AR198117A1 - IMPROVED OPTICAL FILTER OR SCREEN AND A METHOD TO PRODUCE IT - Google Patents

IMPROVED OPTICAL FILTER OR SCREEN AND A METHOD TO PRODUCE IT

Info

Publication number: AR198117A1
Authority: AR; Argentina
Prior art keywords: screen; produce; optical filter; improved optical; improved
Prior art date: 1972-12-01

Application number

AR250193A

Other languages

Spanish (es)

Original Assignee

American Optical Corp

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.)

1972-12-01

Filing date

1973-09-20

Publication date

1974-05-31

1973-09-20 Application filed by American Optical Corp filed Critical American Optical Corp

1974-05-31 Application granted granted Critical

1974-05-31 Publication of AR198117A1 publication Critical patent/AR198117A1/en

Links

Classifications

- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/16—Nitrogen-containing compounds
- C08K5/34—Heterocyclic compounds having nitrogen in the ring
- C08K5/3412—Heterocyclic compounds having nitrogen in the ring having one nitrogen atom in the ring
- C08K5/3415—Five-membered rings
- C08K5/3417—Five-membered rings condensed with carbocyclic rings
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D11/00—Producing optical elements, e.g. lenses or prisms
- B29D11/00634—Production of filters
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
- G02B1/04—Optical elements characterised by the material of which they are made; Optical coatings for optical elements made of organic materials, e.g. plastics
- G02B1/041—Lenses
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/20—Filters
- G02B5/22—Absorbing filters
- G02B5/23—Photochromic filters
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
- G03C1/00—Photosensitive materials
- G03C1/685—Compositions containing spiro-condensed pyran compounds or derivatives thereof, as photosensitive substances

Landscapes

Physics & Mathematics (AREA)
Chemical & Material Sciences (AREA)
Engineering & Computer Science (AREA)
General Physics & Mathematics (AREA)
Optics & Photonics (AREA)
Health & Medical Sciences (AREA)
Polymers & Plastics (AREA)
Medicinal Chemistry (AREA)
Chemical Kinetics & Catalysis (AREA)
Organic Chemistry (AREA)
Materials Engineering (AREA)
Manufacturing & Machinery (AREA)
Ophthalmology & Optometry (AREA)
Mechanical Engineering (AREA)
Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)
Eyeglasses (AREA)
Optical Filters (AREA)

AR250193A 1972-12-01 1973-09-20 IMPROVED OPTICAL FILTER OR SCREEN AND A METHOD TO PRODUCE IT AR198117A1 (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
US31118872A	1972-12-01	1972-12-01

Publications (1)

Publication Number	Publication Date
AR198117A1 true AR198117A1 (en)	1974-05-31

Family

ID=23205794

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
AR250193A AR198117A1 (en)	1972-12-01	1973-09-20	IMPROVED OPTICAL FILTER OR SCREEN AND A METHOD TO PRODUCE IT

Country Status (11)

Country	Link
JP (1)	JPS4989551A (en)
AR (1)	AR198117A1 (en)
AT (1)	ATA897573A (en)
AU (1)	AU6133373A (en)
BR (1)	BR7309247D0 (en)
DE (1)	DE2347018A1 (en)
FR (1)	FR2211666A1 (en)
GB (1)	GB1418089A (en)
IL (1)	IL43211A0 (en)
IT (1)	IT997765B (en)
NL (1)	NL7316400A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JPS5393246U (en) *	1976-12-28	1978-07-29
FR2415318A1 (en) *	1978-01-18	1979-08-17	Essilor Int	PROCESS FOR THE INTEGRATION OF A PHOTOCHROMIC SUBSTANCE INTO A BASE SUBSTRATE TRANSLUCENT IN ORGANIC MATTER, AND BASIC TRANSPARENT SUBSTRATE
JPS5582623U (en) *	1978-11-01	1980-06-07
US4286957A (en)	1979-01-10	1981-09-01	Essilor International "Cie Generale D'optique"	Process of integrating a photochromic substance into an ophthalmic lens and a photochromic lens of organic material
US4931220A (en) *	1987-11-24	1990-06-05	Ppg Industries, Inc.	Organic photochromic pigment particulates

