SE9600981D0 - Optical interference type filters as a tool for the visually impaired - Google Patents

Optical interference type filters as a tool for the visually impaired

Info

Publication number
SE9600981D0
SE9600981D0 SE9600981A SE9600981A SE9600981D0 SE 9600981 D0 SE9600981 D0 SE 9600981D0 SE 9600981 A SE9600981 A SE 9600981A SE 9600981 A SE9600981 A SE 9600981A SE 9600981 D0 SE9600981 D0 SE 9600981D0
Authority
SE
Sweden
Prior art keywords
optical interference
tool
light
transmission
visually impaired
Prior art date
Application number
SE9600981A
Other languages
Swedish (sv)
Other versions
SE9600981L (en
Inventor
Lars-Aake Svensson
Original Assignee
Lars Aake Svensson
Certec Ct Foer Rehabiliterings
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 Lars Aake Svensson, Certec Ct Foer Rehabiliterings filed Critical Lars Aake Svensson
Priority to SE9600981A priority Critical patent/SE9600981L/en
Publication of SE9600981D0 publication Critical patent/SE9600981D0/en
Publication of SE9600981L publication Critical patent/SE9600981L/en

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/20—Filters
    • G02B5/28—Interference filters
    • 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

  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Ophthalmology & Optometry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • General Health & Medical Sciences (AREA)
  • Optical Filters (AREA)

Abstract

The light filter is an optical interference filter which is applied on a correction glass. Its transmission for blue light is in the interval 2% to 20% and is suitable for providing improved contrast vision without colour vision being completely lost. - The light filter, which forms part of a series of light filters with, in accordance with a logarithmically increasing scale, varied transmission for blue light, and is combined to cause a transmission curve for an eye to evolve. The suitable transmission curve is used as a prescription for producing an individually adjusted correction device.
SE9600981A 1996-03-15 1996-03-15 Optical interference type filters as a tool for the visually impaired SE9600981L (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SE9600981A SE9600981L (en) 1996-03-15 1996-03-15 Optical interference type filters as a tool for the visually impaired

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9600981A SE9600981L (en) 1996-03-15 1996-03-15 Optical interference type filters as a tool for the visually impaired

Publications (2)

Publication Number Publication Date
SE9600981D0 true SE9600981D0 (en) 1996-03-15
SE9600981L SE9600981L (en) 1997-09-16

Family

ID=20401788

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9600981A SE9600981L (en) 1996-03-15 1996-03-15 Optical interference type filters as a tool for the visually impaired

Country Status (1)

Country Link
SE (1) SE9600981L (en)

Also Published As

Publication number Publication date
SE9600981L (en) 1997-09-16

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