CA649852A - Phototropic light filters - Google Patents

Phototropic light filters

Info

Publication number
CA649852A
CA649852A CA649852A CA649852DA CA649852A CA 649852 A CA649852 A CA 649852A CA 649852 A CA649852 A CA 649852A CA 649852D A CA649852D A CA 649852DA CA 649852 A CA649852 A CA 649852A
Authority
CA
Canada
Prior art keywords
phototropic
light filters
filters
light
phototropic light
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
CA649852A
Inventor
A. Wagner Charles
B. Wagner Herman
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.)
Individual
Original Assignee
Individual
Publication date
Application granted granted Critical
Publication of CA649852A publication Critical patent/CA649852A/en
Expired legal-status Critical Current

Links

CA649852A Phototropic light filters Expired CA649852A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA649852T

Publications (1)

Publication Number Publication Date
CA649852A true CA649852A (en) 1962-10-09

Family

ID=35938495

Family Applications (1)

Application Number Title Priority Date Filing Date
CA649852A Expired CA649852A (en) Phototropic light filters

Country Status (1)

Country Link
CA (1) CA649852A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3272646A (en) * 1963-04-16 1966-09-13 American Cyanamid Co Impregnated porous photochromic glass
US3323244A (en) * 1964-04-09 1967-06-06 Corning Glass Works Display device
US3361706A (en) * 1964-03-06 1968-01-02 American Cyanamid Co Control of the photochromic return rate of (arylazo) thioformic arylhydrazidates
US3485764A (en) * 1964-05-22 1969-12-23 American Cyanamid Co Polymeric photochromic compositions stabilized with ultraviolet light absorbers
US4166043A (en) * 1974-12-23 1979-08-28 American Optical Corporation Stabilized photochromic materials
US4367170A (en) * 1975-01-24 1983-01-04 American Optical Corporation Stabilized photochromic materials

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3272646A (en) * 1963-04-16 1966-09-13 American Cyanamid Co Impregnated porous photochromic glass
US3361706A (en) * 1964-03-06 1968-01-02 American Cyanamid Co Control of the photochromic return rate of (arylazo) thioformic arylhydrazidates
US3323244A (en) * 1964-04-09 1967-06-06 Corning Glass Works Display device
US3485764A (en) * 1964-05-22 1969-12-23 American Cyanamid Co Polymeric photochromic compositions stabilized with ultraviolet light absorbers
US3488290A (en) * 1964-05-22 1970-01-06 American Cyanamid Co Stabilized photochromic compositions containing antioxidant
US4166043A (en) * 1974-12-23 1979-08-28 American Optical Corporation Stabilized photochromic materials
US4367170A (en) * 1975-01-24 1983-01-04 American Optical Corporation Stabilized photochromic materials

Similar Documents

Publication Publication Date Title
CA649852A (en) Phototropic light filters
CA646031A (en) Disc filter segment
CA642873A (en) Air filters
CA629924A (en) Light filters
CA651340A (en) Trailer light
AU266489B2 (en) Ambient light filter
CA634895A (en) Air filter
CA639928A (en) Air filter
CA652810A (en) Filters
CA645338A (en) Filter construction
AU3116663A (en) Ambient light filter
CA642725A (en) Filter
CA634287A (en) Filter
CA648426A (en) Light amplifier
CA636443A (en) Light filter for photo-printing
CA650440A (en) Filter elements
AU250337B2 (en) Light fitting
AU269600B2 (en) Waveguide filter
CA620259A (en) Optical filters
AU275832B2 (en) Filter unit
CA646018A (en) Filter unit
CA644202A (en) Air filters
CA645234A (en) Filter assembly
CA654527A (en) Light integrator
CA639179A (en) Kaleidoscope