IT8567582A0 - PROCEDURE FOR MANUFACTURING A FILTER WITH VARIABLE LIGHT TRANSMISSION COEFFICIENT ON ITS SURFACE - Google Patents

PROCEDURE FOR MANUFACTURING A FILTER WITH VARIABLE LIGHT TRANSMISSION COEFFICIENT ON ITS SURFACE

Info

Publication number
IT8567582A0
IT8567582A0 IT8567582A IT6758285A IT8567582A0 IT 8567582 A0 IT8567582 A0 IT 8567582A0 IT 8567582 A IT8567582 A IT 8567582A IT 6758285 A IT6758285 A IT 6758285A IT 8567582 A0 IT8567582 A0 IT 8567582A0
Authority
IT
Italy
Prior art keywords
procedure
filter
manufacturing
light transmission
variable light
Prior art date
Application number
IT8567582A
Other languages
Italian (it)
Other versions
IT1183899B (en
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
Publication of IT8567582A0 publication Critical patent/IT8567582A0/en
Application granted granted Critical
Publication of IT1183899B publication Critical patent/IT1183899B/en

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—Programme-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)
  • Control Of Washing Machine And Dryer (AREA)
  • Preparing Plates And Mask In Photomechanical Process (AREA)
IT67582/85A 1984-06-22 1985-06-21 PROCEDURE FOR THE MANUFACTURE OF A FILTER WITH VARIABLE LIGHT TRANSMISSION COEFFICIENT ON ITS SURFACE IT1183899B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8409878A FR2566542B1 (en) 1984-06-22 1984-06-22 METHOD FOR MANUFACTURING A VARIABLE LIGHT TRANSMISSION COEFFICIENT FILTER ON ITS SURFACE

Publications (2)

Publication Number Publication Date
IT8567582A0 true IT8567582A0 (en) 1985-06-21
IT1183899B IT1183899B (en) 1987-10-22

Family

ID=9305349

Family Applications (1)

Application Number Title Priority Date Filing Date
IT67582/85A IT1183899B (en) 1984-06-22 1985-06-21 PROCEDURE FOR THE MANUFACTURE OF A FILTER WITH VARIABLE LIGHT TRANSMISSION COEFFICIENT ON ITS SURFACE

Country Status (4)

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

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10127225A1 (en) 2001-05-22 2002-11-28 Zeiss Carl Ultraviolet light cut filter
US11186546B2 (en) * 2017-12-06 2021-11-30 Zhejiang Lantian Environmental Protection Hi-Tech Co., Ltd. Method for preparing 2,3-dichloro-5-trifluoromethylpyridine with high selectivity

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 (en) * 1976-03-17 1977-09-20 Philips Nv EXPOSURE DEVICE FOR MANUFACTURING DISPLAYS OF COLOR TV DISPLAY TUBES AND DISPLAY TUBE MADE WITH SUCH A DEVICE.
EP0075044A1 (en) * 1981-09-19 1983-03-30 Elesta Ag Elektronik Aid for measuring the surplus of light in light barriers

Also Published As

Publication number Publication date
FR2566542B1 (en) 1988-01-15
FR2566542A1 (en) 1985-12-27
KR860000584A (en) 1986-01-29
IT1183899B (en) 1987-10-22
GB2161953B (en) 1987-11-11
GB8514818D0 (en) 1985-07-17
GB2161953A (en) 1986-01-22

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