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Aluminized Optical Prisms Height 12.7mm Half Penta Prism Used In Telescopes

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Aluminized Optical Prisms Height 12.7mm Half Penta Prism Used In Telescopes

Brand Name : STAR OPTIC

Model Number : HPP

Certification : RoHS, ISO9001

Place of Origin : Wuhan, China

MOQ : Negotiable

Price : Negotiable

Payment Terms : T/T, Western Union, Paypal

Supply Ability : 50000pcs/Month

Delivery Time : Negotiable

Packaging Details : Safe and dust-free packing

Product Name : Half Penta Prism

Feature : deviate the beam by 45° without inverting or reverting the image

eometrical structure : Hlaf cut of penta prism

Applications : projection and imaging system

Size : 12.7-18mm and custom available

Surface : Non-TIR surface can be coated or HR coated

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Half Penta Prism, Semipentaprisms, Used In Telescopes

Overview:

Half-Penta prisms also known as Bauernfeind prisms or Semi-pentaprisms are used to deviate the line of sight by 45° without inverting or reverting the image. It is widely used in telescopes and also has applications in projection and imaging system, in microscope tubes, and in geodesy.

The Half-penta prism has the geometrical structure of a penta prism cut in half. The beam is reflected twice in the prism, first with total internal reflection and a second time on a coated reflecting surface. The prism requires aluminized and over-coated with Inconel and black paint for the non-TIR surface to be usable in practice.

Combining a Half-Penta Prism with a correspond size Schmidt roof prism creates a Pechan prism pair. The Pechan prism pair will invert or revert the image while not deviating the line of sight.

General Specifications of Half-penta Prism:

Material BK7 Aluminized Optical Prisms Height 12.7mm Half Penta Prism Used In Telescopes
Dimension Tolerance ±0.2mm
Angle Tolerance <3 arc minutes
Roof Angle Tolerance <3 arc sec
Flatness λ/4@632.8nm
Surface Quality 60/40 scratch and dig
Clear Aperture >90%
Coating No coating, available

Standard Products of Half-penta Prism:

PN. Material

A

(mm)

h

(mm)

AR Coating

 HR Coating
HPP1212 N-BK7 12.7 12.7 Uncoated Uncoated
HPP1616 N-BK7 16.5 16.5 Uncoated Uncoated
HPP1820 N-BK7 18.0 20 Uncoated Uncoated
HPP1212-450-650-MAL N-BK7 12.7 12.7 AR@450-650nm

Protected Aluminum
HPP1616-450-650-MAL N-BK7 16.5 16.5 AR@450-650nm

Protected Aluminum
HPP1820-450-650-MAL N-BK7 18.0 20.0 AR@450-650nm

Protected Aluminum


Product Tags:

Optical Prisms 12.7mm

      

12.7mm Half Penta Prism

      

Aluminized Optical Prisms

      
Quality Aluminized Optical Prisms Height 12.7mm Half Penta Prism Used In Telescopes for sale

Aluminized Optical Prisms Height 12.7mm Half Penta Prism Used In Telescopes Images

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