Sapphire optical glass penta prism
By adding a wedge and with partial reflective coating on one reflective surface, Penta Prism can be used as Beamsplitter. The transmission/reflection (T/R) ratio of beamsplitter penta prism we offered 20/80, 30/70, 50/50 and etc.
Technical Parameters
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Material
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BK7 Grade A Optical Glass
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Dimension Tolerance
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+0.0/-0.2mm
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90 degree Deviation Tolerance
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Up to 5 arc seconds
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Flatness
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λ/4 @ 632.8nm
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Reflectivity
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Dielectric reflective coating R > 95% per face from 630 to 680 nm
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Beamsplitter Ratio
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T/R: 20/80±5%
T/R: 30/70±5%
T/R: 50/50±5%
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Coating
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Uncoated
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Features:
deviate a beam of light by 90°.
Applications:
Plumb Level, Surveying, Alignment, Range finding and Optical Tooling, Projection Optics Systems, Imaging Optics Systems, Optical Measurement Systems, Optical Display Systems, etc.
Description:
A pentaprism is a five-sided reflecting prism used to deviate a beam of light by 90°. It has two important characters, firstly the beam reflects inside the prism twice,allowing the transmission of an image through a right angle without inverting it (that is, without changing the image's handedness) as an ordinary right-angle prism or mirror would. Secondly with the prism, a constant deviation angle applies to all rays transmitted by the useful aperture, regardless of the angles between these rays and the optical axis. So deviation is nothing to with prisms’ orientation.
Penta Prisms are used to define right angles in optical systems. Penta Prisms, which provide right handed images, feature a ray deviation of 90°. Penta Prisms are five-sided prisms are unaffected by slight movements. Bing Xin Optics offers a variety of Penta Prisms for optimal performance in the Ultraviolet (UV), Visible, or Infrared (IR) spectrums.
Spherical Lens 