Optical K9 Quartz Glass Triangular Prism for Student Teaching and Photography

Prism is an optical prism that can be used to rotate, retroflect, or invert an image. It is shaped like a triangular right-angle prism with the top cut off, or truncated.These prisms work best with collimated light. The length of these prisms (approximately four times the height) means they will introduce substantial astigmatism when they are used with converging light.If light enters through a sloped face and is propagated along the longitudinal axis of the prism it reflects once from the bottom face and emerges from the other short side, resulting in an inverted image. There is one interesting and unique feature of dove prisms: If you rotate the prism around the longitudinal axis the image will rotate at twice the speed. Rotate the prism 30 degrees, and your image will rotate by 60.

DETAILED DESCRIPTION

Picture show of periscope prism:

（Picture show of 40*40*40mm Right Angle Periscope Prism)

HOW DOES THE PERISCOPE PRISM WORK?

A periscope is an optical instrument that uses a system of prisms, lenses or mirrors to reflect images through a tube. Light from a distant object strikes the top mirror and is then reflected at an angle of 90 degrees down the periscope tube. At the bottom of the periscope, the light strikes another mirror and is then reflected into the viewer’s eye. This simple periscope uses only flat mirrors as compared to the periscopes used on submarines, which are usually a complex optical system using both lenses and mirrors.

(picture show of periscope)

WHY IS PRISM A BETTER MATERIAL TO MAKE A PERISCOPE THAN A PLANE MIRROR?

Prisms make use of “total internal reflection” (TIR), an advantage over the losses you’d expect from mirrors. Mirrors only reflect about 95% of that reflected by prisms using appropriate TIR angles. Prisms also avoid the refraction distortion that can result when using a glass fronted, reflective coated mirror.

RAY PATH OF RIGHT ANGLE PRISM

SPECIFICATIONS OF PERISCOPE PRISM

• Material: N-BK7
• Surface quality: 60-40 or better
• Dimension tolerance:+/-0.1mm or better

We has lots of experience in producing and exporting of the optical prism, with more than 10 years’ experience, we have made a wide range of optical prism with variety of materials, shapes, design, etc. Welcome to contact us to get the periscope prism you need.