GB743577A - Improvements in or relating to recording reflecting instruments - Google Patents

Improvements in or relating to recording reflecting instruments

Info

Publication number
GB743577A
GB743577A GB909152A GB909152A GB743577A GB 743577 A GB743577 A GB 743577A GB 909152 A GB909152 A GB 909152A GB 909152 A GB909152 A GB 909152A GB 743577 A GB743577 A GB 743577A
Authority
GB
United Kingdom
Prior art keywords
cell
photo
electrode
disc
electric
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
GB909152A
Inventor
Igor Vladimir Feldhusen
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.)
STC PLC
Original Assignee
Standard Telephone and Cables PLC
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 Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Priority to GB909152A priority Critical patent/GB743577A/en
Publication of GB743577A publication Critical patent/GB743577A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D15/00—Component parts of recorders for measuring arrangements not specially adapted for a specific variable
    • G01D15/14—Optical recording elements; Recording elements using X-or nuclear radiation

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Eye Examination Apparatus (AREA)
  • Manufacturing Optical Record Carriers (AREA)
  • Printers Or Recording Devices Using Electromagnetic And Radiation Means (AREA)

Abstract

743,577. Photo-electric indicating systems. STANDARD TELEPHONES & CABLES, Ltd. April 1, 1953 [April 9, 1952], No. 9091/52. Class 40 (3). [Also in Group XX] To record the deflections of an optical beam, the beam is passed through a scanning device 4 to a photo-electric cell 8 at a time position in a recurring cycle corresponding to the deflection, the pulses produced by the cell 8 causing an electrical tracing device 6 moving in synchronism with the scanning device to intermittently trace on a recording medium 11. A beam from a light source 1 is reflected by a movable mirror 2 through a lens 3 on to a photo-electric cell 8, and is intercepted by a rotating disc 4 having slots 7 one of which is always traversing the length of the cell 8. The pulses from the cell 8 are amplified and passed to a fixed electrode 10 and to electrodes 6 mounted on a disc driven at the same speed as the disc 4. The electrodes 6, 10 correspond in shape and position to the slots 7 and the photo-electric cell 8 so that when the beam passes through a slot 7, the resulting pulse causes a spark to pass between an electrode 6 and the electrode 10 which spark marks a sheet of recording paper, such as is described in Specification 718,115, [Group XIX], continuously moving between the electrodes 6 and 10. In a modification the scanning device is a cylinder surrounding the photo-electric cell 8 and having a spiral slot, and the tracing device is constituted by a spiral electrode on the cylinder co-operating with the fixed strip electrode. In a further modification, in order to avoid using a long narrow photo-electric cell, the beam after passing the scanning disc 4 enters a transparent plastic block 15 having an outer elliptical surface 14 metallized. The mirror 2 and cell 16 are located at the foci of the ellipse, so that a small cell can be used. The surface of the block 15 facing the mirror 2 is cylindrical so that the light beam enters the block normal to the surface and refraction is prevented.
GB909152A 1952-04-09 1952-04-09 Improvements in or relating to recording reflecting instruments Expired GB743577A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB909152A GB743577A (en) 1952-04-09 1952-04-09 Improvements in or relating to recording reflecting instruments

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB909152A GB743577A (en) 1952-04-09 1952-04-09 Improvements in or relating to recording reflecting instruments

Publications (1)

Publication Number Publication Date
GB743577A true GB743577A (en) 1956-01-18

Family

ID=9865178

Family Applications (1)

Application Number Title Priority Date Filing Date
GB909152A Expired GB743577A (en) 1952-04-09 1952-04-09 Improvements in or relating to recording reflecting instruments

Country Status (1)

Country Link
GB (1) GB743577A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1191591B (en) * 1958-01-17 1965-04-22 Licentia Gmbh Method for photoelectrically determining the relative position of at least one edge of an object

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1191591B (en) * 1958-01-17 1965-04-22 Licentia Gmbh Method for photoelectrically determining the relative position of at least one edge of an object

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