GB270790A - Reflecting devices - Google Patents
Reflecting devicesInfo
- 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
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.
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)
| 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 |
-
1926
- 1926-02-08 GB GB354426A patent/GB270790A/en not_active Expired
Cited By (12)
| 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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