Reflective prisms are used to reflect light, in order to flip, invert,
rotate, deviate or displace the light beam. One typical use is
to erect the image in binoculars or single-lens reflex cameras -
without the prisms the image would be upside down for the user.
Type of reflective prisms
The most common reflective prisms are:
- Porro prism
- Porro–Abbe prism
- Amici roof prism
- Penta prism and roof pentaprism
- Abbe-Koenig prism
- Schmidt-Pechan prism.
- Bauernfeind prism, half-penta prism or semi-penta prism. The Bauernfeind
prism is commonly used in microscope tubes and in geodesy to deviate
the path to the eyepiece in order make the device more ergonomic.
A Bauernfeind prism with 45° beam deviation is also known as a
half-penta prism or semipentaprism. A Bauernfeind prism is used together
with a Schmidt roof prism to form a Schmidt-Pechan prism.
- Dove prism
- Retroreflector prism
Some reflective prisms are used for splitting a beam into two or more beams:
- Beam splitter cube
- Dichroic prism & Trichroic prism - a prism that splits light
into two beams of differing wavelength (colour). They are usually
constructed of one or more glass prisms with dichroic optical coatings
that selectively reflect or transmit light depending on the light's
wavelength. That is, certain surfaces within the prism act as dichroic
filters. Trichroic prism are used as beam splitters in many optical
instruments, such as camcorders and high-quality digital cameras.
Refective Prism General Specifications:
1) Material: N-BK7, UV Fused Silica etc.
2) Size: 2 to 100mm
3) Dimension Tolerance: +/-0.1mm
4) Angle Tolerance: up to 1 arc second
5) Clear Aperature: 90%
6) Flatness: < 1/4 @633nm
7) Surface Quality: 60/40, 40/20
8) Coating: upon customer's request
Reflective Prism Inquiry Form
Notes:*OptoCity offers standard and custom made prism at very competitive price, please contact our professional sales staff for more information.