Journal of the Society of Motion Picture and Television Engineers (1950-1954)

Page scan 000508 from Journal of the Society of Motion Picture and Television Engineers

Record Details:

Title:
Journal of the Society of Motion Picture and Television Engineers
Date:
1950-1954
Publisher:
Easton, Pa. : The Society
Volume:
Journal of the Society of Motion Picture and Television Engineers
Leaf #:
000508
Language:
English
Collection:
Technical Journals
Format:
Periodicals
Contributor:
Prelinger Library
Sponsor:
MSN
Coordinator:
Media History Digital Library
Date Added:
July 19, 2022
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1950 NEW AMERICAN STANDARDS 503 American Standard Location and Size of Picture Aperture of 8-Millimeter Motion Picture Projectors ASA Rcf. V. S Pat. OH Z22.20-1950 •UDC 778.55 Page 1 of 2 Pages This standard applies to 8-mm. motion picture projectors. It covers the size and shape of the picture aperture and the relative positions of the aperture, the optical axis, the edge guide, and the film registration device. The notes are a part of this standard. THROUGH OPTICAL AXIS OF r^! I % frvv « c :ts^: ..i *• x-___ ___ .»..** i^j =s« ,-»—.•; l^i FILM REGISTRATION DEVICE DRAWING SHOWS ARRANGEMENT AS SEEN FROM INSIDE PROJECTOR LAMPHOUSE LOOKING TOWARD THE LENS Dimension Inches Millimeters Note A (measured perpen dicular to edge of film) 0.1 72 ±0.001 4.37 ± 0.03 B (measured parallel to edge of film) 0.1 29 ±0.001 3.28 ± 0.03 1 C 0.205 ± 0.002 5.21 ± 0.05 3 Ko 0.050 ± 0.005 1.27 ±0.1 3 4 Ki 0.1 00 ±0.005 2.54 ±0.1 3 4 Ki 0.249 ± 0.005 6.32 ±0.1 3 4 Ks 0.398 ± 0.005 10.11 ±0.13 4 K4 0.547 ± 0.005 13.89 ±0.1 3 4 Ks 0.696 ± 0.005 17.68 ±0.1 3 4 Ki 0.846 ± 0.005 21. 49 ±0.13 4 KT 0.995 ± 0.005 25.27 ±0.1 3 4 Kc 1.1 44 ±0.005 29.06 ±0.1 3 4 R 0.010 maximum 0.25 maximum 1 Approved March 14, 1950 by the American Standards Association Incorporated Sponsor: Society of Motion Picture and Television Engineers Incorporated •Urmrrsll Decimal CUuificilioii Copyright 1950, by American Standard Assn., Inc., reprinted by permission of the copyright holder.