GB374391A - Improvements in television apparatus - Google Patents
Improvements in television apparatusInfo
- Publication number
- GB374391A GB374391A GB2807/32A GB280732A GB374391A GB 374391 A GB374391 A GB 374391A GB 2807/32 A GB2807/32 A GB 2807/32A GB 280732 A GB280732 A GB 280732A GB 374391 A GB374391 A GB 374391A
- Authority
- GB
- United Kingdom
- Prior art keywords
- wheels
- shutter
- employed
- light
- slots
- 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
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N3/00—Scanning details of television systems; Combination thereof with generation of supply voltages
- H04N3/02—Scanning details of television systems; Combination thereof with generation of supply voltages by optical-mechanical means only
- H04N3/08—Scanning details of television systems; Combination thereof with generation of supply voltages by optical-mechanical means only having a moving reflector
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Mechanical Optical Scanning Systems (AREA)
Abstract
374,391. Television. KAROLUS, A., 5, Linnestrasse, Leipsic, Germany. Jan. 30, 1932, No. 2807. [Class 40 (iii).] In a picture-scanning device for television purposes, in order to permit the use of larger mirrors, two or more mirror-wheels 7 arranged side by side on a shaft 10 are adapted to sweep separate portions of the picture surface 8 and are brought into action successively by means of a shutter 9 or by a device for diverting the light from wheel to wheel. In the construction shown two wheels 7 are employed and are associated with an opaque rotatable shutter 9, 'in which two semicircular slots 11 are cut and which is rotated by gearing 12 at half the speed of the wheels. Preferably the diameter of the shutter is twice the diameter of the wheels so that the peripheral speeds at the point of incidence of the light are approximately the same. To avoid the use of slots, the shutter 9 may consist of a glass drum having the necessary portions rendered opaque by coating or painting with lacquer. More than two wheels may be employed, the number and disposition of the slots in the shutter being varied accordingly. The invention is shown as applied to a receiver incorporating a Kerr cell 4, and in place of the shutter 9 an arrangement for diverting the beam of light as required may be employed, e.g. by means of an intermittently reciprocated mirror disposed between the lens 6 and the wheels.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE374391X | 1931-02-02 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB374391A true GB374391A (en) | 1932-06-09 |
Family
ID=6343488
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2807/32A Expired GB374391A (en) | 1931-02-02 | 1932-01-30 | Improvements in television apparatus |
Country Status (2)
Country | Link |
---|---|
GB (1) | GB374391A (en) |
NL (1) | NL33815C (en) |
-
0
- NL NL33815D patent/NL33815C/xx active
-
1932
- 1932-01-30 GB GB2807/32A patent/GB374391A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
NL33815C (en) |
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