Auto focus-zoom actuator or camera module contamination reduction feature with integrated protective membrane

摘要

A camera module includes a lens system, an image sensor, and an actuator. The actuator is fixed relative to the image sensor, and the actuator moves the lens system relative to the image sensor to achieve focus. Components that move relative to each other result in gaps or spaces between the components, an in particular there is a gap between the lens system and the actuator. Such a gap provides a traveling path for foreign material, or particulates, to enter the camera module and reach the image sensor, or other intermediate optical components between the lens system and the image sensor. A camera contamination reduction apparatus is implemented as a protective membrane that prevents foreign material from reaching the internal optical components through the traveling path.

主权项

1. An imaging device comprising:
a lens system comprising a first lens surface; an image sensor aligned to receive light from the lens system; an actuator system coupled to the first lens surface, wherein the actuator system is configured to move the first lens surface relative to the image sensor, further wherein the actuator system includes an opening aligned with the first lens surface such that the first lens surface is exposed to an external environment; and a protective membrane coupled to the first lens surface and to a second surface that is fixed relative to the image sensor, wherein the protective membrane is configured to filter particulates and to be expandable and contractible to accommodate movement of the first lens surface relative to the second surface.