Lens frame, lens holding device, and projector

摘要

A lens frame configured to hold a lens of an optical system of a projector comprising: a holder being formed along the periphery of the lens, holds the lens which is inserted by an elastic force of the frame main body, the holder includes a first holding portion configured to hold a peripheral end surface of the lens, and a second holding portion configured to hold a luminous flux incidence surface and luminous flux exit surface of the lens.

主权项

1. A lens frame configured to hold a lens of an optical system of a projector, the lens having a luminous flux incidence surface configured to intersect an illumination optical axis of luminous flux emitted from a light source of the projector, a luminous flux exit surface opposite the luminous flux incidence surface, and a peripheral end surface configured to face radially outward relative to the illumination optical axis, the lens frame comprising:
a frame main body configured to substantially radially surround the peripheral end surface of the lens relative to the illumination optical axis, the frame main body including a holder that is substantially formed along the peripheral end surface of the lens, the holder being configured to hold the lens which is inserted by an elastic force of the frame main body, wherein:
the holder includes a first holding portion configured to hold a peripheral end surface of the lens, and a second holding portion configured to hold a luminous flux incidence surface and luminous flux exit surface of the lens;the frame main body includes an opening extending through a portion of the frame main body, the opening being configured to extend away from a portion of the peripheral end surface of the lens such that the portion of the peripheral end surface of the lens is not radially surrounded by the frame main body relative to the illumination optical axis; andthe frame main body has a fixing portion, and the lens is fixed to the holder of the frame main body by fixing the fixing portion to a housing case of the projector such that deformation of the lens frame is suppressed, the lens being fixed to the holder by an action of an elastic force of the frame main body.