GB477037A - Improvements in or relating to a method of and apparatus for rendering directly visible objects in infra-red light - Google Patents

Improvements in or relating to a method of and apparatus for rendering directly visible objects in infra-red light

Info

Publication number
GB477037A
GB477037A GB14106/36A GB1410636A GB477037A GB 477037 A GB477037 A GB 477037A GB 14106/36 A GB14106/36 A GB 14106/36A GB 1410636 A GB1410636 A GB 1410636A GB 477037 A GB477037 A GB 477037A
Authority
GB
United Kingdom
Prior art keywords
screen
lens
infra
red light
light
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
GB14106/36A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB477037A publication Critical patent/GB477037A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • G02B23/12—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices with means for image conversion or intensification
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
    • G01B5/08—Measuring arrangements characterised by the use of mechanical techniques for measuring diameters

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Astronomy & Astrophysics (AREA)
  • Optics & Photonics (AREA)
  • Luminescent Compositions (AREA)

Abstract

477,037. Viewing objects by infra-red light. KUNZ, J. May 18, 1936, No. 14106. Convention date, May 18, 1935. [Classes 97 (i) and 98 (i)] An image of the object is produced by an optical system on an excited phosphorescent screen, the stored-up energy of which is driven out as visible radiation in proportion to the intensity of the infra-red light thus forming a positive image which is observed directly. Phosphors such as sodium or caesium bromide in which the light - quenchable luminosity is greater than the heat-quenchable luminosity may be used and the phosphors may be excited first by exposure to cathode or X-rays and then to visible light. As shown in Fig. 2, light passes through a lens 7 and is reflected from a prism 8 to the phosphorescent screen 9 heated or cooled by a substance in the container 13, observation being effected through a lens 10. The apparatus shown in Fig. 3 contains an exciting lamp 22 which illuminates the screen 16 by way of a lens 23 and a prism 24 when an opening 21 in a circular shutter 18 registers with the lens 23 in which position of the shutter the other two apertures are closed. Rotation of the shutter covers the lamp and allows infra-red light to fall on the screen via the lens 15 and prism 14. In Fig. 4, the screen 26 is rotated intermittently about an axis 27 so as to be excited by the lamp 28. Suitable phosphors for the screen may be the Lenard Phosphor CaSPb or ZnSMn, or sodium or caesium bromide. Crystals of rubidium chloride or potassium chloride withdrawn from a fused melt may also be used. Specification 294,671, [Class 97 (i)], is referred to.
GB14106/36A 1935-05-18 1936-05-18 Improvements in or relating to a method of and apparatus for rendering directly visible objects in infra-red light Expired GB477037A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE477037X 1914-01-17

Publications (1)

Publication Number Publication Date
GB477037A true GB477037A (en) 1937-12-20

Family

ID=6542076

Family Applications (1)

Application Number Title Priority Date Filing Date
GB14106/36A Expired GB477037A (en) 1935-05-18 1936-05-18 Improvements in or relating to a method of and apparatus for rendering directly visible objects in infra-red light

Country Status (2)

Country Link
FR (1) FR477037A (en)
GB (1) GB477037A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113481797A (en) * 2021-06-11 2021-10-08 山西省交通建设工程质量检测中心（有限公司） Highway subgrade road surface roughness detection device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113481797A (en) * 2021-06-11 2021-10-08 山西省交通建设工程质量检测中心（有限公司） Highway subgrade road surface roughness detection device

Also Published As

Publication number Publication date
FR477037A (en) 1915-09-17

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