GB662938A - Convex mirror - Google Patents

Convex mirror

Info

Publication number
GB662938A
GB662938A GB1892/49A GB189249A GB662938A GB 662938 A GB662938 A GB 662938A GB 1892/49 A GB1892/49 A GB 1892/49A GB 189249 A GB189249 A GB 189249A GB 662938 A GB662938 A GB 662938A
Authority
GB
United Kingdom
Prior art keywords
mirror
jan
curvature
centre
radius
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
GB1892/49A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB662938A publication Critical patent/GB662938A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R1/00—Optical viewing arrangements; Real-time viewing arrangements for drivers or passengers using optical image capturing systems, e.g. cameras or video systems specially adapted for use in or on vehicles
    • B60R1/006—Side-view mirrors, e.g. V-shaped mirrors located at the front or rear part of the vehicle

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Mechanical Engineering (AREA)
  • Optical Elements Other Than Lenses (AREA)
  • Road Signs Or Road Markings (AREA)

Abstract

662,938. Road-trade mirrors. ODELBERG, J. A. Jan. 24, 1949. [Jan. 28, 1948] No. 1892/49. Drawings to Specification. Class 52 (iv). [Also in Groups XX and XXXII] A metal mirror for road-junctions has a toroidal convex reflecting surface. Preferably, the angle r between the normal to the centre of the mirror and the line of sight from the centre of the mirror to the eye of the observer is such that cos<SP>2</SP>r=b/a, where a is the radius of a curvature of the mirror in the plane containing said lines and b is the radius. of curvature in a plane perpendicular to said first mentioned plane and containing said normal.
GB1892/49A 1948-01-28 1949-01-24 Convex mirror Expired GB662938A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE662938X 1948-01-28

Publications (1)

Publication Number Publication Date
GB662938A true GB662938A (en) 1951-12-12

Family

ID=20314390

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1892/49A Expired GB662938A (en) 1948-01-28 1949-01-24 Convex mirror

Country Status (1)

Country Link
GB (1) GB662938A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3001448A (en) * 1958-07-24 1961-09-26 Pierce B Day Toric surface for the astigmatic correction of a shallow dome and prism combination

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3001448A (en) * 1958-07-24 1961-09-26 Pierce B Day Toric surface for the astigmatic correction of a shallow dome and prism combination

Similar Documents

Publication Publication Date Title
GB1412954A (en) Catoptric lens arrangement
GB1264409A (en)
GB662938A (en) Convex mirror
GB562241A (en) Optical sighting or viewing devices
GB606065A (en) Improvements in stereoscopic viewing devices
GB1067731A (en) Improvements in or relating to projection systems
GB619360A (en) Improvements in or relating to semi-transparent reflectors
GB209609A (en) Improvements in viewing devices for spirit levels
GB773881A (en) Improvements in or relating to optical reflectors
GB491707A (en) Improvements in reflecting systems having two plane reflecting surfaces
GB1433782A (en) Contact lens
GB252526A (en) Improvements in or relating to looking-glasses and mirrors
GB610270A (en) Improvements in or relating to correcting plates for optical systems
GB750663A (en) Improvements in or relating to objectives of the cassegrainian type
GB191101038A (en) A Night Marching Compass.
GB950765A (en) Improvements relating to optical apparatus for measuring small movements of a body
GB768742A (en) Prism binocular with carrying strap
GB532575A (en) Improvements in or connected with gun sights
GB334575A (en) Improvements in mirrors, looking glasses and the like
AU138812B2 (en) Improvements in or relating to optical systems comprising a concave spherical mirror anda correcting element
GB309794A (en) Improvements in systems of reversing prisms
CA448536A (en) Optical system for telescopes and binoculars
GB719709A (en) Improvements in night driving spectacle lenses
GB884162A (en) Improved periscope
GB502696A (en) Improvements in stationary mirror rings for television scanning devices