RIGHT ANGLE PRISMS
Right angle prism is the most widely used prisms. It utilizes the inherent total internal reflection (TIR) at the hypotenuse to invert the image and achieve a 90° change in direction. This produces a left handed image and depending on the orientation of the prism, the image may be inverted or reverted. Right angle prisms can also be used in combination for image/beam displacement. It is typically coated on the hypotenuse with Al /Ag/Au to enhance reflectivity, while the input and output faces are coated with MgF2 (a common AR coat). 3mm/5mm/10mm/12.7mm/20mm/25.4mm/30mm - could be supplied.
Our suggestion for your choice:
a) Right-Angle Prism with AR Coating on the hypotenuse if you wish to use your prism as a retroreflector and you want to reduce surface reflections over the specified wavelength range of the coating.
b) Right-Angle Prism with appropriate AR Coating on the legs if you wish to use your prism as a 90 degree reflector and you want to reduce surface reflections over the specified wavelength range of the coating.
Specifications:
Material: H-K9L,Fused Silica
Dimension Tolerance: ±0.1mm
Angle Tolerance: <3'
Surface Accuracy: λ/10@632.8nm
Surface Quality: 40/20
Clear Aperture: >90%
Bevel: < 0.2mm×45°
Coating: Custom Design
Our highly recommended Right Angle Prisms list:
H-K9L
UV Fused Silica
CaF2/BaF2
ZnSe/ZnS
Si/Ge