Optic projection : principles, installation and use of the magic lantern, projection microscope, reflecting lantern, moving picture machine (1914)

Record Details:

Title:
Optic projection : principles, installation and use of the magic lantern, projection microscope, reflecting lantern, moving picture machine
Date:
1914
Author:
Gage, Simon Henry, 1851-1944
Publisher:
Ithaca, N.Y. : Comstock Publishing Company
Volume:
Optic projection : principles, installation and use of the magic lantern, projection microscope, reflecting lantern, moving picture machine
Leaf #:
000322
Language:
English
Subjects:
Lantern projection, Motion picture projection
Format:
Books
Contributor:
University of California Libraries
Sponsor:
MSN
Coordinator:
Media History Digital Library
Description:
Bibliography: p. 693-703
Date Added:
July 19, 2022
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CH. IX] PROJECTION MICROSCOPES ON THE MARKET 307 FIG. 171. NEW STYLE CONVERTIBLE BALOPTICON FOR MICROSCOPE, LANTERN-SLIDE AND OPAQUE PROJECTION, AND FOR THE PROJECTION OF LARGE TRANSPARENCIES IN A HORIZONTAL POSITION. (Cut loaned by the Bausch & Lomb Optical Co.). As shown in the picture, this instrument is designed for projecting all kinds of objects either in a vertical or in a horizontal position. For the large transparencies the object is placed on the broad plate beneath the objective. Immediately under the object is the condenser lens of 20 cm. (8 in.) diameter, thus making it possible to project X-Ray plates, brain sections, etc., 20 cm. (8 in.) in diameter. A mirror in the dark chamber directs the horizontal beam from the first element of the condenser vertically as in all projection of this kind. For the large transparencies the projection objective is in a vertical position with mirror to reflect the light to a vertical screen and to overcome the left to right inversion. FIG. 172. UNIVERSAL BALOPTICON FOR OPAQUE OBJECTS, MICROSCOPIC OBJECTS AND FOR LANTERN SLIDES OR OTHER TRANSPARENT OBJECTS IN A VERTICAL OR A HORIZONTAL POSITION. (Cut loaned by the Bausch & Lomb Optical Co.). For the opaque projection and lantern slides in a vertical position see fig. 106. For lantern slides or other transparent objects in a horizontal position the arrangement for vertical slides is pushed back, and this brings the condenser lens and plate for supporting horizontal objects over the opening. The same mirror is used for directing the beam of light upward as for the vertical slides.