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 #:
000116
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 Simple Microscope This is an efficient instrument for elementary work and is designed especially for the Model C Balopticon. It is intended for objectives of low power and has no eyepiece. The substage accord- ingly is fitted with a condenser for low power objectives, and the focusing adjustment is by diagonally cut rack and pinion only. The stage measures 90 x 80 mm and gives a distance of 42 mm from its center to the arm. The instrument is interchangeable with the projection lens and is finished in dull black to avoid reflections. The Micro-Tessars are constructed especially for projection and photomicro- graphic purposes after the formulae of the Tessar photographic anastigmats, and are capable of projecting a field approximately equal in diameter to their focal length. They are particularly desirable for projecting large sections. Achromatic Objectives The regular achromatic microscope objectives are recommended for powers of 16 mm e. f. and higher. These lenses are supplied in blackened mounts. 113