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GB2284485B - Improvements in or relating to surveillance apparatus - Google Patents

Improvements in or relating to surveillance apparatus

Info

Publication number
GB2284485B
GB2284485B GB8332134A GB8332134A GB2284485B GB 2284485 B GB2284485 B GB 2284485B GB 8332134 A GB8332134 A GB 8332134A GB 8332134 A GB8332134 A GB 8332134A GB 2284485 B GB2284485 B GB 2284485B
Authority
GB
United Kingdom
Prior art keywords
relating
surveillance apparatus
surveillance
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 - Fee Related
Application number
GB8332134A
Other versions
GB8332134D0 (en
GB2284485A (en
Inventor
Colin Lewis
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
Publication of GB8332134D0 publication Critical patent/GB8332134D0/en
Publication of GB2284485A publication Critical patent/GB2284485A/en
Application granted granted Critical
Publication of GB2284485B publication Critical patent/GB2284485B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F9/00—Methods or devices for treatment of the eyes; Devices for putting in contact-lenses; Devices to correct squinting; Apparatus to guide the blind; Protective devices for the eyes, carried on the body or in the hand
    • A61F9/02—Goggles
    • A61F9/022—Use of special optical filters, e.g. multiple layers, filters for protection against laser light or light from nuclear explosions, screens with different filter properties on different parts of the screen; Rotating slit-discs
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Optics & Photonics (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Ophthalmology & Optometry (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • General Physics & Mathematics (AREA)
  • Surface Treatment Of Optical Elements (AREA)
GB8332134A 1982-12-01 1983-12-01 Improvements in or relating to surveillance apparatus Expired - Fee Related GB2284485B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GBGB8234283.3A GB8234283D0 (en) 1982-12-01 1982-12-01 Improvements in or relating to surveillance apparatus

Publications (3)

Publication Number Publication Date
GB8332134D0 GB8332134D0 (en) 1995-03-08
GB2284485A GB2284485A (en) 1995-06-07
GB2284485B true GB2284485B (en) 1995-11-08

Family

ID=10534667

Family Applications (2)

Application Number Title Priority Date Filing Date
GBGB8234283.3A Pending GB8234283D0 (en) 1982-12-01 1982-12-01 Improvements in or relating to surveillance apparatus
GB8332134A Expired - Fee Related GB2284485B (en) 1982-12-01 1983-12-01 Improvements in or relating to surveillance apparatus

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GBGB8234283.3A Pending GB8234283D0 (en) 1982-12-01 1982-12-01 Improvements in or relating to surveillance apparatus

Country Status (1)

Country Link
GB (2) GB8234283D0 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19600590A1 (en) * 1996-01-10 1997-07-24 Tzn Forschung & Entwicklung Protection device for optical systems exposed to laser beams when used in combat

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB625080A (en) * 1947-01-20 1949-06-21 Standard Telephones Cables Ltd Improvements in or relating to the purification of silver chloride for the manufacture of silver chloride windows transmitting infra-red and white light
GB1008538A (en) * 1960-10-20 1965-10-27 Alvin Melville Marks Phototropic cells
GB1044445A (en) * 1963-02-25 1966-09-28 Eastman Kodak Co Silver halide optical elements
GB1239075A (en) * 1967-07-12 1971-07-14
GB1266777A (en) * 1968-07-15 1972-03-15
GB1413544A (en) * 1972-07-03 1975-11-12 American Optical Corp Photochromic light filters

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB625080A (en) * 1947-01-20 1949-06-21 Standard Telephones Cables Ltd Improvements in or relating to the purification of silver chloride for the manufacture of silver chloride windows transmitting infra-red and white light
GB1008538A (en) * 1960-10-20 1965-10-27 Alvin Melville Marks Phototropic cells
GB1008537A (en) * 1960-10-20 1965-10-27 Alvin Melville Marks And Morti Improvements in or relating to phototropic materials
GB1008536A (en) * 1960-10-20 1965-10-27 Alvin Melville Marks Improvements in or relating to phototropic materials
GB1044445A (en) * 1963-02-25 1966-09-28 Eastman Kodak Co Silver halide optical elements
GB1239075A (en) * 1967-07-12 1971-07-14
GB1266777A (en) * 1968-07-15 1972-03-15
GB1413544A (en) * 1972-07-03 1975-11-12 American Optical Corp Photochromic light filters

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Article by Rousseau et al Journal of Optical Physics 42 4048(1965). *

Also Published As

Publication number Publication date
GB8332134D0 (en) 1995-03-08
GB2284485A (en) 1995-06-07
GB8234283D0 (en) 1995-04-12

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19960208