GB940424A - Improved reflecting material - Google Patents
Improved reflecting materialInfo
- Publication number
- GB940424A GB940424A GB4016/60A GB401660A GB940424A GB 940424 A GB940424 A GB 940424A GB 4016/60 A GB4016/60 A GB 4016/60A GB 401660 A GB401660 A GB 401660A GB 940424 A GB940424 A GB 940424A
- Authority
- GB
- United Kingdom
- Prior art keywords
- beads
- backing
- layer
- base film
- reflex
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/222—Studio circuitry; Studio devices; Studio equipment
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/12—Reflex reflectors
- G02B5/126—Reflex reflectors including curved refracting surface
- G02B5/128—Reflex reflectors including curved refracting surface transparent spheres being embedded in matrix
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/54—Accessories
- G03B21/56—Projection screens
- G03B21/60—Projection screens characterised by the nature of the surface
- G03B21/602—Lenticular screens
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Optical Elements Other Than Lenses (AREA)
- Road Signs Or Road Markings (AREA)
- Illuminated Signs And Luminous Advertising (AREA)
Abstract
940,424. Reflex reflectors. MINNESOTA MINING & MANUFACTURING CO. Feb. 4, 1960 [Feb. 4, 1959], No.4016/60. Heading G2J. [Also in Division B2] A reflex reflector comprises a backing to which reflex reflecting beads are bonded, the beads having a refractive index of approximately 1.9 and having specular reflecting means in contact with their undersides and the binder layer including a flatting agent so that the binder layer surface between the beads is substantially flat. As shown in Fig. 3, the reflex reflector comprises a backing sheet 30 having on one surface a pressure sensitive adhesive layer 34 with a temporary linear 35. A base film 31 is provided on the other surface of the backing 30 and bonded to this base film by a layer 33 are glass beads 36 having a specular reflecting coating 37 on their undersides. The backing layer 30 is preferably formed by coating a solution of polyvinyl butyral resin in ethyl "Cellosolve" (Registered Trade Mark) upon a polystyrene coated paper. The base film 31 and the bonding layer 33 are preferably formed from a mixture of an oil modified alkyd varnish solution, melamine formaldehyde resin, phthalo cyanine blue pigment, silica aerogel and metal napthanate dryer solution. Over the tacky surface so formed, a free flowing mass of silvered indigo blue beads are passed and the beads pressed into the tacky coating up to about 40% of the diameter. Preferably these beads have a transmission range in the region 4000 to 5200 Angstrom units. The silver on the exposed parts of the beads is finally etched away.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US79116559A | 1959-02-04 | 1959-02-04 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB940424A true GB940424A (en) | 1963-10-30 |
Family
ID=25152866
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB4016/60A Expired GB940424A (en) | 1959-02-04 | 1960-02-04 | Improved reflecting material |
Country Status (3)
Country | Link |
---|---|
DE (1) | DE1194800B (en) |
FR (1) | FR1256001A (en) |
GB (1) | GB940424A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4104102A (en) * | 1975-02-24 | 1978-08-01 | Morgan Adhesives Company | Method of making a retroreflective laminate |
GB2321565A (en) * | 1997-01-28 | 1998-07-29 | British Broadcasting Corp | Retro-reflective flexible material sheet for use as background in chroma-keying video image composition system |
US7175901B1 (en) | 1999-01-14 | 2007-02-13 | Reflec Plc | Retroreflective inks |
US8647013B2 (en) | 2010-02-09 | 2014-02-11 | Potters Industries, Llc | Reflective substrate surface system, reflective assembly, and methods of improving the visibility of a substrate surface |
US8840956B2 (en) | 2008-10-31 | 2014-09-23 | Potters Industries, Llc | Retroreflective coating and method for applying a retroreflective coating on a structure |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2326634A (en) * | 1941-12-26 | 1943-08-10 | Minnesota Mining & Mfg | Reflex light reflector |
US2379741A (en) * | 1943-01-23 | 1945-07-03 | Minnesota Mining & Mfg | Reflex light reflector |
CH288203A (en) * | 1949-12-07 | 1953-01-15 | Minnesota Mining & Mfg | Light reflectors. |
-
1960
- 1960-02-04 GB GB4016/60A patent/GB940424A/en not_active Expired
- 1960-02-04 DE DEM44230A patent/DE1194800B/en active Pending
- 1960-02-04 FR FR817609A patent/FR1256001A/en not_active Expired
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4104102A (en) * | 1975-02-24 | 1978-08-01 | Morgan Adhesives Company | Method of making a retroreflective laminate |
GB2321565A (en) * | 1997-01-28 | 1998-07-29 | British Broadcasting Corp | Retro-reflective flexible material sheet for use as background in chroma-keying video image composition system |
GB2321565B (en) * | 1997-01-28 | 1999-12-01 | British Broadcasting Corp | Retro-reflective material |
US7175901B1 (en) | 1999-01-14 | 2007-02-13 | Reflec Plc | Retroreflective inks |
US8840956B2 (en) | 2008-10-31 | 2014-09-23 | Potters Industries, Llc | Retroreflective coating and method for applying a retroreflective coating on a structure |
US8647013B2 (en) | 2010-02-09 | 2014-02-11 | Potters Industries, Llc | Reflective substrate surface system, reflective assembly, and methods of improving the visibility of a substrate surface |
Also Published As
Publication number | Publication date |
---|---|
DE1194800B (en) | 1965-06-16 |
FR1256001A (en) | 1961-03-17 |
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