What is the Definition of a Prism?

Definition of optical prism

Prism is not unfamiliar in our lives. It is also used in the field of optics. Prism is also a piece of optical material with polished sides, so that the angle arrangement can be precisely controlled. Through the refraction of the prism, the light beam can be deflected, deviated and rotated, and the wavelength can be dispersed. In this article, we will briefly introduce several types of prisms and related parameter information.

Prism classification

1. Right-angle prism


2. Beam splitter cube

3. Polarizing beam splitter cube (PBS)


4. Non-polarizing beam splitter cube (NPBS)


5. X-cube prism


In Mok Optics, we also produce other types of prisms. If you have other requirements for your project, please send us the drawings and we can choose the right lens for you.

Applications of prisms

1. Optical devices (cameras, telescopes)
2. Laser systems
3. Spectroscopy
4. Optical communications
5. Applications in imaging systems, etc.

Related parameters

Size range: 3mm – 200mm
Size tolerance: ±0.02mm
Clear aperture: >90%
Surface quality: 60-40 to 10-5
Flatness: λ/10 @ 632.8nm
Deviation: ≤ 30 seconds
Coating options:
Anti-reflection (AR) coating
High reflection (HR) coating
Beam splitter coating
Non-polarizing beam splitter coating
Custom coating by design

FAQs in Optics Prisms

1. What are prisms made of?

Common materials include glass (such as BK7 or fused silica) and various plastics.

2. How do prisms scatter light?

Light is refracted at different angles depending on its wavelength, spreading it across the spectrum.

3. What is the purpose of prism coatings?

Coatings minimize reflections and increase transmission efficiency, which improves performance in optical applications.

4. Can prisms be customized?

Yes, prisms with specific dimensions, tolerances, and coatings can be designed and manufactured to customer specifications.

5. What is the significance of prism flatness?

Flatness affects the accuracy of light transmission and overall optical performance, so it is critical for precision applications.

If you have more specific questions or need more information, feel free to ask!