What does pentaprism mean?
Definitions for pentaprism
pen·taprism
This dictionary definitions page includes all the possible meanings, example usage and translations of the word pentaprism.
Wiktionary
pentaprismnoun
A five-sided prism used in the viewfinder of some single-lens reflex cameras
Wikidata
Pentaprism
A pentaprism is a five-sided reflecting prism used to deviate a beam of light by a constant 90°, even if the entry beam is not at 90° to the prism. The beam reflects inside the prism twice, allowing the transmission of an image through a right angle without inverting it as an ordinary right-angle prism or mirror would. The reflections inside the prism are not caused by total internal reflection, since the beams are incident at an angle less than the critical angle. Instead, the two faces are coated to provide mirror surfaces. The two opposite transmitting faces are often coated with an antireflection coating to reduce spurious reflections. The fifth face of the prism is not used optically but truncates what would otherwise be an awkward angle joining the two mirrored faces.
Numerology
Chaldean Numerology
The numerical value of pentaprism in Chaldean Numerology is: 5
Pythagorean Numerology
The numerical value of pentaprism in Pythagorean Numerology is: 5
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"pentaprism." Definitions.net. STANDS4 LLC, 2024. Web. 25 Apr. 2024. <https://www.definitions.net/definition/pentaprism>.
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