Digital camera module having linear voice coil actuator
First Claim
1. A digital camera module comprising:
- a lens module configured for transmitting an image;
an image sensor configured for receiving the image transmitted from the lens module and converting the image from a light signal form into an electronic signal form; and
a linear voice coil actuator configured for driving the image sensor to move so as to properly receive the image transmitted from the lens module;
wherein the linear voice coil actuator comprises;
an elongated soft magnetic core;
a tubular permanent magnet receiving the elongated soft magnetic core therein;
a coil surrounding and moveable relative to the elongated soft magnetic core; and
a sliding holder having;
a fixing portion received in the tubular permanent magnet and fixedly coupled to the coil,a driving portion on which the image sensor is attached, the driving portion being configured for driving the image sensor to move, anda connecting portion interconnecting the fixing portion with the driving portion.
1 Assignment
0 Petitions
Accused Products
Abstract
A digital camera module (100) includes a lens module (110), an image sensor (120) and a linear voice coil actuator (130). The lens module further includes a lens set (111), an infrared cut filter (112), a spacer set (113) and a barrel (114). The image sensor is a CCD or a CMOS. The linear voice coil actuator includes an elongated soft magnetic core (131), a tubular permanent magnet (132) positioned parallel to the axis of the core, a sliding holder (133) and a coil (134) attached to the sliding holder and positioned to interact with the permanent magnet along the axis of the core. The digital camera module further includes a servo-controller (140) for controlling the movement of the linear voice coil actuator.
-
Citations
20 Claims
-
1. A digital camera module comprising:
-
a lens module configured for transmitting an image; an image sensor configured for receiving the image transmitted from the lens module and converting the image from a light signal form into an electronic signal form; and a linear voice coil actuator configured for driving the image sensor to move so as to properly receive the image transmitted from the lens module; wherein the linear voice coil actuator comprises; an elongated soft magnetic core; a tubular permanent magnet receiving the elongated soft magnetic core therein; a coil surrounding and moveable relative to the elongated soft magnetic core; and a sliding holder having; a fixing portion received in the tubular permanent magnet and fixedly coupled to the coil, a driving portion on which the image sensor is attached, the driving portion being configured for driving the image sensor to move, and a connecting portion interconnecting the fixing portion with the driving portion. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
-
-
13. A digital camera module comprising:
-
a lens module configured for transmitting an image; an image sensor configured for receiving the image transmitted from the lens module and converting the image from a light signal form into an electronic signal form; and a linear voice coil actuator comprising; a permanent magnet defining a cavity therein; an elongated soft magnetic core received in the cavity, the soft magnetic core defining an axis; a coil surrounding the soft magnetic core, the coil being received in the cavity and positioned to interact with the permanent magnet along the axis of the soft magnetic core; and a sliding holder fixedly coupled to the coil, the image sensor being attached on the sliding holder, the sliding holder capable of moving along the axis of the soft magnetic core by a magneto-motive force thereby driving the image sensor closer to or further away from the lens module. - View Dependent Claims (14, 15, 16, 17)
-
-
18. A digital camera module comprising:
-
a lens module configured for transmitting an image; an image sensor configured for receiving the image transmitted from the lens module and converting the image from a light signal form into an electronic signal form; and a linear voice coil actuator comprising; a permanent magnet defining a cavity therein; an elongated soft magnetic core set received in the cavity, the soft magnetic core set defining an axis; a coil surrounding the soft magnetic core set, the coil being received in the cavity and positioned to interact with the permanent magnet along the axis of the soft magnetic core set; and a sliding holder fixedly coupled to the coil, the image sensor being attached on the sliding holder, the sliding holder capable of moving along the axis of the soft magnetic core set by a magneto-motive force thereby driving the image sensor closer to or further away from the lens module. - View Dependent Claims (19, 20)
-
Specification