RMI Laser Optics and Coatings Prototype Through Production

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OPTATEC
June 17-20
Frankfurt, Germany
Booth #G45

Friday, 09 May 2008

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Penta Prisms

Penta Prisms

Penta Prisms deviate a beam by 90º without inverting or reversing the image. These prisms also have the property of constant deviation, which means that the 90º deviation angle applies to all rays transmitted by the effective aperture, regardless of their angle with respect to the optical axis. Penta prisms are thus very useful in applications where prism orientation cannot be precisely controlled. Due to the geometry of penta prisms, the reflecting surfaces due not utilize total internal reflection and must be coated with a metal or dielectric coating.

RMI STANDARD SPECIFICATIONS
Materials:	BK7
Surface Figure:	λ/10 at 633 nm, all polished surfaces
Surface Quality:	20-10, all polished surfaces
Dimensions:	A=B=C
Dimensional Tolerance:	+ 0.000", – 0.010"
Angular Deviation:	≤ 3 arc minutes
Bevels:	0.010" – 0.030" at 45º
Clear Aperture:	Central 85% of diameter

Applicable Coatings Quick Links

VIS / NIR Coatings
    Single Layer Anti-Reflection (SAR)
    Narrowband Anti-Reflection (NAR)
    Broadband Anti-Reflection (BAR)

Metal Coatings
    Bare Aluminum (BAL)
    Bare Gold (BAU)
    Protected Aluminum (PAL)
    Enhanced Aluminum (EAL)
    Protected Silver (PAG)
    Enhanced Silver (EAG)
    Protected Gold (PAU)
    Enhanced Gold (EAU)

Last Updated ( Wednesday, 02 May 2007 )

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Please consult your export control administrator or contact RMI for more information.

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