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Home > Prisms > 14PBR - Pellin-Broca Prisms
Pellin-Broca Prisms
Extremely small loss for p-polarized beam
Separated by wavelength light is conveniently turned by 90° angle with minimum deviation
UVFS prisms provide 1.26° separation between 532 and 1064 nm

In a Pellin-Broca prism, an ordinary dispersing prism is split in half along the bisector of the apex angle. Using a right angle prism, the two halves are joined to create a dispersing prism with an internal right angle bend obtained by total internal reflection. The entrance beam is deviated at 90° angle to its initial direction.

Pellin-Broca Prisms
MaterialABHOrdering code
BK711 mm20 mm6,4 mm14PBR-1-1
BK723,5 mm40 mm12,7 mm14PBR-2-1
UVFS11 mm20 mm6,4 mm14PBR-1-2
UVFS15 mm26 mm15 mm14PBR-3-2
UVFS23,5 mm40 mm12,7 mm14PBR-2-2
  Standard Specifications
MaterialBK7, UVFS
Dimension Tolerances±0.2 mm
Surface Quality20-10 scratch & dig
Flatnessλ/10 @ 633 nm
Anglesα= 79.5° ± 0.5°, β= 60° ± 1°
Design wavelength546.1 nm
Clear Aperture>80%