Description
Penta Prisms – 90° Beam Deviation with Constant Angle
Detailed Description:
Penta Prisms are five-sided prisms that deviate a light beam by exactly 90°, regardless of the input angle, while maintaining image orientation (no inversion or reversion). This constant deviation property makes them essential for surveying instruments, rangefinders, and optical alignment systems.
Key Specifications:
- Materials: BK7, H-K9L, Fused Silica
- Size: 10mm – 100mm
- Deviation Angle: 90° ±5′
- Angle Tolerance: ±1′ ~ ±5′
- Surface Quality: 40/20, 20/10
- Reflectivity: >98% (protected Al/Ag coating on two reflective faces)
- Coating: AR coating on input/output faces, reflective coating on two diagonal faces
Applications:
Surveying instruments, laser rangefinders, periscopes, optical alignment systems, imaging systems.
