GB1249722A - Line scanning system - Google Patents

Line scanning system

Info

Publication number
GB1249722A
GB1249722A GB2273/69A GB227369A GB1249722A GB 1249722 A GB1249722 A GB 1249722A GB 2273/69 A GB2273/69 A GB 2273/69A GB 227369 A GB227369 A GB 227369A GB 1249722 A GB1249722 A GB 1249722A
Authority
GB
United Kingdom
Prior art keywords
tube
light
image
photo
mirror
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
GB2273/69A
Inventor
Charles Eugene Love
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.)
Raytheon Co
Original Assignee
Hughes Aircraft 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 Hughes Aircraft Co filed Critical Hughes Aircraft Co
Priority to GB2273/69A priority Critical patent/GB1249722A/en
Publication of GB1249722A publication Critical patent/GB1249722A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C11/00—Photogrammetry or videogrammetry, e.g. stereogrammetry; Photographic surveying
    • G01C11/02—Picture taking arrangements specially adapted for photogrammetry or photographic surveying, e.g. controlling overlapping of pictures
    • G01C11/025—Picture taking arrangements specially adapted for photogrammetry or photographic surveying, e.g. controlling overlapping of pictures by scanning the object
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
    • G01S17/88—Lidar systems specially adapted for specific applications
    • G01S17/89—Lidar systems specially adapted for specific applications for mapping or imaging
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
    • G01S7/04—Display arrangements

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Multimedia (AREA)
  • Electromagnetism (AREA)
  • Mechanical Optical Scanning Systems (AREA)

Abstract

1,249,722. Airborne mapping system. HUGHES AIRCRAFT CO. 14 Jan., 1969, No. 2273/69. Heading H4F. [Also in Divisions G2-G3] Specification describes an airborne, ground scanning and film recording assembly wherein a laser beam 16 Fig. 2 scans a ground line 55 Fig. 1 (not shown) perpendicular to the aircraft's velocity vector (51 the reflected laser light 21 is collected by a very high aperture all spherical surfaced catadioptic system 22, the collected light is conveyed to an image disector tube 24 by a cross-section changing light fibre bundle 23 and the output of the image disector tube 24 is used to intensity modulate the linear sweep of a cathode ray tube 31 having its display focused on a moving film 35 whereby an image of the ground is formed. The oscillatory movement of the mirror 14 causing the laser beam scan, the scan of the image disector tube and the scan of the cathode ray tube 31 are synchronised and varied in proportion to the ratio V/H, where V is the aircraft's velocity and H is its height. The speed of the film is also varied as V/H. The optical system 22, Fig. 3a, 3b comprises a beam diameter. defining stop 207 at the centre of curvature of spherical lens 201 and mirror 202. A strip portion of the outer (upper) surface of lens 201 is mirrored at 203 to focus and reflect the light from mirror 202 onto the wedge end of light fibre bundle 23. As shown in Fig. 6, the bundle 23 converts the linear movement of the reflected light to circular movement at its output end 211, abutting the photo-cathode face of an image director tube 24. The scanning signals applied to the tube 24 cause the electrons emitted by its photo-cathode to all enter a photo- - multiplier section whereby an amplified video signal 26 is produced for application to the cathode ray tube.
GB2273/69A 1969-01-14 1969-01-14 Line scanning system Expired GB1249722A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2273/69A GB1249722A (en) 1969-01-14 1969-01-14 Line scanning system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2273/69A GB1249722A (en) 1969-01-14 1969-01-14 Line scanning system

Publications (1)

Publication Number Publication Date
GB1249722A true GB1249722A (en) 1971-10-13

Family

ID=9736664

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2273/69A Expired GB1249722A (en) 1969-01-14 1969-01-14 Line scanning system

Country Status (1)

Country Link
GB (1) GB1249722A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2530343A1 (en) * 1982-07-19 1984-01-20 United Kingdom Government On-board assembly for detecting cables from an aircraft
EP0135345A1 (en) * 1983-08-12 1985-03-27 Nec Corporation Image pickup system capable of reproducing a stereo and/or a nonstereo image by the use of a single optical system
EP0378669A1 (en) * 1988-07-07 1990-07-25 Kaman Aerospace Corp Imaging lidar system.

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2530343A1 (en) * 1982-07-19 1984-01-20 United Kingdom Government On-board assembly for detecting cables from an aircraft
EP0135345A1 (en) * 1983-08-12 1985-03-27 Nec Corporation Image pickup system capable of reproducing a stereo and/or a nonstereo image by the use of a single optical system
EP0378669A1 (en) * 1988-07-07 1990-07-25 Kaman Aerospace Corp Imaging lidar system.
EP0378669A4 (en) * 1988-07-07 1991-04-10 Kaman Aerospace Corporation Imaging lidar system

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