BR8906425A - Filtro de transcurso de luz - Google Patents

Filtro de transcurso de luz

Info

Publication number
BR8906425A
BR8906425A BR8906425A BR8906425A BR8906425A BR 8906425 A BR8906425 A BR 8906425A BR 8906425 A BR8906425 A BR 8906425A BR 8906425 A BR8906425 A BR 8906425A BR 8906425 A BR8906425 A BR 8906425A
Authority
BR
Brazil
Prior art keywords
light trip
trip filter
filter
light
trip
Prior art date
Application number
BR8906425A
Other languages
English (en)
Inventor
Saverio Sanvido
Gerard Marquis
Original Assignee
Contraves 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 Contraves Ag filed Critical Contraves Ag
Publication of BR8906425A publication Critical patent/BR8906425A/pt

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
    • G02B26/007—Optical devices or arrangements for the control of light using movable or deformable optical elements the movable or deformable optical element controlling the colour, i.e. a spectral characteristic, of the light
    • G02B26/008—Optical devices or arrangements for the control of light using movable or deformable optical elements the movable or deformable optical element controlling the colour, i.e. a spectral characteristic, of the light in the form of devices for effecting sequential colour changes, e.g. colour wheels
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/20—Filters
    • G02B5/205—Neutral density filters
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/006—Filter holders

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Astronomy & Astrophysics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Optical Filters (AREA)
  • Blocking Light For Cameras (AREA)
  • Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
BR8906425A 1988-12-22 1989-12-13 Filtro de transcurso de luz BR8906425A (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH474688 1988-12-22

Publications (1)

Publication Number Publication Date
BR8906425A true BR8906425A (pt) 1990-08-28

Family

ID=4281801

Family Applications (1)

Application Number Title Priority Date Filing Date
BR8906425A BR8906425A (pt) 1988-12-22 1989-12-13 Filtro de transcurso de luz

Country Status (6)

Country Link
EP (1) EP0374565B1 (pt)
BR (1) BR8906425A (pt)
CA (1) CA2005352C (pt)
DE (1) DE58904732D1 (pt)
EG (1) EG18768A (pt)
TR (1) TR24004A (pt)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI258600B (en) * 2005-02-16 2006-07-21 Prodisc Technology Inc Light splitter device

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2246270A1 (de) * 1971-09-23 1973-03-29 Ferranti Ltd Vorrichtung zur bildung einer optischen oeffnung mit variabler flaeche
GB2074339B (en) * 1980-04-18 1984-01-18 Ferranti Ltd Optical attenuator
US4443696A (en) * 1981-08-28 1984-04-17 John Taboada Optical beam intensity control system
US4778263A (en) * 1987-05-29 1988-10-18 The United States Of America As Respresented By The Department Of Energy Variable laser attenuator

Also Published As

Publication number Publication date
CA2005352A1 (en) 1990-06-22
EP0374565A2 (de) 1990-06-27
CA2005352C (en) 1999-09-07
EP0374565A3 (en) 1990-10-31
DE58904732D1 (de) 1993-07-22
EG18768A (en) 1994-01-30
EP0374565B1 (de) 1993-06-16
TR24004A (tr) 1991-03-01

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Legal Events

Date Code Title Description
FG Letter patent granted
TC Change of name
PC Transfer

Free format text: WERKZEUGMASCHINENFABRIK OERLIKON-BOEHRLE AG (CH)

TC Change of name
B21A Patent or certificate of addition expired [chapter 21.1 patent gazette]

Free format text: PATENTE EXTINTA EM 13/12/2004