Pentagonal prism

Pentagonal prism
  • Pentagonal prism is one of the beam steering devices with fixed angle (90 °). It has two purposes: first, the outgoing light turns the incident light to a certain angle (90 °) regardless of the incident angle on the first side; Second, unlike a right angle prism, its image has neither rotation nor specular reflection. Pentaprism is commonly used in camera viewfinder, image observation system or measuring instrument.

Technical parameters
Items Parameters
Material SF11 class optical glass or BK7 class optical glass
Radius of curvature ± 1mm - ± 50000mm ± 1%
Diameter 3mm-300mm ± 0.1mm
Center thickness tolerance ± 0.05mm (we can process to ± 0.01mm with high precision)
Center deviation 3′(we can process to 30 ″with high precision)
Surface accuracy λ/ 8 (high precision, we can process to 1 / 10λ)
Surface quality 40/20 (we can process to 10-5 with high precision)
Effective caliber ≥90%
Coating Antireflective monolayer MgF2
spectral curve

In addition, we have thousands of stock of K9 Plano convex cylindrical lens, Biconvex cylindrical lens, concave cylindrical lens, Meniscus cylindrical lens, and so on. The price is preferential and the quality is excellent, which can meet your demand for a small order. 

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