GB8427328D0 - Photochromic active optical filters - Google Patents

Photochromic active optical filters

Info

Publication number
GB8427328D0
GB8427328D0 GBGB8427328.3A GB8427328A GB8427328D0 GB 8427328 D0 GB8427328 D0 GB 8427328D0 GB 8427328 A GB8427328 A GB 8427328A GB 8427328 D0 GB8427328 D0 GB 8427328D0
Authority
GB
United Kingdom
Prior art keywords
optical filters
active optical
photochromic active
photochromic
filters
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.)
Pending
Application number
GBGB8427328.3A
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.)
UK Secretary of State for Defence
Original Assignee
UK Secretary of State for Defence
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 UK Secretary of State for Defence filed Critical UK Secretary of State for Defence
Priority to GBGB8427328.3A priority Critical patent/GB8427328D0/en
Priority to GB8526601A priority patent/GB2310049B/en
Publication of GB8427328D0 publication Critical patent/GB8427328D0/en
Pending legal-status Critical Current

Links

GBGB8427328.3A 1984-10-29 1984-10-29 Photochromic active optical filters Pending GB8427328D0 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GBGB8427328.3A GB8427328D0 (en) 1984-10-29 1984-10-29 Photochromic active optical filters
GB8526601A GB2310049B (en) 1984-10-29 1985-10-29 Surveillance apparatus incorporating photchromic active optical filters

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GBGB8427328.3A GB8427328D0 (en) 1984-10-29 1984-10-29 Photochromic active optical filters

Publications (1)

Publication Number Publication Date
GB8427328D0 true GB8427328D0 (en) 1996-09-25

Family

ID=10568920

Family Applications (2)

Application Number Title Priority Date Filing Date
GBGB8427328.3A Pending GB8427328D0 (en) 1984-10-29 1984-10-29 Photochromic active optical filters
GB8526601A Expired - Fee Related GB2310049B (en) 1984-10-29 1985-10-29 Surveillance apparatus incorporating photchromic active optical filters

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB8526601A Expired - Fee Related GB2310049B (en) 1984-10-29 1985-10-29 Surveillance apparatus incorporating photchromic active optical filters

Country Status (1)

Country Link
GB (2) GB8427328D0 (en)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1265564A (en) * 1969-07-17 1972-03-01
US4069168A (en) * 1976-10-01 1978-01-17 Ppg Industries, Inc. Tungsten hexacarbonyl in plastic lenses

Also Published As

Publication number Publication date
GB2310049A (en) 1997-08-13
GB2310049B (en) 1998-01-07
GB8526601D0 (en) 1996-10-02

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