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 #:
000127
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 Co m p a n y Screens Ordinary sheeting, or common cloth, is too translucent to furnish a satisfactory screen for projection work. Our screens are all made of heavy cloth, specially prepared and as nearly opaque as possible. They are mounted on spring rollers. Larger sizes will be quoted upon request. Aluminum Screens These screens are made of heavy material with a metallic surface. They give a much more brilliant image than the ordinary screen and are recommended in all cases, but especially will their superiority be noted in projecting opaque objects, microscopic specimens and in all work requiring brilliant illumination. Owing to their narrower field, however, due to the high reflecting surface, they should be used only when the audience can be seated within an included angle of 60 degrees from the center of the screen. Sateen Screens These screens are supplied for portable outfits. Sateen is as nearly opaque and highly reflecting a material as can be obtained, which at the same time is suitable for packing in a case. These screens are provided with eyelets for stretching and have reinforced borders. 124