GB1363178A - Elimination of glare in light boxes - Google Patents

Elimination of glare in light boxes

Info

Publication number
GB1363178A
GB1363178A GB5132972A GB5132972A GB1363178A GB 1363178 A GB1363178 A GB 1363178A GB 5132972 A GB5132972 A GB 5132972A GB 5132972 A GB5132972 A GB 5132972A GB 1363178 A GB1363178 A GB 1363178A
Authority
GB
United Kingdom
Prior art keywords
light
filter
film
filters
box
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
GB5132972A
Other languages
English (en)
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.)
DYNATRONICS Inc
Original Assignee
DYNATRONICS Inc
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 DYNATRONICS Inc filed Critical DYNATRONICS Inc
Publication of GB1363178A publication Critical patent/GB1363178A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/28—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for polarising
    • G02B27/281—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for polarising used for attenuating light intensity, e.g. comprising rotatable polarising elements

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Polarising Elements (AREA)
  • Mechanical Light Control Or Optical Switches (AREA)
GB5132972A 1971-11-15 1972-11-07 Elimination of glare in light boxes Expired GB1363178A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US19853371A 1971-11-15 1971-11-15

Publications (1)

Publication Number Publication Date
GB1363178A true GB1363178A (en) 1974-08-14

Family

ID=22733775

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5132972A Expired GB1363178A (en) 1971-11-15 1972-11-07 Elimination of glare in light boxes

Country Status (12)

Country Link
US (1) US3714413A (en:Method)
JP (1) JPS5225254B2 (en:Method)
AU (1) AU456686B2 (en:Method)
BE (1) BE791342A (en:Method)
CA (1) CA973405A (en:Method)
CH (1) CH560395A5 (en:Method)
DE (1) DE2255987A1 (en:Method)
FR (1) FR2160455A1 (en:Method)
GB (1) GB1363178A (en:Method)
IL (1) IL40856A (en:Method)
IT (1) IT973487B (en:Method)
NL (1) NL7215021A (en:Method)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5425004U (en:Method) * 1977-07-21 1979-02-19
US4416530A (en) * 1982-03-15 1983-11-22 Ricoh Company, Ltd. Polarizing filters for enhancing contrast in xerographic copying machines
US6311419B1 (en) 1989-12-31 2001-11-06 Smartlight Ltd. Dedicated mammogram viewer
IL92936A (en) 1989-12-31 1998-02-08 Smartlight Ltd Self-masking transparency viewing apparatus
US6088941A (en) * 1992-04-06 2000-07-18 A.D.P. Adaptive Visual Perception Ltd. Transparency viewing apparatus
US5760851A (en) * 1993-11-28 1998-06-02 Smartlight Ltd. Display device
US6269565B1 (en) 1994-11-28 2001-08-07 Smartlight Ltd. Display device
AU4257996A (en) * 1994-11-28 1996-06-19 Smartlight Limited Improved display device
AU5763896A (en) 1995-05-05 1996-11-21 Smartlight Limited Automatic transparency masking
US5963276A (en) * 1997-01-09 1999-10-05 Smartlight Ltd. Back projection transparency viewer with overlapping pixels
JP2001264696A (ja) * 2000-03-16 2001-09-26 Canon Inc 照明光学系及びそれを備えた露光装置
US6646801B1 (en) 2000-06-09 2003-11-11 Benjamin Sley Glare reduction system and method
US20060215076A1 (en) * 2005-03-22 2006-09-28 Karim John H Selective light transmitting and receiving system and method
US7729607B2 (en) * 2006-05-31 2010-06-01 Technologies4All, Inc. Camera glare reduction system and method

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3062087A (en) * 1956-04-09 1962-11-06 Budd Co Apparatus for investigating polarized light phenomena
BE693799A (en:Method) * 1966-02-09 1967-07-17
US3506333A (en) * 1967-01-19 1970-04-14 Polaroid Corp Protective filter combination for intense light flashes

Also Published As

Publication number Publication date
CA973405A (en) 1975-08-26
IL40856A (en) 1975-02-10
IT973487B (it) 1974-06-10
BE791342A (fr) 1973-05-14
AU456686B2 (en) 1975-01-09
CH560395A5 (en:Method) 1975-03-27
FR2160455A1 (en:Method) 1973-06-29
NL7215021A (en:Method) 1973-05-17
US3714413A (en) 1973-01-30
IL40856A0 (en) 1973-01-30
JPS5225254B2 (en:Method) 1977-07-06
DE2255987A1 (de) 1973-05-24
AU4881472A (en) 1974-11-21
JPS4862423A (en:Method) 1973-08-31

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees