Lens module and projection device
AssigneeCoretronic Corporation
InventorYii-Wen Chen
Life of this patent
Estimating the term…
Abstract
A lens module includes a lens fixing device and a base. The lens fixing device includes: a lens holder, a lens, a plurality of elastic sheets, and a shielding sheet. The lens is assembled on the lens holder. The plurality of elastic sheets is locked on the lens holder and pressed around an edge of the lens. The shielding sheet is arranged on at least one of the plurality of elastic sheets, and is located on a transmission path of an excitation light beam to prevent the excitation light beam from directly irradiating the at least one of the plurality of elastic sheets. The lens holder is assembled on the base.
Claims19
A lens module, comprising:
- a lens fixing device, comprising:
- a lens holder
- a lens, assembled on the lens holder;
- a plurality of elastic sheets, the plurality of elastic sheets being locked on the lens holder and pressed around an edge of the lens;
- and
- a shielding sheet, arranged on at least one of the plurality of elastic sheets, and located on a transmission path of an excitation light beam to prevent the excitation light beam from directly irradiating the at least one of the plurality of elastic sheets;
- and
- a base, wherein the lens holder is assembled on the base.
A lens module, comprising:
- a lens fixing device, comprising:
- a lens holder
- a lens, assembled on the lens holder;
- a washer, disposed between the lens and the lens holder;
- a plurality of elastic sheets, the plurality of elastic sheets being locked on the lens holder and pressed around an edge of the lens;
- and
- a base, wherein the lens holder is assembled on the base.
A projection device, comprising:
- an illumination system, configured to provide an illumination light beam;
- a light valve, arranged on a transmission path of the illumination light beam to convert the illumination light beam into an image light beam;
- and
- a projection lens, arranged on the transmission path of the image light beam,
- wherein the illumination system comprises:
- a light source configured to provide an excitation light beam;
- a lens module, arranged on a transmission path of the excitation light beam, comprising:
- a lens fixing device, comprising:
- a lens holder;
- a lens, assembled on the lens holder and arranged on the transmission path of the excitation light beam;
- and
- a plurality of elastic sheets, the plurality of elastic sheets being locked on the lens holder and pressed around an edge of the lens;
- and
- a shielding sheet, arranged on at least one of the plurality of elastic sheets, and located on a transmission path of an excitation light beam to prevent the excitation light beam from directly irradiating the at least one of the plurality of elastic sheets;
- and
- a base, wherein the lens holder is assembled on the base;
- and
- a wavelength conversion device, arranged on the transmission path of the excitation light beam and configured to convert the excitation light beam into a converted light beam, and emitted the illumination light beam including the excitation light beam and the converted light beam.
Dependencies are inferred from the claim text.