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GB423464A - Improvements in light reflectors - Google Patents

Improvements in light reflectors

Info

Publication number
GB423464A
GB423464A GB75/34A GB7534A GB423464A GB 423464 A GB423464 A GB 423464A GB 75/34 A GB75/34 A GB 75/34A GB 7534 A GB7534 A GB 7534A GB 423464 A GB423464 A GB 423464A
Authority
GB
United Kingdom
Prior art keywords
faces
plane
reflecting surface
elements
reflector
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
GB75/34A
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 GB423464A publication Critical patent/GB423464A/en
Expired 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
    • G02B5/122—Reflex reflectors cube corner, trihedral or triple reflector type
    • G02B5/124—Reflex reflectors cube corner, trihedral or triple reflector type plural reflecting elements forming part of a unitary plate or sheet

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Aerials With Secondary Devices (AREA)

Abstract

423,464. Reflectors. LERAY, G., 2<bis>, Rue du Capitaine Ferber, Paris. Jan. 1, 1934, Nos. 75 and 76. Convention dates, Dec. 31, 1932 and March 28, 1933. [Class 97 (i)] A reflex reflector is made up of a number of elements each consisting of a plane surface receiving the incident light, a reflecting surface, opposite the said plane, consisting of three plane faces mutually at right-angles to each other, and four lateral plane faces between the base and the reflecting surface, these faces being at rightangles to the base and each face being at rightangles to the two adjacent faces. The element may be modified by replacing two of the said plane lateral faces by portions of coaxial cylinders and the other two by plane faces intersecting on the axis of the cylinders. Moreover, one of the three faces comprising the reflecting surface may be of convex, e.g. conical, form. Figs. 1 and 2 show such a modified element in which the surfaces D, F are cylindrical and the surfaces P, Q intersect on the axis Z of the cylinder. The faces AC, AB, of the reflecting surface are plane and the surface BC is conical. A number of such elements can be united to form a reflector in which the reflecting surface is continuous, e.g. an annular reflector as in Fig. 3. The assembly of elements with its support may be moulded in one piece from transparent material. The element may be made hollow, the reflecting faces then consisting of mirrors.
GB75/34A 1932-12-31 1934-01-01 Improvements in light reflectors Expired GB423464A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR423464X 1932-12-31

Publications (1)

Publication Number Publication Date
GB423464A true GB423464A (en) 1935-02-01

Family

ID=8898707

Family Applications (1)

Application Number Title Priority Date Filing Date
GB75/34A Expired GB423464A (en) 1932-12-31 1934-01-01 Improvements in light reflectors

Country Status (1)

Country Link
GB (1) GB423464A (en)

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5557836A (en) * 1993-10-20 1996-09-24 Minnesota Mining And Manufacturing Company Method of manufacturing a cube corner article
US5564870A (en) * 1993-10-20 1996-10-15 Minnesota Mining And Manufacturing Company Method of manufacturing an asymmetric cube corner article
US5585164A (en) * 1993-10-20 1996-12-17 Minnesota Mining And Manufacturing Company Dual groove set retroreflective cube corner article and method of manufacture
US5600484A (en) * 1993-10-20 1997-02-04 Minnesota Mining And Manufacturing Company Machining techniques for retroreflective cube corner article and method of manufacture
US5696627A (en) * 1993-10-20 1997-12-09 Minnesota Mining And Manufacturing Company Directly machined raised structure retroreflective cube corner article and method of manufacture
US5734501A (en) * 1996-11-01 1998-03-31 Minnesota Mining And Manufacturing Company Highly canted retroreflective cube corner article
US5759468A (en) * 1993-10-20 1998-06-02 Minnesota Mining And Manufacturing Company Raised zone retroreflective cube corner article and method of manufacture
US5764413A (en) * 1995-06-09 1998-06-09 Minnesota Mining And Manufacturing Company Tiled retroreflective sheeting
US5889615A (en) * 1997-06-27 1999-03-30 Minnesota Mining And Manufacturing Company Dual axis retroreflective articles
US6015214A (en) * 1996-05-30 2000-01-18 Stimsonite Corporation Retroreflective articles having microcubes, and tools and methods for forming microcubes
US6021559A (en) * 1996-11-01 2000-02-08 3M Innovative Properties Company Methods of making a cube corner article master mold
US6045230A (en) * 1998-02-05 2000-04-04 3M Innovative Properties Company Modulating retroreflective article
US6055108A (en) * 1999-02-11 2000-04-25 Minnesota Mining And Manufacturing Company Imaging articles and methods using dual-axis retroreflective elements
US6282026B1 (en) 1998-02-05 2001-08-28 3M Innovative Properties Company Retroreflectors having two optical surfaces and varying retroreflectivity
US7384161B2 (en) 1999-04-07 2008-06-10 3M Innovative Properties Company Structured surface articles containing geometric structures with compound faces and methods for making same
US8394485B2 (en) 2000-02-25 2013-03-12 3M Innovative Properties Company Compound mold and structured surface articles containing geometric structures with compound faces and method of making same

