PROJECTION LENS AND PROJECTOR
PROBLEM TO BE SOLVED: To provide a projection lens that is large and heavy and yet offers improved portability and mountability while maintaining optical quality thereof, and to provide a projector having the same.SOLUTION: A projection lens 5 includes holding members 55 that are mounted on a part o...
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Format: | Patent |
Sprache: | eng ; jpn |
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Zusammenfassung: | PROBLEM TO BE SOLVED: To provide a projection lens that is large and heavy and yet offers improved portability and mountability while maintaining optical quality thereof, and to provide a projector having the same.SOLUTION: A projection lens 5 includes holding members 55 that are mounted on a part of a lens barrel 52 protruding in a direction substantially perpendicular to an optical axis OA on the outside of the lens barrel to hold a projection lens body 50. The holding members 55 are mounted to protrude in a direction substantially parallel to the optical axis OA and to intersect a plane that includes a centroid G and is substantially perpendicular to the optical axis OA. The projection lens also includes a flange 53 for mounting the projection lens body 50 on an image projection device (projector 1), where the holding members 55 are mounted on the flange 53.SELECTED DRAWING: Figure 2
【課題】大型で重量のある投写レンズに対して、可搬性や載置性の向上と、光学品質の維持が可能な投写レンズ、およびこの投写レンズを用いたプロジェクターを提供する。【解決手段】投写レンズ5は、鏡筒52の外側で、光軸OAに対して略直交する方向へ突出する部位に設置され、投写レンズ本体50を保持する保持部材55を備えている。また、保持部材55は、光軸OAと略平行な方向へ突出して、重心Gを含み光軸OAに対して略直交する面と交差するように設置されている。また、投写レンズ本体50を画像投写機器(プロジェクター1)に装着するためのフランジ53を備え、保持部材55は、フランジ53に設置されている。【選択図】図2 |
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