GB1340645A - Lens for use with a light source - Google Patents
Lens for use with a light sourceInfo
- Publication number
- GB1340645A GB1340645A GB3573272A GB3573272A GB1340645A GB 1340645 A GB1340645 A GB 1340645A GB 3573272 A GB3573272 A GB 3573272A GB 3573272 A GB3573272 A GB 3573272A GB 1340645 A GB1340645 A GB 1340645A
- Authority
- GB
- United Kingdom
- Prior art keywords
- depressions
- arcuate surfaces
- diffuser
- conical
- pyramidal
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V5/00—Refractors for light sources
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2103/00—Elongate light sources, e.g. fluorescent tubes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2113/00—Combination of light sources
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Optical Elements Other Than Lenses (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
- Overhead Projectors And Projection Screens (AREA)
Abstract
1340645 Refractive diffuser EMERSON ELECTRIC CO 31 July 1972 [5 Aug 1971] 35732/72 Heading F4R A refractive diffuser for use with a fluorescent light fitting comprises a plurality of arcuate surfaces on one side of the diffuser, and conical or V-shaped depressions on the other side which are opposite the arcuate surfaces. In one embodiment the depressions are longitudinal grooves 36 and the arcuate surfaces are longitudinal lens segments 32. In another embodiment (Figs. 7 to 10, not shown) the depressions are pyramidal or conical (56) and the arcuate surfaces are spherical lenses (54). In other embodiments concentric annular depressions and lens segments or spherical lenses and pyramidal depressions of different sizes may be used (Figs. 11, 12 and 13 respectively, not shown). The surface 38 between the depressions 36 may not be flat but rather curved or a pair of inclined surfaces. An overlay sheet may be placed over the surface 38.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US16930371A | 1971-08-05 | 1971-08-05 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1340645A true GB1340645A (en) | 1973-12-12 |
Family
ID=22615098
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3573272A Expired GB1340645A (en) | 1971-08-05 | 1972-07-31 | Lens for use with a light source |
Country Status (15)
Country | Link |
---|---|
US (1) | US3735124A (en) |
JP (1) | JPS5144355B2 (en) |
AT (1) | AT331916B (en) |
AU (1) | AU452989B2 (en) |
BE (1) | BE787114A (en) |
BR (1) | BR7205263D0 (en) |
CA (1) | CA948607A (en) |
DE (1) | DE2238589C3 (en) |
ES (1) | ES405592A1 (en) |
FR (1) | FR2148287B1 (en) |
GB (1) | GB1340645A (en) |
IT (1) | IT965964B (en) |
NL (1) | NL155088B (en) |
SE (1) | SE385401B (en) |
ZA (1) | ZA725307B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4450509A (en) * | 1982-08-17 | 1984-05-22 | Thorn Emi Plc | Lanterns for area lighting |
Families Citing this family (36)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3866036A (en) * | 1974-04-16 | 1975-02-11 | Ignacio Goytisolo Taltavull | Fluorescent fixture with optical device |
CA1066250A (en) * | 1974-06-18 | 1979-11-13 | Thomas W. Dey | Lighting panel for use with collimated light |
US4004145A (en) * | 1975-02-24 | 1977-01-18 | Ignacio Goytisolo Taltavull | Nil-luminance lighting panel |
