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Sales engineer
Arminas Butkus +370 5 219 4884
Right-angle prisms
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Right-angle prisms

Main features

 

  • Fabricated from high-quality UV grade fused silica, BK7
  • Rectangular faces are optically polished
  • Standard and advanced grade selection
  • Metallic and dielectric thin-film coatings, custom substrate material and dimensions are available upon request

 

Application examples

 

  • 90° internal or external mirror
  • Retroreflector
  • Components for cube beamsplitter
Request custom View stock
  • Description
  • Standard specifications

4Lasers standard uncoated right-angle (45°-90°-45°) design prisms are fabricated from UVFS and BK7 optical glasses and have three optically polished rectangular surfaces (refer to the drawing). These prisms are popular to use for 90° internal or external beam bending, 180° beam folding, image rotation. These applications exploit total internal reflection at glass-air boundary inside the prism, except 90° external beam bending, which requires metallic or highly reflective dielectric thin-film to be applied onto the hypotenuse face. To optimize particular internal application optical transsmision antireflective coatings have to be applied. Contact us for coating service, custom solutions and pricing.

Right-angle prisms
Substrate material BK7, UVFS
Wavelength range Uncoated BK7 prisms: 350 nm - 2 μm 
Uncoated UVFS prisms: 185 nm - 2,1 μm
Clear aperture ≥80% of face dimensions
Dimensions tolerance +0/-0,25 mm
90° angle tolerance Regular grade: ±2 arcmin 
Advanced grade: ±5 arcsec
Pyramidal tolerance Regular grade: ±1 arcmin 
Advanced grade: ±30 arcsec
Protective chamfers <0,25 mm at 45°
Surface quality 40-20 S-D
Surface flatness ≤λ/[email protected],8 nm
Coatings Uncoated, available upon request
Order your item
Material Grade AxB face dimensions SKU price quantity
UVFS
Advanced
10x10 mm
6567
93 €
UVFS
Regular
20x20 mm
6568
59 €
UVFS
Advanced
20x20 mm
6569
116 €
BK7
Regular
5x5 mm
6570
18 €
BK7
Regular
10x10 mm
6571
20 €
BK7
Advanced
10x10 mm
6572
42 €
BK7
Regular
20x20 mm
6573
31 €
BK7
Advanced
20x20 mm
6574
57 €
UVFS
Regular
10x10 mm
6575
49 €
UVFS
Regular
5x5 mm
6576
45 €