CA974215A - Refractive grid - Google Patents

Refractive grid

Info

Publication number
CA974215A
CA974215A CA141,899A CA141899A CA974215A CA 974215 A CA974215 A CA 974215A CA 141899 A CA141899 A CA 141899A CA 974215 A CA974215 A CA 974215A
Authority
CA
Canada
Prior art keywords
refractive grid
refractive
grid
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
CA141,899A
Other languages
English (en)
Other versions
CA141899S (en
Inventor
Ian Lewin
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.)
Holophane Corp
Original Assignee
Holophane Corp
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 Holophane Corp filed Critical Holophane Corp
Application granted granted Critical
Publication of CA974215A publication Critical patent/CA974215A/en
Expired legal-status Critical Current

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
    • F21V5/04—Refractors for light sources of lens shape

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Optical Elements Other Than Lenses (AREA)
  • Overhead Projectors And Projection Screens (AREA)
CA141,899A 1971-11-18 1972-05-11 Refractive grid Expired CA974215A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US20008471A 1971-11-18 1971-11-18

Publications (1)

Publication Number Publication Date
CA974215A true CA974215A (en) 1975-09-09

Family

ID=22740258

Family Applications (1)

Application Number Title Priority Date Filing Date
CA141,899A Expired CA974215A (en) 1971-11-18 1972-05-11 Refractive grid

Country Status (12)

Country Link
US (1) US3763369A (enExample)
JP (1) JPS5123117B2 (enExample)
AU (1) AU459522B2 (enExample)
CA (1) CA974215A (enExample)
DE (1) DE2225969C2 (enExample)
ES (1) ES402645A1 (enExample)
FR (1) FR2160350B1 (enExample)
GB (1) GB1386323A (enExample)
IT (1) IT968118B (enExample)
NL (1) NL161245C (enExample)
SE (1) SE377717B (enExample)
ZA (1) ZA723238B (enExample)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4173778A (en) * 1976-07-28 1979-11-06 Optical Coating Laboratory, Inc. Lighting fixtures and glass enclosure having high angle anti-reflection coating
DE3044470A1 (de) * 1980-11-26 1982-06-03 Kernforschungsanlage Jülich GmbH, 5170 Jülich Verfahren zur moeglichst gleichmaessigen ausleuchtung einer flaeche ausgehend von einem parallelstrahlenbuendel und vorrichtung der laser-diagnostik
US4703405A (en) * 1986-07-17 1987-10-27 Ian Lewin Glare reducing lens
US4816976A (en) * 1987-02-03 1989-03-28 Manville Corporation High efficiency luminaire with high angle brightness control
US4912613A (en) * 1989-02-27 1990-03-27 Mdt Corporation Cover lens for light
DE9104316U1 (de) * 1991-04-10 1991-06-13 Zumtobel Ag, Dornbirn Leuchtenabdeckung, insbesondere für Leuchtstofflampen
US20110090710A1 (en) * 2009-10-15 2011-04-21 Edmund Joseph Kelly High Efficiency Light Pipe
US9765944B2 (en) 2012-12-11 2017-09-19 GE Lighting Solutions, LLC Troffer luminaire system having total internal reflection lens

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2434049A (en) * 1943-07-30 1948-01-06 Patent License Corp Lighting fixture
US2542114A (en) * 1947-03-26 1951-02-20 L D Bridge Company Prismatic dispersion lens
US3234376A (en) * 1963-02-11 1966-02-08 Michael J Ceglia Glare-free lighting fixture
AT247457B (de) * 1964-03-09 1966-06-10 Austrolux Wiener Elektro Lichtstreuendes Glas oder Kunstglas für Beleuchtungszwecke
US3288990A (en) * 1964-09-25 1966-11-29 K S H Plastics Inc Panel

Also Published As

Publication number Publication date
DE2225969A1 (de) 1973-05-24
GB1386323A (en) 1975-03-05
ES402645A1 (es) 1975-11-16
FR2160350A1 (enExample) 1973-06-29
SE377717B (enExample) 1975-07-21
DE2225969C2 (de) 1983-09-29
NL7206297A (enExample) 1973-05-22
ZA723238B (en) 1973-02-28
JPS4862277A (enExample) 1973-08-30
NL161245B (nl) 1979-08-15
AU459522B2 (en) 1975-03-27
IT968118B (it) 1974-03-20
NL161245C (nl) 1980-01-15
FR2160350B1 (enExample) 1976-01-16
US3763369A (en) 1973-10-02
AU4219072A (en) 1973-11-15
JPS5123117B2 (enExample) 1976-07-14

Similar Documents

Publication Publication Date Title
AU4648672A (en) Compost-toilet
CA969307A (en) Conveyor-mold construction
AU5047472A (en) Alkoxysiloxanols
AU459522B2 (en) Refractive grid
AU472442B2 (en) Grid structure
AU431788B2 (en) Swimmingpool construction
CA951892A (en) Level
AU462761B2 (en) 2-aminoquinoxalines
AU4002472A (en) QUINOXALINE-din-OXIDES
CA886862A (en) Garde-corps metallique et elements similaires
AU4286072A (en) Multiseeders
CA932140A (en) Spirit level
CA881056A (en) Type action
CA886016A (en) New pyridothiazines
CA886592A (en) Lower alkyl-di-higheralkyl-phosphites
CA887205A (en) Dappen-dish construction
CA873078A (en) Gratings
CA867372A (en) 7-oxdiazolyl-coumarins
CA873871A (en) Haloadamantanes
CA864569A (en) 1-pyridyl-2-amino-ethanol-1
CA862782A (en) Alkylhydroxyphenylthioloalkanoates
CA867386A (en) N-aryl-pyrid-2-ones
CA871124A (en) 1-substituted-2-mercaptoimidazoles
CA862122A (en) 1-carbamoyl-3-aroylpyrrolidines
CA864556A (en) Arabinofuranosyl-3-hydrocarbylcytosines