Cited By (39)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5959774A (en) * 1993-10-20 1999-09-28 3M Innovative Properties Company Raised structure retroreflective article
US5564870A (en) * 1993-10-20 1996-10-15 Minnesota Mining And Manufacturing Company Method of manufacturing an asymmetric cube corner article
US5585164A (en) * 1993-10-20 1996-12-17 Minnesota Mining And Manufacturing Company Dual groove set retroreflective cube corner article and method of manufacture
US5600484A (en) * 1993-10-20 1997-02-04 Minnesota Mining And Manufacturing Company Machining techniques for retroreflective cube corner article and method of manufacture
US5696627A (en) * 1993-10-20 1997-12-09 Minnesota Mining And Manufacturing Company Directly machined raised structure retroreflective cube corner article and method of manufacture
US5721640A (en) * 1993-10-20 1998-02-24 Minnesota Mining And Manufacturing Company Multiple structure cube corner article and method of manufacture
US6413615B2 (en) 1993-10-20 2002-07-02 3M Innovative Properties Company Cube corner geometric structures in a substrate formed by both replicating and machining processes
US5759468A (en) * 1993-10-20 1998-06-02 Minnesota Mining And Manufacturing Company Raised zone retroreflective cube corner article and method of manufacture
US6277470B1 (en) 1993-10-20 2001-08-21 3M Innovative Properties Company Method of forming cube corner geometric structures in a substrate using both replicating and machining processes
US5557836A (en) * 1993-10-20 1996-09-24 Minnesota Mining And Manufacturing Company Method of manufacturing a cube corner article
US6168275B1 (en) 1993-10-20 2001-01-02 3M Innovative Properties Company Retroreflective cube corner article
US5831767A (en) * 1993-10-20 1998-11-03 Minnesota Mining And Manufacturing Company Asymmetric cube corner article
US6136416A (en) * 1993-10-20 2000-10-24 3M Innovative Properties Company Raised zone retroreflective cube corner article
US5914813A (en) * 1993-10-20 1999-06-22 3M Innovative Properties Company Multiple structure cube corner article
US5914812A (en) * 1993-10-20 1999-06-22 Minnesota Mining And Manufacturing Company Directly machined raised structure retroreflective cube corner article and method of manufacture
US6080340A (en) * 1993-10-20 2000-06-27 3M Innovative Properties Company Machining techniques for retroreflective cube corner article and method of manufacture
US5946134A (en) * 1993-10-20 1999-08-31 Minnesota Mining & Manufacturing Company Raised structure retroreflective article
US5812315A (en) * 1995-06-09 1998-09-22 Minnesota Mining And Manufacturing Company Cube corner articles exhibiting improved entrance angularity in one or more planes
US5926314A (en) * 1995-06-09 1999-07-20 Minnesota Mining And Manufacturing Company Retroreflective cube corner article having scalene base triangles
US5822121A (en) * 1995-06-09 1998-10-13 Minnesota Mining And Manufacturing Company Retroreflective cube corner article having scalene base triangles
US5764413A (en) * 1995-06-09 1998-06-09 Minnesota Mining And Manufacturing Company Tiled retroreflective sheeting
US6767102B1 (en) 1996-05-30 2004-07-27 Avery Dennison Corporation Retroreflective articles having microcubes, and tools and methods for forming microcubes
EP2246182A2 (en) 1996-05-30 2010-11-03 Avery Dennison Corporation Retroreflective articles having microcubes, and tools and methods for forming microcubes
USRE40700E1 (en) 1996-05-30 2009-04-14 Avery Dennison Corporation Retroreflective articles having microcubes, and tools and methods for forming microcubes
US6015214A (en) * 1996-05-30 2000-01-18 Stimsonite Corporation Retroreflective articles having microcubes, and tools and methods for forming microcubes
USRE40455E1 (en) 1996-05-30 2008-08-12 Avery Dennison Corporation Retroreflective articles having microcubes, and tools and methods for forming microcubes
US6021559A (en) * 1996-11-01 2000-02-08 3M Innovative Properties Company Methods of making a cube corner article master mold
US5734501A (en) * 1996-11-01 1998-03-31 Minnesota Mining And Manufacturing Company Highly canted retroreflective cube corner article
US5889615A (en) * 1997-06-27 1999-03-30 Minnesota Mining And Manufacturing Company Dual axis retroreflective articles
US6282026B1 (en) 1998-02-05 2001-08-28 3M Innovative Properties Company Retroreflectors having two optical surfaces and varying retroreflectivity
US6045230A (en) * 1998-02-05 2000-04-04 3M Innovative Properties Company Modulating retroreflective article
US6055108A (en) * 1999-02-11 2000-04-25 Minnesota Mining And Manufacturing Company Imaging articles and methods using dual-axis retroreflective elements
US7384161B2 (en) 1999-04-07 2008-06-10 3M Innovative Properties Company Structured surface articles containing geometric structures with compound faces and methods for making same
US7562991B2 (en) 1999-04-07 2009-07-21 3M Innovative Properties Company Structured surface articles containing geometric structures with compound faces and methods for making same
US7712904B2 (en) 1999-04-07 2010-05-11 3M Innovative Properties Company Structured surface articles containing geometric structures with compound faces and methods for making same
US8485672B2 (en) 1999-04-07 2013-07-16 3M Innovative Properties Company Structured surface articles containing geometric structures with compound faces and methods for making same
US8394485B2 (en) 2000-02-25 2013-03-12 3M Innovative Properties Company Compound mold and structured surface articles containing geometric structures with compound faces and method of making same
US8728610B2 (en) 2000-02-25 2014-05-20 3M Innovative Properties Company Compound mold and structured surface articles containing geometric structures with compound faces and method of making same
US8852722B2 (en) 2000-02-25 2014-10-07 3M Innovative Properties Company Compound mold and structured surface articles containing geometric structures with compound faces and method of making same

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