CA926606A - Variable density light filtering means utilizing leuco phenazine dyes - Google Patents
Variable density light filtering means utilizing leuco phenazine dyesInfo
- Publication number
- CA926606A CA926606A CA079442A CA79442A CA926606A CA 926606 A CA926606 A CA 926606A CA 079442 A CA079442 A CA 079442A CA 79442 A CA79442 A CA 79442A CA 926606 A CA926606 A CA 926606A
- Authority
- CA
- Canada
- Prior art keywords
- filtering means
- light filtering
- variable density
- means utilizing
- density 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
Links
- VEPOHXYIFQMVHW-XOZOLZJESA-N 2,3-dihydroxybutanedioic acid (2S,3S)-3,4-dimethyl-2-phenylmorpholine Chemical compound OC(C(O)C(O)=O)C(O)=O.C[C@H]1[C@@H](OCCN1C)c1ccccc1 VEPOHXYIFQMVHW-XOZOLZJESA-N 0.000 title 1
- PCNDJXKNXGMECE-UHFFFAOYSA-N Phenazine Natural products C1=CC=CC2=NC3=CC=CC=C3N=C21 PCNDJXKNXGMECE-UHFFFAOYSA-N 0.000 title 1
- 239000000975 dye Substances 0.000 title 1
- 238000001914 filtration Methods 0.000 title 1
Classifications
-
- 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
- G03C1/72—Photosensitive compositions not covered by the groups G03C1/005 - G03C1/705
- G03C1/73—Photosensitive compositions not covered by the groups G03C1/005 - G03C1/705 containing organic compounds
- G03C1/732—Leuco dyes
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)
- Optical Filters (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US81495569A | 1969-04-10 | 1969-04-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA926606A true CA926606A (en) | 1973-05-22 |
Family
ID=25216452
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA079442A Expired CA926606A (en) | 1969-04-10 | 1970-04-07 | Variable density light filtering means utilizing leuco phenazine dyes |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US3660299A (enExample) |
| JP (1) | JPS4936619B1 (enExample) |
| CA (1) | CA926606A (enExample) |
| DE (1) | DE2016972A1 (enExample) |
| FR (1) | FR2064039B1 (enExample) |
| GB (1) | GB1245566A (enExample) |
| IL (1) | IL34248A (enExample) |
| NL (1) | NL7005140A (enExample) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102617492A (zh) * | 2012-02-28 | 2012-08-01 | 武汉工程大学 | 健那绿b的合成方法 |
| CN102618064B (zh) * | 2012-02-28 | 2014-04-30 | 武汉工程大学 | 一种健那绿b的合成工艺 |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL6407696A (enExample) * | 1963-12-23 | 1965-06-24 | ||
| US3390933A (en) * | 1964-11-25 | 1968-07-02 | American Optical Corp | Variable density light transmitting device |
-
1969
- 1969-04-10 US US814955A patent/US3660299A/en not_active Expired - Lifetime
-
1970
- 1970-04-06 IL IL34248A patent/IL34248A/xx unknown
- 1970-04-06 DE DE19702016972 patent/DE2016972A1/de not_active Withdrawn
- 1970-04-07 CA CA079442A patent/CA926606A/en not_active Expired
- 1970-04-07 GB GB06406/70A patent/GB1245566A/en not_active Expired
- 1970-04-09 JP JP45029829A patent/JPS4936619B1/ja active Pending
- 1970-04-10 NL NL7005140A patent/NL7005140A/xx unknown
- 1970-04-10 FR FR7012928A patent/FR2064039B1/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE2016972A1 (de) | 1970-10-15 |
| NL7005140A (enExample) | 1970-10-13 |
| GB1245566A (en) | 1971-09-08 |
| FR2064039B1 (enExample) | 1974-08-09 |
| FR2064039A1 (enExample) | 1971-07-16 |
| IL34248A0 (en) | 1970-06-17 |
| US3660299A (en) | 1972-05-02 |
| JPS4936619B1 (enExample) | 1974-10-02 |
| IL34248A (en) | 1972-12-29 |
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