Wedge
Prism
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Optical wedge (Wedge Prism) is
a wedge shaped piece of glass which refracts light
rays, thus establishing a critical angle.
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Right-Angle
Prism
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Right angle prism is deviating
or deflecting a beam of light with 90° or 180°.It
is often used in telescope, periscope and other
optical system. Furthermore, Laser grade right angle
prism is also available by Simphoton. Please see
the following chapter laser optics
for more information.
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Dove
Prism
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Dove prism has two applications.
The main application is used as a rotator. It can
rotate an image but without deviating the beam.
And when the prism is rotated about the input parallel
ray through some angle, the image rotates through
twice that angle. It is very important that the
application must be used with parallel or collimated
beam and the large square reflective surface should
be kept very clean. Another application is used
as a retroreflector. For this application it perform
as a right-angle prism.
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Penta
Prism
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Penta prism can deviate an incident
beam without inverting or reversing to 90. The deviation
angle of 90 is independent of any rotation of the
prism about an axis parallel to the line of intersection
of the two reflecting faces. It is commonly used
in Plumb Level, Surveying, Alignment, Rangefinding
and Optical Tooling.
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Beamsplitter
Penta Prism
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By adding a wedge and with partial
reflective coating on surfaces S1, it can be used
as a beamsplitter. It is often used in Plumb Level,
Surveying, Alignment, Rangefinding and Optical Tooling.
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Roof
Prism (Amici Prism)
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Roof prism is combined with a
right angle prism and a totally internally reflecting
roof and they are attached by them largest square
surfaces. It can invert and reverse an image, also,
deflect the image 90° . Therefore, it is often
used in terrestrial telescopes, viewing systems
and rangefinders.
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Corner
Cube Retroreflectors
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It has three mutually perpendicular
surfaces and a hypotenuse face. Light entering through
the hypotenuse is reflected by each of the three
surfaces in turn and will emerge through the hypotenuse
face parallel to the entering beam regardless of
the orientation of the incident beam. For its special
performance, it is often used to the distance measurement,
optical signal process and laser interferometer.
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Anamorphic
Prism
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These two prisms can expand or
contract the beam in one direction without any changes
in the other direction. By adjusting the angles
among the incident beam and two prisms, the shape
of the beam can be changed. It is very easy to turn
elliptical beam into circular beam.
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