Motion picture projection : an elementary text book (1928)

Page scan 000941 from Motion picture projection : an elementary text book

Record Details:

Title:
Motion picture projection : an elementary text book
Date:
1928
Publisher:
New York : Technical Book Company
Volume:
Motion picture projection : an elementary text book
Leaf #:
000941
Language:
English
Subjects:
Motion Pictures, Motion Picture Technology
Collection:
Books
Format:
Books
Contributor:
Niles Essanay Silent Film Museum
Sponsor:
Media History Digital Library
Coordinator:
Media History Digital Library
Date Added:
May 08, 2025
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MOTION PICTURE PROJECTION 935 5. REFLECTOR IN THE LAMPHOUSE Insert the silvered glass spherical reflector (H) in its holder (Q) (Fig. 388). 6. HOW TO PUT THE STEREOPTICON OR PLANO-CONVEX CONDENSING LENSES IN STEREOPTICON CONDENSER MOUNT Remove the stereopticon condenser holder (P1) from the stereopticon condenser mount (P) by loosening the clamping screw (P-4) . Then remove the spring retaining ring (P-2) and the Fig. 397 Parts of Lamp Socket spacing ring (P-3) from the condenser holder (P-l). Take out the two plano-convex condenser lenses (used with the former carbon-arc equipment), which are usually of 6i/2-in. and 7i/2-in. focus. Place the thin one or the 7%-in. focus lens in the holder (P-l) with the flat side of the lens towards the stereopticon condenser dowser (P-5) ; then insert the spacing ring (P-3) and place the thick or the 6i/2-in. focus lens on top of this with its flat side uppermost. Hold the condensing lenses in place with the spring retaining ring (P-2). The condensing lenses should now