MULTI-MODE CAMERA MODULE

摘要

Camera module with switchable light filters includes a lens module, a bearing rotating device, a visible light filter, and an infrared light filter. The bearing rotating device includes a rotating shaft, at least one guiding stick, and a bearing plate. The rotating bearing plate holds the two filters and defines an arcuated guiding slot. The circle center of the arcuated guiding slot is the rotating shaft. A visible light filter and an infrared light filter are switchable, their movement being governed by the guiding stick and the guiding slot, to respective alignment with an optical axis of the lens module. The camera module can rotate the bearing plate to switch the infrared filter for the visible filter where the acquisition of infrared light is required.

主权项

1. A camera module comprising:
a lens module including at least one lens, a lens barrel to receive the at least one lens, and a lens holder, the lens holder comprises a base portion and a barrel portion located on the base portion, the barrel portion has a first surface located at the object side, the first surface defines a first positioning blind hole and two second positioning blind holes; a visible light filter; an infrared light filter; and a bearing rotating device including a rotating shaft, at least one guiding stick to guide the rotation angle of the rotating shaft, and a bearing plate to rotate with the rotating shaft;
the rotating shaft and the at least one guiding stick are positioned on the lens module and configured to support the bearing plate;the bearing plate defining a first positioning hole, an arcuated guiding slot and two receiving apertures, the arcuated guiding slot is located at a circle with a circle center at the center of the rotating shaft;the at least one guiding stick and the guiding slot are mated to guide the rotation angle of the bearing plate, each of the two receiving apertures having a geometry center located at a circular path with a center of the circle at the center of the rotating shaft; wherein the visible light filter is received in one of the two receiving apertures and the infrared light filter is received in another one of the two receiving apertures; wherein one of the two receiving apertures is aligned with the optical axis of the lens when the bearing plate is rotated to the position of the at least one guiding stick.