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 #:
00016
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 For Large Specimens We have increased our facilities for projecting large objects placed horizontally by using the same principle for the construc- tion of an especially large apparatus which enables one to project X-ray plates, brain sections or transparencies of eight inches or less in diameter, without first reducing them. This apparatus is designed for the Convertible Balopticon page (68) and is described and illustrated under that model. Projection with Polarized Light For general demonstrations with polarized light, in lectures on physics for instance, we recommend a Projection Polariscope which, being an adaptation of the apparatus first described by Delezenne, is really a Norrenberg apparatus with an additional mirror for the purpose of keeping the axis of the polarization apparatus parallel to the axis of projection. The diagram illustrates the scheme as used with convergent light for the purpose of showing interference figures, etc. The light coming from the light source is made parallel by a triple condensing system and strikes the silvered glass mirror, M, under an angle of incidence of 57°. From there it is reflected under 13