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Right Angle Prisms
    Publish time 2020-07-28 21:53    
Right Angle Prisms
Right Angle Prisms are the most used prisms. They are used to turn or deflect a beam through 90B or 180B. They are widely applied in place of mirrors involving severe acoustic or inertial loads, because it is easier to mount and deforms much less than a mirror in response to external mechanical stress.
 
Right-Angle Glass Prisms:
These prisms are made of glass of good quality. They have fine ground triangular faces and slightly beveled edges. They can serve as an efficient broadband reflector. If the hypotenuse face is antireflection coated, reflective efficiency is very high and is insensitive to orientation about axes normal to the plane of the page.

Specifications

Material

BK7 glass

Dimensions

±0.1mm

Angle Tolerance

≦3 arc min

Flatness

≦λ


Right-Angle Fused Silica Prisms:
They are made from UV grade synthetic fused silica. They combine the mounting and acoustic isolation advantage of a prism with the excellent transmission of this material. Because the index of synthetic fused silica is somewhat lower than that of BK 7, the critical angle for TIR is greater (thereby reducing the TIR field acceptance)

Specifications

Material

UV grade fused silica

Wavelength Range

200-2500nm

Dimension

3mm-80mm

Dimension Tolerance

±0.05mm

Angle Tolerance

≦3 arc min

Surface Quality

10/5

Flatness

λ/10@632.8nm per any 25.4mm