GB270790A - Reflecting devices - Google Patents

Reflecting devices

Info

Publication number
GB270790A
GB270790A GB354426A GB354426A GB270790A GB 270790 A GB270790 A GB 270790A GB 354426 A GB354426 A GB 354426A GB 354426 A GB354426 A GB 354426A GB 270790 A GB270790 A GB 270790A
Authority
GB
United Kingdom
Prior art keywords
units
reflectors
pressed
reflecting surfaces
angle
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
GB354426A
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
Priority to GB354426A priority Critical patent/GB270790A/en
Publication of GB270790A publication Critical patent/GB270790A/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)
  • Joining Of Glass To Other Materials (AREA)

Abstract

270,790. Stimson, J. C. Feb. 8, 1926. Reflectors. - In reflectors comprising a number of contiguous, central triple reflector units, the angle between one or more pairs of the reflecting surfaces of each unit deviates from a right angle, and the surfaces are deformed throughout their area, so as to produce merging and slightlyspreading reflected beams of uniform intensity. The units may be moulded, the angles of the mould being only approximately accurate, and its surfaces being as plane as conveniently possible, and polished, but nevertheless possessing minute irregularities. The spread of the beam may be regulated by controlling the degree of polish and the shrinkage of the glass during the pressing operation. The units may be pressed from a single glass plate and have incident faces of equilateral triangular shape arranged contiguously. Alternatively, as shown, they may be pressed so as to have square reflecting surfaces, the corresponding surfaces of all the units being in the same or parallel planes.
GB354426A 1926-02-08 1926-02-08 Reflecting devices Expired GB270790A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB354426A GB270790A (en) 1926-02-08 1926-02-08 Reflecting devices

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB354426A GB270790A (en) 1926-02-08 1926-02-08 Reflecting devices

Publications (1)

Publication Number Publication Date
GB270790A true GB270790A (en) 1927-05-09

Family

ID=9760326

Family Applications (1)

Application Number Title Priority Date Filing Date
GB354426A Expired GB270790A (en) 1926-02-08 1926-02-08 Reflecting devices

Country Status (1)

Country Link
GB (1) GB270790A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE826539C (en) * 1939-07-17 1952-01-03 Fairylites Ltd Reflector and mold for its manufacture
FR2512559A1 (en) * 1981-09-10 1983-03-11 Pyreflex Corp Oscillating retroreflector for e.g. field surveying - has at least two planar reflecting facets which are oscillated to compensate for effects of dispersion
WO1998059266A1 (en) * 1997-06-25 1998-12-30 Reflexite Corporation Textured retroreflective prism structures and molds for forming same
EP1570301A1 (en) * 2002-12-12 2005-09-07 Avery Dennison Corporation Retroreflector with controlled divergence made by the method of localized substrate stress
US8371703B2 (en) 2008-10-22 2013-02-12 3M Innovative Properties Company Retroreflective sheeting

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE826539C (en) * 1939-07-17 1952-01-03 Fairylites Ltd Reflector and mold for its manufacture
FR2512559A1 (en) * 1981-09-10 1983-03-11 Pyreflex Corp Oscillating retroreflector for e.g. field surveying - has at least two planar reflecting facets which are oscillated to compensate for effects of dispersion
US6258443B1 (en) 1994-09-28 2001-07-10 Reflexite Corporation Textured retroreflective prism structures and molds for forming same
US6770225B2 (en) 1994-09-28 2004-08-03 Reflexite Corporation Textured retroreflective prism structures and molds for forming same
WO1998059266A1 (en) * 1997-06-25 1998-12-30 Reflexite Corporation Textured retroreflective prism structures and molds for forming same
EP1570301A1 (en) * 2002-12-12 2005-09-07 Avery Dennison Corporation Retroreflector with controlled divergence made by the method of localized substrate stress
EP1570301A4 (en) * 2002-12-12 2007-04-11 Avery Dennison Corp Retroreflector with controlled divergence made by the method of localized substrate stress
AU2003304406B2 (en) * 2002-12-12 2009-02-19 Avery Dennison Corporation Retroreflector with controlled divergence made by the method of localized substrate stress
US8371703B2 (en) 2008-10-22 2013-02-12 3M Innovative Properties Company Retroreflective sheeting
US8783879B2 (en) 2008-10-22 2014-07-22 3M Innovative Properties Company Retroreflective sheeting
US9878507B2 (en) 2008-10-22 2018-01-30 3M Innovative Properties Company Retroflective sheeting
US10618234B2 (en) 2008-10-22 2020-04-14 3M Innovative Properties Company Retroreflective sheeting

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