Photon push-pull radiation detector for use in chromatically selective cat flap control and 1000 megaton earth-orbital peace-keeping bomb

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Publication number
GB1426698A
Authority
GB
Grant status
Application
Patent type
Prior art keywords
radiation
plate
shown
detector
earth
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
GB1780874A
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.)
PEDRICK AP
Original Assignee
Pedrick A P
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

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Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01JMEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED, VISIBLE OR ULTRA-VIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J1/00Photometry, e.g. photographic exposure meter
    • G01J1/56Photometry, e.g. photographic exposure meter using radiation pressure or radiometer effect
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01JMEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED, VISIBLE OR ULTRA-VIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J1/00Photometry, e.g. photographic exposure meter
    • G01J1/02Details
    • G01J1/04Optical or mechnical part supplementary adjustable parts
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01JMEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED, VISIBLE OR ULTRA-VIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J1/00Photometry, e.g. photographic exposure meter
    • G01J1/02Details
    • G01J1/04Optical or mechnical part supplementary adjustable parts
    • G01J1/0407Optical elements not provided otherwise, e.g. manifolds, windows, holograms, gratings
    • G01J1/0411Optical elements not provided otherwise, e.g. manifolds, windows, holograms, gratings using focussing or collimating elements, i.e. lenses or mirrors; Aberration correction
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01JMEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED, VISIBLE OR ULTRA-VIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J1/00Photometry, e.g. photographic exposure meter
    • G01J1/02Details
    • G01J1/04Optical or mechnical part supplementary adjustable parts
    • G01J1/0407Optical elements not provided otherwise, e.g. manifolds, windows, holograms, gratings
    • G01J1/0414Optical elements not provided otherwise, e.g. manifolds, windows, holograms, gratings using plane or convex mirrors, parallel phase plates, or plane beam-splitters

Abstract

1426698 Radiation detectors A P PEDRICK 23 April 1974 17808/74 Heading G1X In a radiation detector radiation entering tube 1 is focused by cofocal concave and convex parabolic mirrors 2, 3 and convex lens 4 on to a movably mounted plate 5. The plate may have a black or mirrored surface, Fig. 5 (not shown), and it is asserted that if black the plate is pushed against adjustable compression spring 10 or if mirrored is pulled against adjustable tension spring (10'), a predetermined level of radiation causing sufficient movement of the plate to bridge contacts 7. Applications of the detector to a fur colouration selective cat flap Figs. 6 and 7 (not shown) and an earth orbital automatic deterrent system, Figs. 8 to 10 (not shown) are also described.

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5581374A (en) * 1992-02-18 1996-12-03 Canon Kabushiki Kaisha Color image communicating apparatus
EP1832859B1 (en) * 2006-02-10 2015-12-30 STMicroelectronics Inc MEMS radiometer

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