General Electric GS-028 Projector Lens 1.5:1 Throw Ratio Large Venue w/ Caps

General Electric GS-028 Projector Lens 1.5:1 Throw Ratio Large Venue w/ Caps

The General Electric GS-028 is a fixed-throw projection lens with a 1.5:1 throw ratio, housed in a sturdy black cylindrical bayonet-mount barrel. It is designed to produce a focused, full-size image when the projector is positioned at a moderate distance from the screen — roughly 1.5 feet of throw distance for every 1 foot of image width. Both the front and rear lens caps are included.

Specifications & What's Included

• Model: GS-028
• Brand: General Electric
• Throw Ratio: 1.5:1
• Lens Mount: Bayonet / twist-lock cylindrical housing
• Glass Elements: Multi-element with anti-reflection coating (red-tinted coating visible)
• Country of Manufacture: Japan (per label on housing)
• Includes: Front lens cap and rear lens cap

Applications

Projection lenses like the GE GS-028 were used in high-output slide and video projectors deployed in large-venue environments — auditoriums, conference centers, training rooms, and lecture halls — where the projector needed to be placed at a controlled distance from the screen. A 1.5:1 throw ratio is considered a moderate standard throw, making this lens suitable for medium-to-large rooms where the projector sits roughly in the middle of the space rather than at the very back or very front. General Electric produced projector optics for professional AV and educational markets, and lenses of this type were commonly found in GE-branded or compatible large-format projectors from the 1970s through the 1980s. Collectors and AV technicians restoring or maintaining period-correct GE projection systems are the primary buyers for this type of optic today.