Patent · US Expired

Apparatus for the line by line optical scanning of a film

US4281351A · kind A · utility

8Cited by

9References

14Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Dieter Poetsch · Ober-Ramstadt, DE
Werner Becker · Hirschhorn, DE
Ottokar Klein · Weiterstadt, DE
Rudolf Wulf · Riedstadt, DE

Key dates

Filing date	Sep 24, 1979
Grant date	Jul 28, 1981
Priority date	—
Expiry date	Sep 24, 1999

Classification

Technology area (CPC H)Electricity
CPC primaryH04N3/36
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

For the line-by-line optical scanning of a film as it passes at high speed through a scanning region, particularly to obtain television image signals, a light source directs light to a sensor. To reduce friction of the film adjacent the scanning region, two rollers or endless belts support the film at positions on the film outside the film frames. These rollers or belts replace the previously usual stationary film guide shoes adjacent the film gate. Lateral guidance of the film can be provided by rollers.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.