90 Degrees Deviation Penta Prism

Brand Name:STAR OPTIC
Certification:RoHS, ISO9001
Model Number:PTP
Minimum Order Quantity:Negotiable
Delivery Time:Negotiable
Payment Terms:T/T, Western Union, Paypal
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Location: Wuhan China
Address: 4th floor, building 9, Optics Valley New Dynamic, 5th Hi-Tech road, East lake Hi-Tech Zone, Wuhan, China
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Product Details

Penta Prism, 90 Degrees Deviation Prism, Right-Handed Image Prism

Overview:

A Penta Prism is a five-sided reflecting prism used to deviate a beam of light by a constant 90°, even if the entry beam is not at 90° to the prism. 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.


The reflections inside the prism are not caused by total internal reflection, since the beams are incident at an angle less than the critical angle (the minimum angle for total internal reflection). Instead, the two faces are coated to provide mirror surfaces. The two opposite transmitting faces are often coated with an antireflection coating to reduce spurious reflections. The fifth face of the prism is not used optically but truncates what would otherwise be an awkward angle joining the two mirrored faces.


Penta prism is the ideal optical tool for defining a right angle in an optical system, laser level and alignment.


General Specifications of Penta Prism:

MaterialBK7, UV grade Fused Silica
Dimension Tolerance±0.2mm

90° Deviation Tolerance

30 arc seconds
Flatnessλ/4@632.8nm
Surface Quality60/40 scratch and dig
Clear Aperture>90%
ChamferProtective<0.5mm@45°
Coating

Protected Aluminum reflective coating
Single Layer MgF2 AR coating at VIS


Standard Products of Penta Prism:

PN.MaterialA(mm)

h

(mm)

DeviationCoating
PTP0706N-BK77.06.030 arc secMAL + MgF2
PTP1010N-BK710.010.030 arc secMAL + MgF2
PTP2020N-BK720.020.030 arc secMAL + MgF2
PTP2525N-BK725.425.430 arc secMAL + MgF2


China 90 Degrees Deviation Penta Prism supplier

90 Degrees Deviation Penta Prism

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