Silma, Italy → Bauer and Rollei ceased production.Rollei, Germany (1960–2007): " Rolleiscop", " Rolleivision" → Franke & Heidecke, Germany (2007–2009): "Rolleivision" → DHW Fototechnik, Germany (2009–2015): "Rolleivision" ceased production.Queen, Germany: "Automat" ceased distribution.Prestinox, France → Plawa Condor (1969–?) ceased production.Pentacon, Germany: "Aspectar", "Malicolor" ceased production.Ernst Plank, Germany: "Noris", "Trumpf" ceased production.Minox, Germany: "Minomat" ceased production.Malinski, Germany: "Prokyon", "Malicolor" → Pentacon.
Liesegang, Germany: "Fantax", "Diafant", "Fantimat" ceased production.Leitz, Germany (1958–): "Prado" → Leica Projektion GmbH Zett Gerätewerk, Germany (1990–2004): " Pradovit", " Pradovit RT" → Leica Camera, Germany (2004–2006): "Pradovit" ceased production.Kindermann, Germany: "Diafocus" → Leica.Foto Quelle, Germany: "Revue" ceased distribution.VEB Feinmess, Germany ceased production.Eastman Kodak (–2004): "Carousel-S", " Ektagraphic", " Ektapro" → Leica.VEB DEFA, Germany: "Filius"→ VEB Gerätewerk Friedrichshagen: "Filius" ceased production.Braun Foto Technik, Germany: " Paximat", " Multimag" → Reflecta.Braun AG, Germany: "D", "PA" ceased production.Bell & Howell / TDC, US: "Headliner" ceased production.Bauer, Germany → Bosch ceased production.List of known manufacturers of slide projectors: Large-format slide projectors for use on stages, at large events, or for architectural and advertising installations where high light output is needed.Stereo slide projectors project two slides simultaneously with different polarizations, making slides appear as three-dimensional to viewers wearing polarizing glasses.Single slide projectors (manual form).This form of projection also avoids the audience interrupting the light stream by casting their shadows on the projection or by bumping into the projector. Alternatively, the image may be projected onto a translucent "rear projection" screen, often used for continuous automatic display for close viewing. Light passes through the transparent slide and lens, and the resulting image is enlarged and projected onto a perpendicular flat screen so the audience can view its reflection. This glass transmits visible wavelengths but absorbs infrared. reflector and "condensing" lens to direct the light to the slideĪ flat piece of heat-absorbing glass is often placed in the light path between the condensing lens and the slide, to avoid damaging the latter.electric incandescent light bulb or other light source (usually fan-cooled).It included a dissolving views apparatus. A continuous-slide lantern was patented in 1881.
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