DE3524734A1 - Reflektoranordnung und damit gebildete filmbetrachtungseinrichtung mit einstellbarer helligkeit - Google Patents

Reflektoranordnung und damit gebildete filmbetrachtungseinrichtung mit einstellbarer helligkeit

Info

Publication number
DE3524734A1
DE3524734A1 DE19853524734 DE3524734A DE3524734A1 DE 3524734 A1 DE3524734 A1 DE 3524734A1 DE 19853524734 DE19853524734 DE 19853524734 DE 3524734 A DE3524734 A DE 3524734A DE 3524734 A1 DE3524734 A1 DE 3524734A1
Authority
DE
Germany
Prior art keywords
light
reflector arrangement
areas
dark
reflector
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.)
Granted
Application number
DE19853524734
Other languages
German (de)
English (en)
Other versions
DE3524734C2 (enrdf_load_stackoverflow
Inventor
Claus Haehnel
Helmut Pietschmann
Siegfried Buehrer
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.)
RITTER GMBH DENTALEINRICHTUNGEN, 7500 KARLSRUHE, D
Original Assignee
RITTER AG
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 RITTER AG filed Critical RITTER AG
Priority to DE19853524734 priority Critical patent/DE3524734A1/de
Publication of DE3524734A1 publication Critical patent/DE3524734A1/de
Application granted granted Critical
Publication of DE3524734C2 publication Critical patent/DE3524734C2/de
Granted 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
    • F21V7/00—Reflectors for light sources
    • 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
    • F21V9/00—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters
    • F21V9/40—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters with provision for controlling spectral properties, e.g. colour, or intensity
    • 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
    • G02B27/02—Viewing or reading apparatus
    • G02B27/022—Viewing apparatus
    • G02B27/024—Viewing apparatus comprising a light source, e.g. for viewing photographic slides, X-ray transparancies

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Blinds (AREA)
DE19853524734 1985-07-11 1985-07-11 Reflektoranordnung und damit gebildete filmbetrachtungseinrichtung mit einstellbarer helligkeit Granted DE3524734A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19853524734 DE3524734A1 (de) 1985-07-11 1985-07-11 Reflektoranordnung und damit gebildete filmbetrachtungseinrichtung mit einstellbarer helligkeit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19853524734 DE3524734A1 (de) 1985-07-11 1985-07-11 Reflektoranordnung und damit gebildete filmbetrachtungseinrichtung mit einstellbarer helligkeit

Publications (2)

Publication Number Publication Date
DE3524734A1 true DE3524734A1 (de) 1987-01-29
DE3524734C2 DE3524734C2 (enrdf_load_stackoverflow) 1987-07-30

Family

ID=6275478

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19853524734 Granted DE3524734A1 (de) 1985-07-11 1985-07-11 Reflektoranordnung und damit gebildete filmbetrachtungseinrichtung mit einstellbarer helligkeit

Country Status (1)

Country Link
DE (1) DE3524734A1 (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0555863A3 (en) * 1992-02-14 1994-08-17 Karl Gerhard Lightstand, illumination plate or the like for transparencies with adjustable colour temperature

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1893910U (de) * 1961-11-21 1964-06-04 Bechtold Von Massenbach Vorrichtung zur verhinderung der blendwirkung, insbesondere von kraftfahrzeugen.
US3166253A (en) * 1962-01-22 1965-01-19 Aron Kurt Lighting fixtures
DE2618918B2 (de) * 1975-05-02 1978-01-19 Gottschalk, Robert Edward, Los Angeles, Calif. (V.St.A.) Vorrichtung zum veraendern der lichtintensitaet einer leuchte
DE2744140B2 (de) * 1977-09-30 1980-12-18 Siemens Ag, 1000 Berlin Und 8000 Muenchen Beleuchtungsvorrichtung für ärztliche, insbesondere zahnärztliche Zwecke
DE3212284A1 (de) * 1982-04-02 1983-10-13 Heinrich 6238 Hofheim Wendel Leuchtengehaeuse

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1893910U (de) * 1961-11-21 1964-06-04 Bechtold Von Massenbach Vorrichtung zur verhinderung der blendwirkung, insbesondere von kraftfahrzeugen.
US3166253A (en) * 1962-01-22 1965-01-19 Aron Kurt Lighting fixtures
DE2618918B2 (de) * 1975-05-02 1978-01-19 Gottschalk, Robert Edward, Los Angeles, Calif. (V.St.A.) Vorrichtung zum veraendern der lichtintensitaet einer leuchte
DE2744140B2 (de) * 1977-09-30 1980-12-18 Siemens Ag, 1000 Berlin Und 8000 Muenchen Beleuchtungsvorrichtung für ärztliche, insbesondere zahnärztliche Zwecke
DE3212284A1 (de) * 1982-04-02 1983-10-13 Heinrich 6238 Hofheim Wendel Leuchtengehaeuse

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0555863A3 (en) * 1992-02-14 1994-08-17 Karl Gerhard Lightstand, illumination plate or the like for transparencies with adjustable colour temperature

Also Published As

Publication number Publication date
DE3524734C2 (enrdf_load_stackoverflow) 1987-07-30

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Legal Events

Date Code Title Description
OP8 Request for examination as to paragraph 44 patent law
D2 Grant after examination
8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: RITTER GMBH DENTALEINRICHTUNGEN, 7500 KARLSRUHE, D

8339 Ceased/non-payment of the annual fee
8327 Change in the person/name/address of the patent owner

Owner name: RITTER-IBW DENTALSYSTEME GMBH, 08297 ZWOENITZ, DE