FR2566542B1 - Procede de fabrication de filtre a coefficient de transmission de la lumiere variable sur sa surface - Google Patents

Procede de fabrication de filtre a coefficient de transmission de la lumiere variable sur sa surface

Info

Publication number
FR2566542B1
FR2566542B1 FR8409878A FR8409878A FR2566542B1 FR 2566542 B1 FR2566542 B1 FR 2566542B1 FR 8409878 A FR8409878 A FR 8409878A FR 8409878 A FR8409878 A FR 8409878A FR 2566542 B1 FR2566542 B1 FR 2566542B1
Authority
FR
France
Prior art keywords
manufacturing
light transmission
variable light
transmission coefficient
coefficient filter
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
FR8409878A
Other languages
English (en)
Other versions
FR2566542A1 (fr
Inventor
Pierluigi Testa
Original Assignee
Videocolor
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 Videocolor filed Critical Videocolor
Priority to FR8409878A priority Critical patent/FR2566542B1/fr
Priority to GB08514818A priority patent/GB2161953B/en
Priority to IT67582/85A priority patent/IT1183899B/it
Priority to KR1019850004404A priority patent/KR860000584A/ko
Publication of FR2566542A1 publication Critical patent/FR2566542A1/fr
Application granted granted Critical
Publication of FR2566542B1 publication Critical patent/FR2566542B1/fr
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00—Program-control systems
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Preparing Plates And Mask In Photomechanical Process (AREA)
  • Control Of Washing Machine And Dryer (AREA)
FR8409878A 1984-06-22 1984-06-22 Procede de fabrication de filtre a coefficient de transmission de la lumiere variable sur sa surface Expired FR2566542B1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
FR8409878A FR2566542B1 (fr) 1984-06-22 1984-06-22 Procede de fabrication de filtre a coefficient de transmission de la lumiere variable sur sa surface
GB08514818A GB2161953B (en) 1984-06-22 1985-06-12 Manufacturing a filter having a light transmission coefficient which varies over its surface
IT67582/85A IT1183899B (it) 1984-06-22 1985-06-21 Procedimento di fabbricazione di un filtro a coefficiente di trasmissione della luce variabile sulla sua superficie
KR1019850004404A KR860000584A (ko) 1984-06-22 1985-06-21 가정용 세탁기계의 제어용 클럭 프로그래머

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8409878A FR2566542B1 (fr) 1984-06-22 1984-06-22 Procede de fabrication de filtre a coefficient de transmission de la lumiere variable sur sa surface

Publications (2)

Publication Number Publication Date
FR2566542A1 FR2566542A1 (fr) 1985-12-27
FR2566542B1 true FR2566542B1 (fr) 1988-01-15

Family

ID=9305349

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8409878A Expired FR2566542B1 (fr) 1984-06-22 1984-06-22 Procede de fabrication de filtre a coefficient de transmission de la lumiere variable sur sa surface

Country Status (4)

Country Link
KR (1) KR860000584A (fr)
FR (1) FR2566542B1 (fr)
GB (1) GB2161953B (fr)
IT (1) IT1183899B (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10127225A1 (de) * 2001-05-22 2002-11-28 Zeiss Carl Ultraviolettlicht-Abschwächungsfilter
KR102366955B1 (ko) * 2017-12-06 2022-02-23 제지앙 란티안 엔바이론멘탈 프로텍션 하이테크 코포레이션 리미티드 2,3- 디클로로 -5- 트리 플루오로 메틸 피리딘의 제조 방법

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1049383A (en) * 1962-06-04 1966-11-23 Douglas Aircraft Co Inc Ambient light trapping filter and method of making
US3504960A (en) * 1966-10-11 1970-04-07 Xerox Corp Sagittal ray aperture stop
US4046929A (en) * 1975-05-09 1977-09-06 Vicon Industries, Inc. Attenuation spot filters manufacturing process
JPS5247672A (en) * 1975-10-15 1977-04-15 Hitachi Ltd Illuminance correction filter and manufacturing method thereof
NL7602752A (nl) * 1976-03-17 1977-09-20 Philips Nv Belichtingsinrichting voor het vervaardigen van beeldschermen van kleurentelevisiebeeldbuizen en beeldbuis vervaardigd met een dergelijke inrich- ting.
EP0075044A1 (fr) * 1981-09-19 1983-03-30 Elesta Ag Elektronik Dispositif pour mesurer la réserve de lumière dans un dispositif de barrage lumineux

Also Published As

Publication number Publication date
IT1183899B (it) 1987-10-22
GB2161953B (en) 1987-11-11
IT8567582A0 (it) 1985-06-21
FR2566542A1 (fr) 1985-12-27
KR860000584A (ko) 1986-01-29
GB2161953A (en) 1986-01-22
GB8514818D0 (en) 1985-07-17

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Legal Events

Date Code Title Description
ST Notification of lapse