US3978332A (en) * | 1975-07-14 | 1976-08-31 | Ignacio Goytisolo Taltavull | Lighting apparatus with batwing light distribution |
JPS5255689U (en) * | 1975-10-20 | 1977-04-21 | ||
US4118763A (en) * | 1976-04-12 | 1978-10-03 | General Electric Company | Variable transmission prismatic refractors |
FR2480405A1 (en) * | 1980-04-14 | 1981-10-16 | Allibert Exploitation | LIGHT DIFFUSER |
US4703405A (en) * | 1986-07-17 | 1987-10-27 | Ian Lewin | Glare reducing lens |
DE9315199U1 (en) * | 1993-10-08 | 1995-02-09 | Trilux-Lenze Gmbh + Co Kg, 59759 Arnsberg | lamp |
US5541825A (en) * | 1994-08-31 | 1996-07-30 | Hughes Aircraft Company | Dual image CHMSLs without holography |
IT1289716B1 (en) * | 1996-12-05 | 1998-10-16 | Fiat Ricerche | LIGHTING DEVICE SUITABLE TO GENERATE A RECTANGULAR PATTERN IN THE WORKING AREA, FOR EXAMPLE FOR THE LIGHTING OF STRIPS |
US6033094A (en) * | 1997-10-02 | 2000-03-07 | Fresnel Technologies, Inc. | Microlens array for improved illumination patterns |
US6356391B1 (en) | 1999-10-08 | 2002-03-12 | 3M Innovative Properties Company | Optical film with variable angle prisms |
US6845212B2 (en) | 1999-10-08 | 2005-01-18 | 3M Innovative Properties Company | Optical element having programmed optical structures |
US7046905B1 (en) | 1999-10-08 | 2006-05-16 | 3M Innovative Properties Company | Blacklight with structured surfaces |
US6447135B1 (en) | 1999-10-08 | 2002-09-10 | 3M Innovative Properties Company | Lightguide having a directly secured reflector and method of making the same |
DE19955435C1 (en) * | 1999-11-18 | 2001-08-09 | Lid Light Design Dr Ottokar Sc | Anti-glare element for elongated illuminants |
US7837361B2 (en) * | 2000-07-14 | 2010-11-23 | Ledalite Architectural Products | Light control devices implemented with diffusers having controllable diffusion characteristics |
WO2002008799A2 (en) * | 2000-07-14 | 2002-01-31 | Ledalite Architectural Products Inc. | Light control devices with kinoform diffusers |
ITMI20011368A1 (en) * | 2001-06-28 | 2002-12-28 | Sirrah S R L | PROCEDURE FOR THE PRODUCTION OF DIFFUSION SCREENS FOR LIGHTING EQUIPMENT AND DIFFUSER SCREEN SO OBTAINED |
DE10242441A1 (en) * | 2002-09-11 | 2004-04-01 | Erco Leuchten Gmbh | lamp |
US7187505B2 (en) * | 2002-10-07 | 2007-03-06 | Fresnel Technologies, Inc. | Imaging lens for infrared cameras |
GB2408846A (en) * | 2003-12-02 | 2005-06-08 | Sung Tao Ho | LED lamp tube |
JP4499519B2 (en) * | 2004-07-12 | 2010-07-07 | 大日本印刷株式会社 | Diffusion sheet, surface light source device, transmissive display device |
JP5178523B2 (en) * | 2005-11-14 | 2013-04-10 | コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ | Thin and highly efficient optical collimation device |
CN101784836B (en) * | 2007-04-10 | 2012-07-04 | 飞利浦电子公司 | Light control device exhibiting batwing luminous intensity distributions in upper and lower hemispheres |
CN101393278A (en) * | 2007-09-17 | 2009-03-25 | 鸿富锦精密工业(深圳)有限公司 | Back light module unit and prismatic lens thereof |
CN101424384B (en) * | 2007-10-31 | 2011-05-04 | 富士迈半导体精密工业(上海)有限公司 | Light shield and illuminating apparatus employing the light shield |
WO2010010494A1 (en) * | 2008-07-24 | 2010-01-28 | Koninklijke Philips Electronics N.V. | Luminaire device with several lighting units |
