![]() Sales exploded.ĭigital storage media replaced photograph film slides by the early 2000s. In 1965, Kodak introduced its carousel slide projector, purchasing the patent from inventor David E. Slide projection also was widely used in business, education, and institutional settings. Kodak launched its first slide projector in 1939.ģ5mm slide projectors gained widespread acceptance for home entertainment purposes during the 1950s. The 35mm slide (1 3/8 inch by 15/16-inch film in a 2-inch square mount) was invented in 1935. The Kodachrome 35 mm slide was introduced a year later. Kodak perfected Kodachrome, its three-color slide process, in 1935. ![]() Agfa and Dufaycolor, an English firm, applied the method to projection slides. The Lumiere Autochrome process, the earliest commercial photograph coloring process, involved potato starch grains to color the photograph, was patented in 1903. The glass slides measured 3 1/2 inches by 4 inches. Brothers Fredrick and William Langenheim developed the Hyalotpe in 1850. The first lantern slides containing transparent positive photographic images on glass that could be projected were introduced in the early 1850s. One type featured a stationary slide and a second slide that could be moved behind it. ![]() Various types of mechanical slides were invented. The lantern slide projector could be used to create moving images. Initially, the images on the slides were hand-painted. The lantern slide or Laterna Magica, an early type of image projector, was developed in the 17th century. ![]()
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