periscope

(redirected from Vision block)
Also found in: Thesaurus, Medical, Encyclopedia.
click for a larger image
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′)
n.
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.

periscope

(ˈpɛrɪˌskəʊp)
n
any of a number of optical instruments that enable the user to view objects that are not in the direct line of vision, such as one in a submarine for looking above the surface of the water. They have a system of mirrors or prisms to reflect the light and often contain focusing lenses
[C19: from Greek periskopein to look around; see peri-, -scope]

per•i•scope

art at periosteum
(ˈpɛr əˌskoʊp)

n.
an optical instrument for viewing objects in an obstructed field of vision, consisting of a tube with an arrangement of prisms or mirrors and, usu., lenses: used esp. in submarines.
[1815–25; back formation from periscopic]
click for a larger image
periscope
Light enters the top lens of the periscope, reflects off a mirror set at a 45° angle, travels down the periscope tube, and reflects off a second mirror, also set at a 45° angle. The 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′)
An instrument that has angled mirrors or prisms and allows objects not in the direct line of sight to be seen.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.periscope - an optical instrument that provides a view of an otherwise obstructed fieldperiscope - an optical instrument that provides a view of an otherwise obstructed field
optical instrument - an instrument designed to aid vision
pigboat, submarine, U-boat, sub - a submersible warship usually armed with torpedoes
Translations
بيرسكوب: مِنْظار الغَوّاصات والخَنادِق
periskop
periskop
periszkóp
sjónpípa, hringsjá
periskopas
periskops
periskop

periscope

[ˈperɪskəʊp] Nperiscopio m

periscope

[ˈpɛrɪskəʊp] npériscope m

periscope

nPeriskop nt

periscope

[ˈpɛrɪˌskəʊp] nperiscopio

periscope

(ˈperiskəup) noun
a tube containing mirrors, through which a person can look in order to see things which cannot be seen from the position the person is in, especially one used in submarines when under water to allow a person to see what is happening on the surface of the sea.
References in periodicals archive ?
Since the employer's focus is primarily on medical, persistency on the dental and vision block of business is "carrier favorable.
Each package of sheets, made up of four removable layers and a base layer, mount onto the windshield or vision block to ward off damage from small rocks and flying debris.
Henckels, says the company developed the Vision Block, "to do something that's more fashionable and stylish.

Full browser ?