Large Prism for Periscope

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.

Large dimensions prisms commonly utilized for periscope used on tanks, submarines special carriers…

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.

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.