MOK Optical Manufacturer Optical Prism

Introduction of Optical Prism

In this article, we will introduce the main applications of several different prisms, if you are interested in these, you can contact us directly.

Penta Prism

Penta Prism has stable light deflection characteristics. No matter how the optical axis and light changes, its deflection angle is always 90 degrees. It is widely used in measurement, laser scanning, alignment and other optical tools.Main Applications:
Visual Aiming
Display System

Dove Prism

Dove prism is a reflecting prism used to flip the image. It consists of a truncated right-angle prism. When a beam of light enters the inclined surface of the prism, it undergoes total internal reflection within the longest (bottom) surface and then emerges from the opposite inclined surface. Since only one reflection occurs, the image passing through the prism is inverted, not flipped horizontally.
An interesting feature of the Dove prism is that when it is rotated along its longitudinal axis, the emitted image rotates at twice the speed of the prism. This means that it can rotate the beam to any angle, so it is very useful in beam rotators in fields such as interferometry, astronomy and pattern recognition.
Main applications:
Pattern recognition

Half-penta prism

The main function of the half-penta prism is to deflect the light by 45°, and the image is right-handed. It is mainly used in Pecan mirror components.
Main applications:
Pecan mirror components


There are two main types of microprisms: pentaprisms and right-angle prisms. These two types of prisms are widely used in the field of fiber-optic communications, especially in the core field of optical switches. For example, in applications such as circulators, interleavers and MEMS.
Main applications:
Fiber-optic communications
Circulators, interleavers

Right-angle prism

When used as a mirror, the right-angle prism can deflect the light by 90 degrees, or as a reflector, the light undergoes 180 degrees of total internal reflection. Right-angle prisms can also be used in applications such as splicing and beam shifting. In addition, one of the basic functions of right-angle prisms is to achieve efficient total internal reflection of incident light using the critical angle characteristics.
Main applications:
Light deflection
Beam shifting
Total reflection of light