1973
- 1973-09-12 IL IL43211A patent/IL43211A0/en unknown
- 1973-09-15 DE DE19732347018 patent/DE2347018A1/en active Pending
- 1973-09-20 AR AR250193A patent/AR198117A1/en active
- 1973-09-27 GB GB4529973A patent/GB1418089A/en not_active Expired
- 1973-10-12 AU AU61333/73A patent/AU6133373A/en not_active Expired
- 1973-10-16 IT IT53158/73A patent/IT997765B/en active
- 1973-10-23 AT AT897573A patent/ATA897573A/en not_active Application Discontinuation
- 1973-11-26 BR BR9247/73A patent/BR7309247D0/en unknown
- 1973-11-29 FR FR7343536A patent/FR2211666A1/fr not_active Withdrawn
- 1973-11-30 NL NL7316400A patent/NL7316400A/xx unknown
- 1973-11-30 JP JP48133642A patent/JPS4989551A/ja active Pending

Also Published As

Publication number	Publication date
AU6133373A (en)	1975-04-17
ATA897573A (en)	1976-07-15
GB1418089A (en)	1975-12-17
IT997765B (en)	1975-12-30
DE2347018A1 (en)	1974-06-06
FR2211666A1 (en)	1974-07-19
BR7309247D0 (en)	1974-08-29
NL7316400A (en)	1974-06-05
IL43211A0 (en)	1973-11-28
JPS4989551A (en)	1974-08-27

Publication	Publication Date	Title
SE409733B (en)	1979-09-03	NET AND PROCEDURE FOR ITS PRODUCTION
SE385194B (en)	1976-06-14	ELECTROSTATIC FILTER
AR212230A1 (en)	1978-06-15	IMPROVEMENTS IN A PRESS-TUBULAR FILTER
SE392817B (en)	1977-04-25	FILTER DEVICE
IT999654B (en)	1976-03-10	IMPROVEMENTS IN OR RELATING TO A FILTRATION APPARATUS
AT339264B (en)	1977-10-10	GAS FILTER
SE400185B (en)	1978-03-20	LIQUID FILTER
SE7512561L (en)	1976-05-10	FILTER
AT329591B (en)	1976-05-25	FILTER AND WATER RECOVERY ARRANGEMENT
CH537603A (en)	1973-05-31	Acousto-optical light filter
BE801525A (en)	1973-10-15	PIEZOELECTRIC FILTER
FR2274793A1 (en)	1976-01-09	AIR FILTER
FI56615B (en)	1979-11-30	FILTER FOER TOBAKSROEK
IT996144B (en)	1975-12-10	DUST FILTER
FI55604B (en)	1979-05-31	FILTER FOER TOBAKSROEK
AR198117A1 (en)	1974-05-31	IMPROVED OPTICAL FILTER OR SCREEN AND A METHOD TO PRODUCE IT
IT1046059B (en)	1980-06-30	FILTER NET
AR205875A1 (en)	1976-06-15	METHOD TO PREPARE SUBSTITUTED 3-AMINOPROP-1-ENSO AND COMPOUNDS TO CARRY IT OUT
BE801475A (en)	1973-10-15	SUSPENDED FILTER
BE798471A (en)	1973-08-16	SELF-CLEANING FILTER
AT360963B (en)	1981-02-10	FILTER ELEMENT
BE752699A (en)	1970-12-30	SMOKE FILTER
IT986740B (en)	1975-01-30	FILTER CARTRIDGE AND PROCEDURE FOR MANUFACTURING THIS CARTRIDGE
AR195694A1 (en)	1973-10-31	AN ELECTROMECHANICAL FILTER
SE7512464L (en)	1976-05-10	ELECTROMECHANICAL FILTER