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US 2009/0268317 A1Published application
Adjustable lens mounting assembly
AssigneeSTMicroelectronics (Research & Development) Limited
InventorsMark Nairn, David Mcardle
Life of this patent
Estimating the term…
Abstract
An adjustable lens mounting assembly has a detent system which provides a defined vertical movement of a lens per detent index. A calibration of a lens during assembly of an image sensor is therefore achieved with no moving parts, and generation of foreign material is minimized. Furthermore, gluing of the components can be dispensed with.
Claims24
Apparatus including a mounting assembly, comprising:
- a lens barrel adapted to hold a lens or a lens assembly;
- a carriage assembly receiving the lens barrel;
- a set of cooperating screw threads provided with the lens barrel and a portion of the carriage assembly to allow rotation of the lens barrel with respect to the carriage assembly to enable the lens or lens assembly to be moved along an optical axis and adjust focus;
- one of said carriage and said lens barrel having a detented surface comprising a plurality of discrete recesses, the other of said carriage and said lens barrel having at least one first projection biased against said detented surface, with said at least one first projection engaging with said plurality of discrete recesses of the detented surface to define a plurality of first stable rotational positions of said lens barrel with respect to said carriage assembly.
1 more element
Apparatus, comprising:
- a disk shaped lens holder barrel;
- a carriage having a central bore which receives the disk shaped lens holder barrel;
- a detented surface comprising a plurality of discrete recesses extending around an inner surface of the central bore;
- a first projection from the lens holder barrel engaging with said detented surface;
- a second projection from the lens holder barrel engaging with the detected surface;
- the first projection and second projection being angularly displaced from each other such that when one of the first and second projections engages a discrete recesses of the detented surface the other of the first and second projections engages a ridge between adjacent discrete recesses.
3 more elements
Apparatus, comprising:
- a cylindrical lens holder barrel;
- a carriage having a central bore which receives the cylindrical lens holder barrel;
- a detented surface comprising a plurality of discrete recesses extending around an inner surface of the central bore and a ridge surface between adjacent recesses;
- a first set of projections extending radially from the lens holder barrel which engage with said detented surface;
- a second set of projections extending radially from the lens holder barrel which engage with the detected surface;
- the first set of projections engaging corresponding discrete recesses of the detented surface at a first angular position where the second set of projections engage ridge surfaces, and the second set of projections engaging corresponding discrete recesses of the detented surface at a second angular position where the first set of projections engage ridge surfaces.
3 more elements
Dependencies are inferred from the claim text.