Projector
AssigneeSeiko Epson Corporation
InventorsHirohisa Nakano, Kazuhiro Nishida, Masahide Tsuda
Life of this patent
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Abstract
A projection lens (46) is located at an end of an optical unit (4) of approximately planarly-viewed L-shape, the projection lens enlarging and projecting a color image combined by a cross dichroic prism of an optical device body and including a linearly-advancing barrel (46B) fixed to a head (49) formed on an optical component casing, a cam barrel (46C) provided with a lever (46A), zoom-magnification converting lenses, focus-adjusting lenses and fixed lens, the linearly-advancing barrel (46B) and the cam barrel (46C) being made of polycarbonate, where a control board is disposed above a projection lens (46) to planarly cover the projection lens (46).
Claims5
A projector, comprising:
- an electric optical device that modulates a light beam irradiated by a light source in accordance with image information;
- a projection lens that enlarges and projects the light beam modulated by the electric optical device;
- and
- a control board that controls the electric optical device in accordance with the image information,
- wherein the projection lens has a plurality of beam-condensing elements and a lens-barrel that houses the plurality of beam-condensing elements,
- wherein the control board is disposed adjacent to the projection lens, and
- wherein the lens-barrel is made of non-metal member.
Dependencies are inferred from the claim text.