Optical Prism Manufacturing

  • From design and prototype to mass production
  • Various prism shapes available
  • Common glass types available with various standard and custom coatings


Apexel Optics has many types of prisms, each with a specific geometry to achieve the necessary reflections to perform a specific imaging task. Reflecting prisms can reverse, rotate, deflect or shift the beam. Dispersive prisms produce spectral separation for in-line spectral ordering or tuning of laser output.

Our extensive collection of optical prisms includes various shapes and configurations, such as right-angle, dispersing, roof, dove, retro-reflecting, penta, and wedge prisms as well as hexagonal light mixing rods.Our micro pentaprisms and right angle prisms are widely used in optical communications, such as optical switches. Other prisms such as Dove and Roof prisms are also available on request. Contact us for more relevant parameters.


Apexel Optics produces over 500,000 optical prisms per year. Our expertise includes achieving precision quality in a wide variety of Schott, Ohara, and CDGM materials, along with utilizing optical contacting to achieve high precision angle tolerances.

AttributesSpecification parameters
MaterialsConventional glass materials (Schott, Ohara, Hoya, CDGM) Fused silica
Sizeup to 150mm
Angle tolerance±1 second
Shape ErrorLambda/40
Ultra-smooth processing<0.5nm
Bonded Prism Assembly Beam Deviation5-0.5 arcmin

Introduction to Optical Prisms

Learn the basics of and become familar with Optical Prisms.

Selecting the Right Optical Prisms

Apexel Optics has the expertise to provide off-the-shelf and custom optical prisms. We can provide high precision prisms with any angle and angle tolerance of 1 second.

Right-Angle Prisms

Also Known as Half-Cube Prisms or Isosceles Prisms In addition to standard right angle prisms made of N-BK7 or fused silica,
Apexel Optics also offers custom right angle prisms:
*Optical glass and crystal such as H-ZF1, H-ZF13, N-SF11, heat-resistant glass, sapphire can be selected
*Optional size 1.0×1.0x1.0mm to 300.0×300.0x300.0mm; *Available with 3′, 1′, 30″, 10″, 5″, and even 3″, 1″, 0.5″ angle tolerance;
*AR, HR, PR coating available.

Apexel Optics Right Angle Prisms

Penta Prisms

The pentagonal prism can be offset from the incident beam without inversion or inverted to 90 degrees. A deflection angle of 90 degrees is independent of any rotation of the prism about an axis parallel to the line where the two reflecting surfaces intersect.
It is widely used in plumb line, measurement, alignment, ranging and optical processing. The reflective surfaces of such prisms must be coated with a metal or dielectric film.
Standard pentagonal prism reflective surfaces are coated with aluminum or reinforced aluminum.
Apexel Optics Penta Prisms

Beam splitting pentaprism

Pentaprisms can be used as beam splitters by adding wedges and partially reflective coatings to the first reflective surface. We offer beamsplitter pentaprisms with standard transmission/reflection (T/R) ratios of 20/80, 50/50. Other T/R ratios are also available on request.
Apexel Optics Beam Splitting Pentaprism

Roof Prism

The roof prism is to replace one reflecting surface of the ordinary relay prism with the roof surface with a mutual angle of 90°. It is suitable for optical applications where both beam steering and erection are required.
Corner prisms are also known as retroreflective or three-sided prisms. In a corner cube, the three reflecting surfaces are perpendicular to each other, like the side walls of a cube.
The input surface is perpendicular to the cube diagonal. Ignoring the angle of incidence, the output beam is parallel to the input beam, but in the opposite direction. For better matching, the insertion corners of several corner prisms are usually hexagonal.
In the case of such a prism, total internal reflection occurs, so (probably) it is not necessary to have a mirror coating on the reflective surface. Typically, the reflective surface is an aluminum reflective film, which is then covered with copper and black paint.

Image Rotation

Image Rotation are also known as pigeon prisms. Prisms rotate the image without changing the direction of the input beam, which is parallel to the hypotenuse. Rotation of the prism relative to the subject causes a double rotation of the image. Dove prisms should be used in parallel beams.
  • Used to Maintain Correct Visual Orientation
  • Include Amici, Dove, Half-Penta, and Schmidt
  • Ideal in Spotting Scopes and Optical Instruments to Take an Inverted Image from an Objective

Specialty Prisms

  • Designed for a Variety of Imaging and Laser Systems
  • Include Rod Lens, Cone Mirrors, Anamorphic Pairs, Rhomboid, and Wedge


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