GB773881A - Improvements in or relating to optical reflectors - Google Patents

Improvements in or relating to optical reflectors

Info

Publication number
GB773881A
GB773881A GB3487353A GB3487353A GB773881A GB 773881 A GB773881 A GB 773881A GB 3487353 A GB3487353 A GB 3487353A GB 3487353 A GB3487353 A GB 3487353A GB 773881 A GB773881 A GB 773881A
Authority
GB
United Kingdom
Prior art keywords
reflecting
reflecting surface
domed
light
dec
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.)
Expired
Application number
GB3487353A
Inventor
Edward Charles Ferguson
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.)
WILLIAM GUYATT WARD
Original Assignee
WILLIAM GUYATT WARD
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 WILLIAM GUYATT WARD filed Critical WILLIAM GUYATT WARD
Priority to GB3487353A priority Critical patent/GB773881A/en
Publication of GB773881A publication Critical patent/GB773881A/en
Expired legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00Optical elements other than lenses
    • G02B5/12Reflex reflectors
    • G02B5/126Reflex reflectors including curved refracting surface

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Elements Other Than Lenses (AREA)
  • Lenses (AREA)

Abstract

773,881. Reflex reflectors. WARD, W. G. Dec. 14, 1954 [Dec. 15, 1953; July 14, 1954], No. 34873/53, No. 20613/54. Class 97(1) A reflector comprises a domed part, an annular reflecting surface coaxial therewith, and a second reflecting surface, light incident on the domed surface generally at right angles to the axis being reflected by the annular reflecting surface on to the second reflecting surface on which it is incident normally so as to be reflected back along its original path. As shown the domed surface a which may be spherical or ellipsoidal is coaxial with an annular reflecting surface b, which may be composed of two conical surfaces, which reflects the light to the incident normally on the second surface, which may be curved or plane. The surface c at the base of the reflector may be curved and may be clear or semi-reflecting to allow light from a source adjacent the base to pass 'therethrough. In a modification the surface e is perpendicular to the axis and carried reflecting tetrahedra.
GB3487353A 1953-12-15 1953-12-15 Improvements in or relating to optical reflectors Expired GB773881A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3487353A GB773881A (en) 1953-12-15 1953-12-15 Improvements in or relating to optical reflectors

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3487353A GB773881A (en) 1953-12-15 1953-12-15 Improvements in or relating to optical reflectors

Publications (1)

Publication Number Publication Date
GB773881A true GB773881A (en) 1957-05-01

Family

ID=10370980

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3487353A Expired GB773881A (en) 1953-12-15 1953-12-15 Improvements in or relating to optical reflectors

Country Status (1)

Country Link
GB (1) GB773881A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1099403B (en) * 1958-08-02 1961-02-09 Telefonbau & Normalzeit Gmbh Process for the production of mimic diagrams
US3981557A (en) * 1973-08-29 1976-09-21 Ludwig Eigenmann Light retroreflective system for sign surfaces
GB2207526A (en) * 1987-07-27 1989-02-01 Itw New Zealand Ltd Retro-reflector system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1099403B (en) * 1958-08-02 1961-02-09 Telefonbau & Normalzeit Gmbh Process for the production of mimic diagrams
US3981557A (en) * 1973-08-29 1976-09-21 Ludwig Eigenmann Light retroreflective system for sign surfaces
GB2207526A (en) * 1987-07-27 1989-02-01 Itw New Zealand Ltd Retro-reflector system

Similar Documents

Publication Publication Date Title
GB1336801A (en) Catoptric anastigmatic telescopic optical system
GB1412954A (en) Catoptric lens arrangement
GB1321303A (en) Optical systems
JPS5238939A (en) Optical coupler
GB1196373A (en) Optical Scanning System
GB773881A (en) Improvements in or relating to optical reflectors
GB763376A (en) Improvements relating to vehicle lamps
JPS51148440A (en) Microscopic reflecting oriective-lens
GB1269799A (en) Skiascope
GB825638A (en) Improvements relating to lighting apparatus
GB1067731A (en) Improvements in or relating to projection systems
GB804929A (en) Improvements in or relating to glass reflecting lenses more particularly intended to be embedded in the ground
ES363974A1 (en) Flare control shield for an overhead projector
FR2346734A1 (en) Terrestrial telescope with image erecting device - comprises two aspherical concave mirrors and converging refractive system
GB571567A (en) Improvements relating to optical condenser systems
GB649370A (en) Improvements relating to reflectors for optical systems for the production of a beamof light
GB836055A (en) Improvements in or relating to electric lighting fittings incorporating spotlight reflectors
GB693922A (en) Improvements in and relating to reflector devices
JPS6468710A (en) Compound optical system device
GB885071A (en) Improvements in and relating to the illumination of extended areas
JPS57104867A (en) Electromagnetic oscillograph
GB759227A (en) Photographic lighting equipment
GB569118A (en) Improvements in or relating to optical apparatus
GB794690A (en) Interferometer
GB1003886A (en) Optical systems