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
  • A61F9/04—Eye-masks ; Devices to be worn on the face, not intended for looking through; Eye-pads for sunbathing
  • A61F9/06—Masks, shields or hoods for welders
  • A61F9/065—Masks, shields or hoods for welders use of particular optical filters
• • G—PHYSICS
  • G02—OPTICS
  • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
  • G02B5/00—Optical elements other than lenses
  • G02B5/20—Filters
  • G02B5/28—Interference filters
  • G02B5/281—Interference filters designed for the infrared light
  • G02B5/282—Interference filters designed for the infrared light reflecting for infrared and transparent for visible light, e.g. heat reflectors, laser protection
• • G—PHYSICS
  • G02—OPTICS
  • G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
  • G02C7/00—Optical parts
  • G02C7/10—Filters, e.g. for facilitating adaptation of the eyes to the dark; Sunglasses
• • G—PHYSICS
  • G02—OPTICS
  • G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
  • G02C7/00—Optical parts
  • G02C7/10—Filters, e.g. for facilitating adaptation of the eyes to the dark; Sunglasses
  • G02C7/107—Interference colour filters

Landscapes

• Health & Medical Sciences (AREA)
• Physics & Mathematics (AREA)
• Ophthalmology & Optometry (AREA)
• General Health & Medical Sciences (AREA)
• General Physics & Mathematics (AREA)
• Optics & Photonics (AREA)
• Heart & Thoracic Surgery (AREA)
• Biomedical Technology (AREA)
• Engineering & Computer Science (AREA)
• Vascular Medicine (AREA)
• Life Sciences & Earth Sciences (AREA)
• Animal Behavior & Ethology (AREA)
• Public Health (AREA)
• Veterinary Medicine (AREA)
• Optical Filters (AREA)
• Machine Tool Copy Controls (AREA)

Applications Claiming Priority (1)

Publications (1)

Family

ID=20316905

Family Applications (1)

Country Status (11)

Families Citing this family (4)

• 1973
  • 1973-03-14 SE SE7303543A patent/SE386066B/xx unknown
• 1974
  • 1974-03-01 GB GB933174A patent/GB1468963A/en not_active Expired
  • 1974-03-05 NL NL7402951A patent/NL7402951A/xx not_active Application Discontinuation
  • 1974-03-09 JP JP2764874A patent/JPS5070039A/ja active Pending
  • 1974-03-11 CH CH337274A patent/CH566776A5/xx not_active IP Right Cessation
  • 1974-03-12 FR FR7408308A patent/FR2221118B1/fr not_active Expired
  • 1974-03-13 BR BR190674A patent/BR7401906D0/pt unknown
  • 1974-03-13 CA CA194,896A patent/CA999171A/en not_active Expired
  • 1974-03-14 DK DK142874A patent/DK133658B/da not_active IP Right Cessation
  • 1974-03-14 DE DE19742412302 patent/DE2412302A1/de not_active Ceased
  • 1974-04-08 IT IT2067174A patent/IT1006366B/it active

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