GB467059A - A photoelectric cell suitable for use in the reproduction of, or recording of sound records by the balanced cell system - Google Patents

A photoelectric cell suitable for use in the reproduction of, or recording of sound records by the balanced cell system

Info

Publication number
GB467059A
GB467059A GB25152/36A GB2515236A GB467059A GB 467059 A GB467059 A GB 467059A GB 25152/36 A GB25152/36 A GB 25152/36A GB 2515236 A GB2515236 A GB 2515236A GB 467059 A GB467059 A GB 467059A
Authority
GB
United Kingdom
Prior art keywords
cell
reproduction
anodes
recording
shaped
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
GB25152/36A
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.)
Zeiss Ikon AG
Original Assignee
Zeiss Ikon AG
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 Zeiss Ikon AG filed Critical Zeiss Ikon AG
Publication of GB467059A publication Critical patent/GB467059A/en
Expired legal-status Critical Current

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  • Optical Recording Or Reproduction (AREA)
  • Packaging Of Annular Or Rod-Shaped Articles, Wearing Apparel, Cassettes, Or The Like (AREA)

Abstract

467,059. Photo-electric cells. 'ZEISS IKON AKT.-GES. Sept. 15, 1936, No. 25152. Convention date, Jan. 29. [Class 39 (i)] A photo-electric cell, for use in the reproduction or recording of sound films made by the balanced cell system, has a single cathode and two separated anodes, the envelope being so shaped that light entering one half of the cell cannot reach the other half. As shown in Fig. 3, a kidney-shaped envelope 1 is divided into two parts, each containing an anode 3, 4, by a pinch 6, shaped so as to reflect light on to the correct half of the cathode 2. A grid 5 acts as an electrostatic screen and as a light trap. The cell is mounted inside a sound roller 7 over which the film 8 slides. In the circuit shown in Fig. 3, a battery is connected through a potentiometer 14 and resistances 17, 18 with the anodes 3, 4 and the primary of the transformer 13 is connected with the anodes through condensers 15, 16 so that it is not loaded with the steady current of the cell.
GB25152/36A 1936-01-29 1936-09-15 A photoelectric cell suitable for use in the reproduction of, or recording of sound records by the balanced cell system Expired GB467059A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE467059X 1936-01-29

Publications (1)

Publication Number Publication Date
GB467059A true GB467059A (en) 1937-06-10

Family

ID=6540640

Family Applications (1)

Application Number Title Priority Date Filing Date
GB25152/36A Expired GB467059A (en) 1936-01-29 1936-09-15 A photoelectric cell suitable for use in the reproduction of, or recording of sound records by the balanced cell system

Country Status (1)

Country Link
GB (1) GB467059A (en)

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