Journal of the Society of Motion Picture Engineers (1930-1949)

Record Details:

Title:
Journal of the Society of Motion Picture Engineers
Date:
1930-1949
Publisher:
New York, N.Y. : The Society
Volume:
Journal of the Society of Motion Picture Engineers
Leaf #:
00027
Language:
English
Collection:
Technical Journals
Format:
Periodicals
Contributor:
Prelinger Library
Sponsor:
MSN
Coordinator:
Media History Digital Library
Description:
The Journal of the Society of Motion Picture Engineers (SMPE)Êdocuments the technological progress of the film industry, highlighting technical developments in production and exhibition. Of special interest are articles about special effects, theater practices, lighting, and the introduction of the 16mm format. Initially titled "Transactions of the Journal of the Society of Motion Picture Engineers."Digitized by the Prelinger Library and the Library of Congress Motion Picture, Broadcasting and Recorded Sound Division.
Date Added:
July 19, 2022
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22 P. C. GOLDMARK [J. S. M. P. E. condenser system c\ in combination with field lens F and the main projection lens T, onto the plate of the five dissecting lenses, LI to L6. The main projection lens T produces an enlarged virtual image of the film behind the gate in the plane y-y. The five lens segments displace and project this enlarged image of the gate onto the cathode of the dissector tube, the displacement of the images corresponding to the displacement of the centers of the dissecting lenses relatively to the main optical axis of the entire system. Fig. 3(b) reveals the virtual images and the displacement of the real images by the five dissecting lenses. FIG. 4. Film scanner using dissector tube. The five lens sections are rigidly mounted on a solid metal plate and are easily adjustable with the aid of small brackets and screws holding the lenses in place. The alignment of the dissecting lenses can be carried out quickly by the following method. A reel of film of a suitable resolution chart is run through the projector while two lens sections are freed by using cardboard masks over the others. The two images thus produced on the cathode are brought into coincidence by adjusting the lens-holder and observing the monitored image on a cathode-ray tube. The other three lenses are brought into coincidence with the first pair one after the other,