GB1157197A - Device for protecting the eye against laser radiation - Google Patents

Device for protecting the eye against laser radiation

Info

Publication number
GB1157197A
GB1157197A GB5121067A GB5121067A GB1157197A GB 1157197 A GB1157197 A GB 1157197A GB 5121067 A GB5121067 A GB 5121067A GB 5121067 A GB5121067 A GB 5121067A GB 1157197 A GB1157197 A GB 1157197A
Authority
GB
United Kingdom
Prior art keywords
lens
laser radiation
aperture stop
mask
image
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
Application number
GB5121067A
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.)
Eltro GmbH and Co
Original Assignee
Eltro GmbH and Co
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 Eltro GmbH and Co filed Critical Eltro GmbH and Co
Publication of GB1157197A publication Critical patent/GB1157197A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/005—Optical devices external to the laser cavity, specially adapted for lasers, e.g. for homogenisation of the beam or for manipulating laser pulses, e.g. pulse shaping
    • H01S3/0064—Anti-reflection devices, e.g. optical isolaters
    • 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
    • A61F9/007—Methods or devices for eye surgery
    • 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
    • A61F9/023—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 with variable transmission, e.g. photochromic
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B23/00—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices
    • G02B23/16—Housings; Caps; Mountings; Supports, e.g. with counterweight
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J31/00—Cathode ray tubes; Electron beam tubes
    • H01J31/08—Cathode ray tubes; Electron beam tubes having a screen on or from which an image or pattern is formed, picked up, converted, or stored
    • H01J31/50—Image-conversion or image-amplification tubes, i.e. having optical, X-ray, or analogous input, and optical output
    • H01J31/501—Image-conversion or image-amplification tubes, i.e. having optical, X-ray, or analogous input, and optical output with an electrostatic electron optic system
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J1/00—Photometry, e.g. photographic exposure meter
    • G01J1/02—Details
    • G01J2001/0276—Protection
    • G01J2001/0285—Protection against laser damage

Landscapes

  • Health & Medical Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Ophthalmology & Optometry (AREA)
  • Engineering & Computer Science (AREA)
  • General Health & Medical Sciences (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • Biomedical Technology (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Electromagnetism (AREA)
  • Surgery (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Plasma & Fusion (AREA)
  • Astronomy & Astrophysics (AREA)
  • General Physics & Mathematics (AREA)
  • Telescopes (AREA)
  • Microscoopes, Condenser (AREA)
  • Image-Pickup Tubes, Image-Amplification Tubes, And Storage Tubes (AREA)

Abstract

1,157,197. Telescopes. ELTRO G.m.b.H. & CO. GESELLSCHAFT FœR STRAHLUNGSTECHNIK. Nov.10, 1967 [Dec. 6, 1966], No.51210/67. Heading G2J. [Also in Division H4] In an image display system in which incident laser radiation e.g. of infrared frequency, is focused by a lens 5 on to the photo-cathode of image converter tube 1 and the resulting electron beam is focused via electrostatic aperture stop 3 on to the luminescent screen 4 which is viewed via lens 6, a circular mash 8 of diameter D=df/ (a-f) is arranged with its centre on the optical axis of the system a distance b = af/(a-f) from lens 5, where # is the focal length of lens 5, a is the distance between the aperture stop 3 and lens 5, and d is the aperture diameter of the aperture stop. Mask 8 represents the image of stop 3 formed by lens 5. It is stated that mask 8 protects the eye against laser radiation. Two systems may be arranged side by side for binocular viewing.
GB5121067A 1966-12-06 1967-11-10 Device for protecting the eye against laser radiation Expired GB1157197A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEE0032987 1966-12-06

Publications (1)

Publication Number Publication Date
GB1157197A true GB1157197A (en) 1969-07-02

Family

ID=7075948

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5121067A Expired GB1157197A (en) 1966-12-06 1967-11-10 Device for protecting the eye against laser radiation

Country Status (6)

Country Link
BE (1) BE707606A (en)
CH (1) CH489900A (en)
DE (1) DE1541255C3 (en)
GB (1) GB1157197A (en)
NL (1) NL6715071A (en)
SE (1) SE328644B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2126042A (en) * 1980-12-22 1984-03-14 Eltro Gmbh Direction finder system
EP0436845A1 (en) * 1989-12-12 1991-07-17 Hughes Aircraft Company Liquid crystal light valve goggles for eye protection

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2126042A (en) * 1980-12-22 1984-03-14 Eltro Gmbh Direction finder system
EP0436845A1 (en) * 1989-12-12 1991-07-17 Hughes Aircraft Company Liquid crystal light valve goggles for eye protection

Also Published As

Publication number Publication date
DE1541255B2 (en) 1973-06-07
BE707606A (en) 1968-04-16
NL6715071A (en) 1968-06-07
DE1541255A1 (en) 1970-04-02
DE1541255C3 (en) 1974-01-03
SE328644B (en) 1970-09-21
CH489900A (en) 1970-04-30

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees