application of it is used as a retroreflector provided that the plane of incident beam includes the vertex.
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Applications:
Projection Optics Systems
Imaging Optics Systems
Optical Measurement Systems
Optical Display Systems
Capability:
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Attribute
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Commercial
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High Precision
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Material
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BK7, Fused Silica, CaF2, MgF2
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Typical Diameter A×B×C(mm)
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5×5×5, 12.7×12.7×12.7,
25.4×25.4×25.4, 50.8×50.8×50.8
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Diameter Tolerance
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+0.0, -0.2mm
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+0.0, -0.05mm
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Angle Tolerance
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±1’
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±5”
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Surface Quality
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60-40 (S/D)
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10-5(S/D)
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Flatness
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λ/4 @ 632.8nm
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λ/10 @ 632.8nm
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Bevel (face width × 45°mm)
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0.2 - 0.5
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0.05 - 0.2
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Note: Other sizes and coatings are available upon request.
BK7 Right-Angle Prism
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3 min.
deviation
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1 min.
deviation
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30 sec.
deviation
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10 sec.
deviation
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Size(mm)
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Part No.
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Part No.
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Part No.
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Part No.
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A=B=C=3.2
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RAP3001
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RAP3002
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RAP3003
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RAP3004
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A=B=C=5.0
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RAP5001
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RAP5002
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RAP5003
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RAP5004
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A=B=C=10.0
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RAP1001
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RAP1002
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RAP1003
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RAP1004
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A=B=C=25.4
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RAP2501
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RAP2502
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RAP2503
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RAP2504
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A=B=C=50.8
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RAP5001
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RAP5002
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RAP5003
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RAP5004
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Note： Coating is available upon request.
UV Fused Silica Right-Angle Prism
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3 min.
deviation
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1 min.
deviation
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30 sec.
deviation
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Size (mm)
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Part No.
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Part No.
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Part No.
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A=B=C=12.7
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RAP1210
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RAP1211
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RAP1212
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A=B=C=25.4
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RAP2510
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RAP2511
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RAP2512
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Note： Coating is available upon request.
中文版
English
Right Angle Prism