[go: up one dir, main page]
More Web Proxy on the site http://driver.im/

FR2313689A1 - Catadioptric device using planoconvex lens - reflects most incident light and transmits small amt. through lens - Google Patents

Catadioptric device using planoconvex lens - reflects most incident light and transmits small amt. through lens

Info

Publication number
FR2313689A1
FR2313689A1 FR7510227A FR7510227A FR2313689A1 FR 2313689 A1 FR2313689 A1 FR 2313689A1 FR 7510227 A FR7510227 A FR 7510227A FR 7510227 A FR7510227 A FR 7510227A FR 2313689 A1 FR2313689 A1 FR 2313689A1
Authority
FR
France
Prior art keywords
lens
incident light
reflects
mirror
objective
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
FR7510227A
Other languages
French (fr)
Other versions
FR2313689B1 (en
Inventor
Jean-Claude Reymond
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Thales SA
Original Assignee
Thomson CSF SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Thomson CSF SA filed Critical Thomson CSF SA
Priority to FR7510227A priority Critical patent/FR2313689A1/en
Publication of FR2313689A1 publication Critical patent/FR2313689A1/en
Application granted granted Critical
Publication of FR2313689B1 publication Critical patent/FR2313689B1/fr
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/12—Reflex reflectors
    • G02B5/126—Reflex reflectors including curved refracting surface

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Lenses (AREA)

Abstract

A catadioptric device has an optical objective which focuses the incident radiation on to a mirror from which almost all is returned through the objective in exactly the opposite direction as it arrived. The aperture of the optical field of reception may be adjusted and the mirror is semi-reflecting in order to transmit a fraction of the incident light. The device comprises a plano-convex lens (22) placed in the focal image plane (F1) of the objective (1). The plane face of the lens is reflecting and constitutes the mirror. A diaphragm (10) associated with the convex face of the lens controls the field aperture.
FR7510227A 1975-04-02 1975-04-02 Catadioptric device using planoconvex lens - reflects most incident light and transmits small amt. through lens Granted FR2313689A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7510227A FR2313689A1 (en) 1975-04-02 1975-04-02 Catadioptric device using planoconvex lens - reflects most incident light and transmits small amt. through lens

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7510227A FR2313689A1 (en) 1975-04-02 1975-04-02 Catadioptric device using planoconvex lens - reflects most incident light and transmits small amt. through lens

Publications (2)

Publication Number Publication Date
FR2313689A1 true FR2313689A1 (en) 1976-12-31
FR2313689B1 FR2313689B1 (en) 1977-11-18

Family

ID=9153404

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7510227A Granted FR2313689A1 (en) 1975-04-02 1975-04-02 Catadioptric device using planoconvex lens - reflects most incident light and transmits small amt. through lens

Country Status (1)

Country Link
FR (1) FR2313689A1 (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2036264A5 (en) * 1969-03-10 1970-12-24 Walter Transformateurs M

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2036264A5 (en) * 1969-03-10 1970-12-24 Walter Transformateurs M

Also Published As

Publication number Publication date
FR2313689B1 (en) 1977-11-18

Similar Documents

Publication Publication Date Title
EP0400830A3 (en) A laser
JPS5574503A (en) Mechanical photo switch
GB973675A (en) Improvements relating to centred optical systems
GB2006463A (en) Holographic one tube goggle
GB981228A (en) Focusing device for photographic camera lenses
GB2005044A (en) Improvements in or relating to optical systems
FR2297431A1 (en) Optical module for spectroscopic equipment - has block made of transparent or light transmitting plastic
FR2313689A1 (en) Catadioptric device using planoconvex lens - reflects most incident light and transmits small amt. through lens
JPS5461522A (en) Automatic focusing device
FR2465239B1 (en)
FR2380561A1 (en) Image intensifying weapon sights - has Cassegrain objective comprising two mirrors, dioptric elements and image tube
JPS5633572A (en) Optical rader device
FR2355305A1 (en) Objective suitable for infrared radiation - comprises concave mirror, reflecting IR via plane mirror to spherical three-lens correction system
JPS57154206A (en) Focusing device
GB1455029A (en) Apparatus for checking the line of sight of a telescope in relation to that of an infra-red goniometer
GB879527A (en) Improvements in or relating to television cameras incorporating lenses of variable focal length
SE7612231L (en) SEARCHER FOR MIRROR REFLECTOR CAMERA
JPS57196171A (en) Optical system for optical wave range finder
GB1318804A (en) Optical scanning devices
GB2010518A (en) Illumination System
GB923925A (en) Improvements relating to anamorphosing optical systems
GB934650A (en) Improvements in or relating to illuminating assemblies for cinematograph and slide projectors
JPS5546729A (en) Finder optical system
FR2322385A1 (en) Stabilised image night vision glasses - have Kepler lens system, light intensifier, two plane mirrors and gyroscope stabiliser
FR2363127A1 (en) Combined binocular telescope and camera - has camera objective mechanically coupled to focussing member of binocular unit

Legal Events

Date Code Title Description
ST Notification of lapse