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Beam Dividers and Fresnel Prisms

Beam Dividers and Fresnel Prisms
Fresnel prisms are simple prisms but manufactured using the stepped surface approach of a Fresnel lens.  Fresnel prisms must not be confused with Fresnel Rhombs or Biprisms.We can offer two types of Fresnel prisms. The simple ones have saw tooth like structure and will deviate a beam of light by the specified angle, some distortion and colour will be created. The beamsplitters have a symmetrical profile and so create w pair of beams symmetrically about the centreline. In this way they act as beam splitters, there is however still some distortion and colour.

 

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Part No. Type Deviation angle Prism angle Aperture length (along grooves mm) Aperture width (mm) Overall size (mm) Material Facet width (mm) Price (Ex.VAT) Buy Now Get Quote
PBA16165 Beam divider 16° 30° 165 165 180 x 180 Acrylic 0.51 £60.10
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PBA2530 Beam divider 25.5° 45° 330 250 355 x 285 Acrylic 0.51 £113.60
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PFA12133 Prism 12° 24° 165 165 178 x 178 PMMA 0.15 £59.75
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PFA16240 Prism 16° 31° 240 240 260 x 260 PMMA 0.15 £71.90
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PFA16450 Prism 16° 30° 450 370 470 x 390 PMMA 0.33 £315.00
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PFA23140 Prism 23° 41° 140 140 160 x 160 PMMA 0.13 £59.75
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Knight Optical (UK) Ltd,
Roebuck Business Park, Harrietsham, Kent, ME17 1AB, England
Phone: +44 (0)1622 859444 • Fax: +44 (0)1622 859555
E-mail: info@knightoptical.co.uk