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Penta prisms
1.Shape: Pentagonal cross-section with two reflective surfaces (typically coated) and three transmitting surfaces.
2.Key Angles:
90° between the entrance and exit faces.
45° between the two reflective surfaces
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Fuzhou Chinaproduct orgin :
ChinaHigh Precision Optical Glass Penta Prisms
Penta prisms is a specialized optical prism designed to deflect light by a constant 90° angle, independent of the prism’s rotation or alignment errors.
Its unique geometry ensures high precision in beam steering, making it indispensable in applications requiring absolute angular stability.
Specifications: | |
Material: | N-BK7, Fused silica or other optical glass |
Dimension Tolerance: | +0.0, -0.2mm |
Surface quality: | 60-40 S/D |
Surface flatness: | λ/4 @ 632.8nm |
Angle Tolerance: | ±30 arc sec(Standard); ±5 arc sec(High Precision) |
Clear Aperture: | >85% of dimension |
Bevel: | <0.25mm×45° |
Coating: | Surfaces S1 & S2 :Single layer MgF2 coating |
Surfaces S3 & S4: Aluminized and painted black |
Typical Sizes: | |
Deminsion:A×h(mm) | Deminsion:Axh(mm) |
2.5×2.5 | 2.5×2.5 |
7.0×5.0 | 10.0×10.0 |
15.0×15.0 | 20.0×20.0 |
Other Size, coating are available.
Application scenarios:
(1)Imaging system: Light can be reflected multiple times to present an upright image in the viewfinder for telescopes and photography;
(2)Measuring instruments: used for total stations or laser rangefinders, which have important applications in industrial surveying, real estate surveying, military ranging, etc.
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