Apparatus for measuring the position of a light source...

Details Apparatus for measuring the position of a light source... Apparatus for measuring the position of a light source...

G - Physics

01

B

316/19

G01B 11/00 (2006.01) H01J 9/227 (2006.01) H01J 9/42 (2006.01)

Patent

CA 1258088

Abstract of the Disclosure Apparatus for Measuring the Position of a Light Source Disposed Inside a Lighthouse For measuring the position of a light source (2) in- side a lighthouse as used in the manufacture of phos- phor screens of color picture tubes, the invention proposes a measuring apparatus. This apparatus, among others, comprises a base plate (6) and two optical projection devices (12, 13) which are directed on to the light source, and which each contain at least to position diodes (PD). In an evaluating circuit (18) connected thereto, there is ascertained the position of the light source (2), and the result is fed to a display device (19). (Fig. 1)

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