Focusing assembly and projection module

TWM687763UActive Publication Date: 2026-09-21MAINLAND CHINA KUNSHAN YANGHAO OPTOELECTRONICS CO LTD
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Patent Information

Application Number
TW115204245
Authority / Receiving Office
TW · TW
Patent Type
Utility models
Current Assignee / Owner
Priority Date
2026-05-06
Filing Date
2026-05-12
Publication Date
2026-09-21
Estimated Expiration
2036-05-11

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Abstract

A focusing assembly, suitable for a lens module, includes a focusing ring and an adapter. The inner edge of the focusing ring includes multiple engaging portions. The adapter is disposed between the focusing ring and the lens barrel of the lens module. The adapter includes a base plate and a flange connected to the base plate. The flange is located on the side near the focusing ring, and the outer wall of the flange has multiple slots corresponding to the multiple engaging portions. The base plate has multiple engaging holes corresponding to the multiple slots and penetrating the base plate. The multiple engaging portions of the focusing ring are respectively engaged with the multiple slots and multiple engaging holes of the adapter, so that the focusing ring is positioned on the outer wall of the flange. The adapter has multiple through holes penetrating the outer and inner walls of the flange, and multiple locking fasteners are used to pass through at least a portion of the multiple through holes and the multiple locking holes of the lens barrel, so that the lens barrel is fixed to the inner wall of the adapter.
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Claims

1. A focusing assembly for a lens module, the focusing assembly comprising a focusing ring and an adapter, wherein: The focusing ring has an inner edge including multiple engaging portions; the adapter is disposed between the focusing ring and a lens barrel of the lens module, the adapter including a base plate and a flange connected to the base plate; the flange is located on the side near the focusing ring, and an outer wall of the flange has multiple slots corresponding to the multiple engaging portions, the base plate has multiple engaging holes corresponding to the multiple slots and penetrating the base plate, the multiple engaging portions of the focusing ring respectively engaging with the multiple slots and the multiple engaging holes of the adapter, so that the focusing ring is disposed on the outer wall of the adapter; the adapter has multiple through holes penetrating the outer wall and an inner wall of the flange, the multiple through holes being located on the flange at predetermined intervals, the inner wall of the flange of the adapter surrounding the lens barrel, and multiple fasteners for jointly passing through at least a portion of the multiple through holes and the multiple locking holes of the lens barrel, so that the lens barrel is fixed to the inner wall of the adapter.

2. The focusing assembly as described in claim 1, wherein, The plurality of through holes includes at least a plurality of first through holes and a plurality of second through holes. The flange has an end face at the connection to the substrate. Each of the plurality of first through holes has a first distance from the end face, and each of the plurality of second through holes has a second distance from the end face. The first distance is not equal to the second distance.

3. The focusing assembly as described in claim 2, wherein, Each of the plurality of first through holes has a first mark on one side, and each of the plurality of second through holes has a second mark on one side, the first mark being different from the second mark.

4. The focusing assembly as described in claim 3, wherein, The first and second markings are disposed on a plane of the outer wall of the flange.

5. The focusing assembly as described in claim 2, wherein, Each of the plurality of first through holes and each of the plurality of second through holes are offset from each other in the circumferential direction of the flange.

6. The focusing assembly as described in claim 2, wherein, The plurality of through holes, at least a portion thereof, are all of the plurality of first through holes or all of the plurality of second through holes.

7. The focusing assembly as described in claim 1, wherein, Each of the multiple engaging parts has a hook on the side of the inner edge away from the focusing ring. The hook passes through the corresponding engaging hole and engages with the side of the base plate of the adapter away from the focusing ring.

8. The focusing assembly as described in claim 1, wherein, The preset arc of the plurality of through holes on the flange is 360 / N degrees, where N is a positive integer greater than or equal to 2.

9. The focusing assembly as described in claim 1, wherein, Each of the multiple engaging parts is a protruding rib extending parallel to the engaging direction.

10. A projection module comprising a light source module, an optical engine module, a lens module, and a focusing assembly as described in any one of claims 1 to 9, wherein: The light source module is used to provide an illumination beam; the optical engine module includes at least one light valve disposed on the transmission path of the illumination beam to convert the illumination beam into an image beam; the lens module is disposed on the transmission path of the image beam to project the image beam from the optical engine module out of the projection module; and the focusing component is used to adjust a focal length of the lens module.