periscope

Light enters the top lens of a periscope, reflects off a mirror set at a 45 degree angle, travels down the periscope tube, and reflects off a second mirror, also set at a 45 degree angle. Light that reflects off the second mirror exits through the bottom lens and into the eye of the user.

per·i·scope

(pĕr′ĭ-skōp′)

Any of various tubular optical instruments that contain reflecting elements, such as mirrors and prisms, to permit observation from a position displaced from a direct line of sight.

per′i·scop′ic (-skŏp′ĭk), per′i·scop′i·cal (-ĭ-kəl) adj.

American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

periscopic

(ˌpɛrɪˈskɒpɪk)

adj

(of a lens) having a wide field of view

ˌperiˈscopically adv

Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

per•i•scop•ic

(ˌpɛr əˈskɒp ɪk)

adj.

1. (of certain lenses in special microscopes, cameras, etc.) giving distinct vision obliquely, or on all sides.

2. pertaining to periscopes or their use.

[1795–1805]

Translations

périscopique

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References in periodicals archive

EISA named HUAWEI P30 Pro's low-light photographic capabilities as being "by far the best you can currently get from a smartphone." It also praised the ultra-wide lens, portrait mode and the periscopic 5x telephoto lens saying that it "surpasses any of its competitors."

Huawei Wins Eisa's "Best Smartphone of the Year" Award for Second Year Running With the P30 Pro

The EISA called out the P30 Pro's low-light photographic capabilities as being "by far the best you can currently get from a smartphone." It also praised the ultra-wide lens, portrait mode and the periscopic 5x telephoto lens saying that it "surpasses any of its competitors."

Huawei wins EISA's 'best smartphone' award

The EISA called out the Huawei P30 Pro's low-light photographic capabilities as being "by far the best you can currently get from a smartphone." It also praised the ultra-wide lens, portrait mode and the periscopic 5x telephoto lens saying that it "surpasses any of its competitors." "We are honored to receive another award from EISA and pleased with the recognition of the P30 Pro.

Huawei Wins EISA's 'Best Smartphone of the Year' Award for second year running with P30 Pro

The system relies on the periscopic mirror which is placed first.

Oppo Reno 10x Zoom camera test and comparison: How far can you go?

The bishop, who spoke on the topic, 'Electoral Integrity, Legitimacy of democratic institutions and good governance,' took a periscopic view of Nigeria and countries around the world and declared that integrity is a complex mix in the emerging scenario.

Buhari Must Find Middle Way On Onnoghen - Kukah

The first is a centre near classic bifocal with 'periscopic function' where the centre add zone can be fabricated off-centre to overcome the decentering of a scleral lens.

Multifocal scleral lenses--a panacea for presbyopia? This article will review multifocal scleral lenses and how they can be used to provide an excellent visual solution and also benefit ocular surface disease

Recurring problems led to the army ending the purchase of W&S sights and permission was granted to brigade commanders to purchase other telescopic sights and a number of Winchester A5 scopes and Periscopic Prism Co.

Canada's aboriginal marksmen: the deadliest snipers of the western front

Echoing Felix Gonzalez-Torres's 1990 Untitled (Death by Gun), Periscopic's US Gun Killings: The Stolen Years, 2013, animates traumatic statistics by combining rapidly advancing counters with an increasingly dense network of arcing lines, each corresponding to one American killed by a firearm.

Inside information: Martha Buskirk on "Data Drift"