US10302275B2 (en) | 2013-06-19 | 2019-05-28 | Bright View Technologies Corporation | Microstructure-based diffusers for creating batwing lighting patterns |
US10072816B2 (en) | 2013-06-19 | 2018-09-11 | Bright View Technologies Corporation | Microstructure-based optical diffusers for creating batwing and other lighting patterns |
DE202013105863U1 (en) * | 2013-12-20 | 2015-03-24 | Zumtobel Lighting Gmbh | Arrangement for fading out the light output |
TW201545384A (en) * | 2014-05-29 | 2015-12-01 | 國立交通大學 | Optical film and light source module |
WO2015184456A1 (en) * | 2014-05-30 | 2015-12-03 | Osram Sylvania Inc. | Light control films and lighting devices including same |
US10267489B2 (en) * | 2015-12-22 | 2019-04-23 | Citizen Electronics Co., Ltd. | Light-emitting apparatus |
KR102578775B1 (en) * | 2021-05-26 | 2023-09-15 | (주)에프비지코리아 | Temperature sensing apparatus using fiber bragg grating sensor |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US593045A (en) * | 1897-11-02 | Light-tran-smitter | ||
GB190908324A (en) * | 1908-10-14 | 1909-09-30 | Otis Angelo Mygatt | Improved Glassware. |
GB620639A (en) * | 1947-01-24 | 1949-03-28 | Holophane Sa | Improvements in and relating to light controlling devices |
US3234376A (en) * | 1963-02-11 | 1966-02-08 | Michael J Ceglia | Glare-free lighting fixture |
-
0
- BE BE787114D patent/BE787114A/en not_active IP Right Cessation
-
1971
- 1971-08-05 US US00169303A patent/US3735124A/en not_active Expired - Lifetime
-
1972
- 1972-07-24 AU AU44893/72A patent/AU452989B2/en not_active Expired
- 1972-07-31 GB GB3573272A patent/GB1340645A/en not_active Expired
- 1972-08-02 NL NL727210615A patent/NL155088B/en not_active IP Right Cessation
- 1972-08-02 ZA ZA725307A patent/ZA725307B/en unknown
- 1972-08-02 DE DE2238589A patent/DE2238589C3/en not_active Expired
- 1972-08-03 AT AT670872A patent/AT331916B/en not_active IP Right Cessation
- 1972-08-03 SE SE7210102A patent/SE385401B/en unknown
- 1972-08-04 CA CA148,817A patent/CA948607A/en not_active Expired
- 1972-08-04 BR BR5263/72A patent/BR7205263D0/en unknown
- 1972-08-04 FR FR7228321A patent/FR2148287B1/fr not_active Expired
- 1972-08-04 JP JP47078242A patent/JPS5144355B2/ja not_active Expired
- 1972-08-04 IT IT51981/72A patent/IT965964B/en active
- 1972-08-05 ES ES405592A patent/ES405592A1/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4450509A (en) * | 1982-08-17 | 1984-05-22 | Thorn Emi Plc | Lanterns for area lighting |
Also Published As
Publication number | Publication date |
---|---|
FR2148287B1 (en) | 1975-09-12 |
ZA725307B (en) | 1973-04-25 |
CA948607A (en) | 1974-06-04 |
ES405592A1 (en) | 1975-08-01 |
FR2148287A1 (en) | 1973-03-11 |
US3735124A (en) | 1973-05-22 |
AU4489372A (en) | 1974-01-31 |
BE787114A (en) | 1973-02-05 |
IT965964B (en) | 1974-02-11 |
DE2238589A1 (en) | 1973-02-22 |
BR7205263D0 (en) | 1973-06-05 |
DE2238589B2 (en) | 1978-08-10 |
JPS4826148A (en) | 1973-04-05 |
JPS5144355B2 (en) | 1976-11-27 |
AU452989B2 (en) | 1974-09-19 |
ATA670872A (en) | 1975-12-15 |
SE385401B (en) | 1976-06-28 |
NL155088B (en) | 1977-11-15 |
NL7210615A (en) | 1973-02-07 |
AT331916B (en) | 1976-08-25 |
DE2238589C3 (en) | 1979-04-12 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed [section 19, patents act 1949] | ||
PCNP | Patent ceased through non-payment of renewal fee |