PT68253A - OPTICAL DEVICE PROVIDING A DIRECTING LIGHT BEAM AND ILLUMINATING APPARATUS COMPRISING SUCH A DEVICE - Google Patents

OPTICAL DEVICE PROVIDING A DIRECTING LIGHT BEAM AND ILLUMINATING APPARATUS COMPRISING SUCH A DEVICE

Info

Publication number
PT68253A
PT68253A PT68253A PT6825378A PT68253A PT 68253 A PT68253 A PT 68253A PT 68253 A PT68253 A PT 68253A PT 6825378 A PT6825378 A PT 6825378A PT 68253 A PT68253 A PT 68253A
Authority
PT
Portugal
Prior art keywords
light beam
directing light
illuminating apparatus
optical device
providing
Prior art date
Application number
PT68253A
Other languages
French (fr)
Portuguese (pt)
Original Assignee
Lampes Sa
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 Lampes Sa filed Critical Lampes Sa
Publication of PT68253A publication Critical patent/PT68253A/en

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
    • F21V7/00—Reflectors for light sources
    • F21V7/04—Optical design
    • F21V7/09—Optical design with a combination of different curvatures

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Optical Elements Other Than Lenses (AREA)
PT68253A 1977-07-08 1978-07-04 OPTICAL DEVICE PROVIDING A DIRECTING LIGHT BEAM AND ILLUMINATING APPARATUS COMPRISING SUCH A DEVICE PT68253A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7721193A FR2396922A1 (en) 1977-07-08 1977-07-08 OPTICAL DEVICE PROVIDING A DIRECTIVE LIGHT BEAM AND LIGHTING DEVICE INCLUDING SUCH A DEVICE

Publications (1)

Publication Number Publication Date
PT68253A true PT68253A (en) 1978-08-01

Family

ID=9193183

Family Applications (1)

Application Number Title Priority Date Filing Date
PT68253A PT68253A (en) 1977-07-08 1978-07-04 OPTICAL DEVICE PROVIDING A DIRECTING LIGHT BEAM AND ILLUMINATING APPARATUS COMPRISING SUCH A DEVICE

Country Status (12)

Country Link
BE (1) BE868832A (en)
DE (1) DE2829969A1 (en)
DK (1) DK306378A (en)
ES (1) ES471494A1 (en)
FR (1) FR2396922A1 (en)
GB (1) GB2000855B (en)
IT (1) IT1096999B (en)
LU (1) LU79935A1 (en)
NL (1) NL7807277A (en)
OA (1) OA06004A (en)
PT (1) PT68253A (en)
SE (1) SE7807550L (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
HUT35362A (en) * 1981-04-30 1985-06-28 Tivadar Foeldi Lighting armature, preferably for indoor light

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1011455A (en) * 1949-02-11 1952-06-23 Ets Claude Paz & Silva Lighting fixtures improvements
GB688102A (en) * 1950-08-16 1953-02-25 British Thomson Houston Co Ltd Improvements in and relating to luminaires
DE1696803U (en) * 1953-06-03 1955-04-21 Siemens Ag WIDE RADIATION STREET LIGHTS FOR FLUORESCENT LAMPS.
NL152889B (en) * 1967-03-10 1977-04-15 Gen Electric PROCESS FOR PREPARING A LINEAR POLYCARBONATE COPOLYMER AND ORIENTABLE TEXTILE FIBER OF THIS COPOLYMER.

Also Published As

Publication number Publication date
NL7807277A (en) 1979-01-10
GB2000855B (en) 1982-02-03
IT7825324A0 (en) 1978-07-05
DK306378A (en) 1979-01-09
BE868832A (en) 1978-11-03
LU79935A1 (en) 1978-12-12
SE7807550L (en) 1979-01-09
DE2829969A1 (en) 1979-01-25
GB2000855A (en) 1979-01-17
OA06004A (en) 1981-06-30
FR2396922B1 (en) 1981-06-12
FR2396922A1 (en) 1979-02-02
ES471494A1 (en) 1979-02-01
IT1096999B (en) 1985-08-26

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