CA973405A - Anti-glare light box - Google Patents

Anti-glare light box

Info

Publication number
CA973405A
CA973405A CA155,466A CA155466A CA973405A CA 973405 A CA973405 A CA 973405A CA 155466 A CA155466 A CA 155466A CA 973405 A CA973405 A CA 973405A
Authority
CA
Canada
Prior art keywords
light box
glare light
glare
box
light
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
CA155,466A
Other languages
English (en)
Other versions
CA155466S (en
Inventor
Dwin R. Craig
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
Original Assignee
DYNATRONICS
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 filed Critical DYNATRONICS
Application granted granted Critical
Publication of CA973405A publication Critical patent/CA973405A/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)
CA155,466A 1971-11-15 1972-11-02 Anti-glare light box Expired CA973405A (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
CA973405A true CA973405A (en) 1975-08-26

Family

ID=22733775

Family Applications (1)

Application Number Title Priority Date Filing Date
CA155,466A Expired CA973405A (en) 1971-11-15 1972-11-02 Anti-glare light box

Country Status (12)

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

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5425004U (fr) * 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
JPH10503290A (ja) * 1993-11-28 1998-03-24 スマートライト・リミテッド 透視装置およびワークステーション
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
US3480365A (en) * 1966-02-09 1969-11-25 Fuji Photo Film Co Ltd Photographic materials having a picture image which may be reversed or varied with respect to the contrast thereof
US3506333A (en) * 1967-01-19 1970-04-14 Polaroid Corp Protective filter combination for intense light flashes

Also Published As

Publication number Publication date
CH560395A5 (fr) 1975-03-27
NL7215021A (fr) 1973-05-17
IL40856A (en) 1975-02-10
JPS4862423A (fr) 1973-08-31
AU456686B2 (en) 1975-01-09
IT973487B (it) 1974-06-10
FR2160455A1 (fr) 1973-06-29
IL40856A0 (en) 1973-01-30
AU4881472A (en) 1974-11-21
US3714413A (en) 1973-01-30
GB1363178A (en) 1974-08-14
DE2255987A1 (de) 1973-05-24
JPS5225254B2 (fr) 1977-07-06
BE791342A (fr) 1973-05-14

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