Balopticon opaque and lantern slide projector
Date: 1900-1950
Inventory Number: 1997-1-1884
Classification: Lantern Slide Projector
Subject:
Maker: Bausch & Lomb Optical Company (1853-present)
Cultural Region:
Place of Origin:
Dimensions:
74 × 28.3 × 69.9 cm (29 1/8 × 11 1/8 × 27 1/2 in.)
Accessories: slide holder, sheet holder [opaque], missing lantern slide lens [opaque], variable sheet holder, electrical cord attached
Description:
A projector-like device consisting of a rectangular body with two bracket-shaped feet (one on front, one on back). It includes a slide carrier in front and a projection lens protruding horizontally out of a triangular extension (for a mirror) on top of body.
It is made of sheet metal finished with a dull black lacquer. The slide carrier has a wooden frame provided with an elevated fitting device.
Many balopticons are regularly supplied with a Mazda electrical lamp (missing in this one), and a balo projection lens. The electrical cord and fixture are present.
It is made of sheet metal finished with a dull black lacquer. The slide carrier has a wooden frame provided with an elevated fitting device.
Many balopticons are regularly supplied with a Mazda electrical lamp (missing in this one), and a balo projection lens. The electrical cord and fixture are present.
Signedplaque on the back: BAUSCH & LOMB OPTICAL CO. / ROCHESTER, N.Y., U.S.A.
Inscribedon plaque, below signature: MAX LAMP WATTS EACH 500 VOLTS 115 AMPS 10 CYCLES 50-60 TYPE 41-23-75 BALOPTICON SERIAL NO. RE594 CSA APP. NO. 982; 2nd Label : BLOWER FOR AC ONLY
FunctionA balopticon is an early to mid- twentienth century device that is the transitional form between a magic lantern and a modern overhead projector. It was used for placing objects, such as prints or other opaque images, or transparencies on the balopticon. Then, the image would be projected on a wall or screen for viewing, to trace drawings, or to otherwise copy the image.