Prism

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Prisms are blocks of optical material with flat polished sides arranged at precisely controlled angles to each other, which deflect, deviate and rotate light beams as well as disperse the wavelength. THATSHIGH provides diverse high precision prisms for different applications.

Prisms	Material	Illustration	Property & Application
Beam Splitter Penta Prism	BK7		By adding a wedge and with partial refractive coating on surfaces S1, Penta prism can be used as a beamsplitter.
Right Angle Prisms	BK7 Fused Silica		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.
Dispersion Prism	BK7 Fused Silica SF-14		A commonly used optical component for dispersing the spectrum.
Dove Prism	BK7		Dove prism has two applications. Being used as a rotator, it can rotate an image but without deviating the beam. 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, in this application,the prism must be used with parallel or collimated beam and the large square reflective surface should be kept very clean. This prism has other application of being used as a retroreflector, in which it performs as a right-angle prism.
Wedge Prism	BK7 Fused Silica		Wedge prisms have similar function with optical windows. They all can be used as isolating components. Wedges may be used to produce a small deviation, which don’t allow returning to the source.
Roof Prism	BK7		Roof prism is normally combined with a right angle prism and a totally internally reflecting roof, attaching by their largest square surfaces. It can invert and reverse an image, as well as deflect the image by 90° . Therefore, it is often used in terrestrial telescopes, viewing systems and rangefinders.

THATSHIGH Specifications for Standard Prism

Material	BK7 Grade A optical glass
Dimension Tolerance	+0mm, -0.2mm
Flatness	λ/6 @ 632.8nm
Surface Quality [S/D]	20/10
Clear Aperture	> 80% central area
Bevel	(0.1-0.5)mm×45°