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
  • Drawing
  • 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 at 90° internal or external beam bending, 180° beam folding, image rotation. These applications are based on the total internal reflection at the glass-air boundary inside the prism, except 90° external beam bending, which requires a metallic or highly reflective dielectric thin film to be applied onto the hypotenuse face. Antireflective coatings have to be applied in order to optimize the optical transmission for a particular application. 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/-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
Dimensions A= B= C Material Grade SKU PRICE QUANTITY
10 mm
UVFS
Advanced
6567
93 €
20 mm
UVFS
Regular
6568
59 €
20 mm
UVFS
Advanced
6569
116 €
5 mm
BK7
Regular
6570
18 €
10 mm
BK7
Regular
6571
20 €
10 mm
BK7
Advanced
6572
42 €
20 mm
BK7
Regular
6573
31 €
20 mm
BK7
Advanced
6574
57 €
10 mm
UVFS
Regular
6575
49 €
5 mm
UVFS
Regular
6576
45 €