Periscopes are optical devices that allow users to see objects or views that are not directly in their line of sight. They are commonly used on submarines to observe above-water surroundings without surfacing. Periscopes work by using mirrors to reflect light, enabling users to view images from a different angle.
A telescope lenses and prisms
We made some in class using mirors and a cardboard box. You have to cut two small holes on opposite sides of the box. Then on the opposite side position the mirrors on opposite sides of the box. (on the thinner side) then stick them in the right position and your done. To position mirrors: Make sure you can see out of the top from the the bottom mirror!
The principle behind a periscope is the reflection of light at two or more angles using mirrors to allow an observer to see objects that are not in their direct line of sight. The light enters one end of the periscope, reflects off the mirrors inside, and exits the other end, allowing the observer to see around obstacles or over barriers. This principle is based on the law of reflection, where the angle of incidence is equal to the angle of reflection.
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A periscope is an instrument for observation from a concealed position. In its simplest form it consists of a tube with mirrors at each end set parallel to each other at a 45-degree angle. This form of periscope, with the addition of two simple lenses, served for observation purposes in the trenches during World War I. Military personnel also use periscopes in some gun turrets and in armoured vehicles.Also known as berinscope.More complex periscopes, using prisms instead of mirrors, and providing magnification, operate on submarines. The overall design of the classical submarine periscope is very simple: two telescopes pointed into each other. If the two telescopes have different individual magnification, the difference between them causes an overall magnification or reduction.
Main products are Optical Windows, Mirrors, Prisms, Lenses, waveplates and Color Filters,
Periscopes are optical devices that allow users to see objects or views that are not directly in their line of sight. They are commonly used on submarines to observe above-water surroundings without surfacing. Periscopes work by using mirrors to reflect light, enabling users to view images from a different angle.
Periscopes typically use a combination of lenses, including prisms, to help redirect and magnify light entering the periscope. These lenses work together to ensure that the image transmitted through the periscope remains clear and focused for the viewer.
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.
the defects of mirrors are overcome if 45 degree right-angled glass prisms are used.the critical angel of ordinary glass is about 42 degree and a ray falling normally on face of such prism total internal reflection occurs and the ray is turned through 90 degree .examples:totally reflecting prisms replace mirrors in good periscopes,light can also be reflected through 180 degree by a prisms this happens in binoculars.
Using lenses to refract light rays in specific directions. Using mirrors to reflect light in desired angles. Using prisms to separate light into its different colors.
Convex and concave lenses, and prisms.
No. But small sections of lenses behave like prisms.
Ernest Edmund Maddox has written: 'The clinical use of prisms; and the decentering of lenses' -- subject(s): Lenses 'The clinical use of prisms' -- subject(s): Instrumentation, Optometry
James P. C. Southall has written: 'Mirrors, prisms and lenses' -- subject(s): Geometrical optics 'The principles and methods of geometrical optics' -- subject(s): Geometrical optics
An optical system consists of a succession of elements, which may include lenses, mirrors, light sources, detectors, projection screens, reflecting prisms, dispersing devices, filters and thin films, and fibre-optics bundles.