Projection Apparatus (1917)

Record Details:

Title:
Projection Apparatus
Date:
1917
Publisher:
Rochester, N.Y: Bausch & Lomb Optical Co.
Volume:
Bausch & Lomb Optical Co. Projection Apparatus
Leaf #:
00047
Language:
English
Collection:
Magic Lantern and Lantern Slide Catalog
Format:
Catalogs
Contributor:
Toverlantaarnmuseum Scheveningen (TOMU)
Sponsor:
A Million Pictures
Coordinator:
Media History Digital Library
Description:
This catalogue advertises various projection devices, for projection of transparent images and for the projection of opaque objects as well as film projectors. The technical workings of each apparatus are explained. The catalogue also lists projection lenses and light sources (electric light, carbon light, oxyhydrogen light), fuses, light bulbs, switches and microscopes for projection. The catalogue is richly illustrated.
Date Added:
March 28, 2024
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Bausch & Lomb Optical Company uninterrupted passage of light through to the lantern slide projection lens. The attachment is provided, of course, with an individual condensing lens, which forms the third member of the triple system for vertical projection, and with a regular quality projection lens of ljHs-inch diameter, 10-inch focus. Attachment for Projection of the Spectrum and Complementary Colors Figure 8 —Set of Accessories for Projecting Spectrum and Complementary Colors with Model D Balopticon. Figure 8 illustrates the Model D Balopticon equipped for projection of the spectrum and complementary colors. The bellows are removed and the standard, carrying an adjustable slit, attached to the lantern bed between the slide carrier support and the front standard. The accessory optical bed, carrying the rest of the accessories, is attached to the front of the regular optical bed. If the Balopti- con has the large lamp house, a set of revolving carbon holders, desirable in showing emission spectra, should be fitted to the arc lamp. Absorption and emission spectra only may be projected by using simply the adjustable slit and the prism placed before the projection lens. 44