Miniature camera aperture shutter device

Abstract

An aperture shutter device of miniature camera includes a lens assembling body combined by more than one lens for obtaining images of the object to be picked-up; an image sensor for converting images getting to electric power signals; and an exterior circuit part of the image sensor. The aperture shutter device is composed of a base which has a plurality of narrow and long holes and has a light transmission hole in the center part; a cover, wherein, the center part is provided with a light transmission hole, and coils for controlling work of aperture and shutter are installed at one side of the cover; a plurality of shutter baffles which execute axial center rotary in the reciprocal crossing direction, to switch on / off the light transmission hole; a chaining part setting up a support bearing at the base, which allows the shutter baffles to execute axial center rotary; and an aperture shutter drive part which installs magnet at one side, uses the electromagnetic force between the coils and the magnet to have a straight reciprocating motion along the narrow and long of the base, taking the center of the chaining section as the reference, so as to drive the chaining section. The present invention can improve image quality of photograph, and have the features of miniaturization and low-consumption.

Description

technical field [0001] The invention relates to an aperture shutter device for a small camera installed on a portable terminal, in particular to adjusting the intensity of light through a mechanical shutter and aperture to achieve image quality improvement, miniaturization, and low power consumption, and is suitable for portable terminals Aperture-shutter device for compact cameras. Background technique [0002] Recently, with the development of communication technology and data information processing technology, the technology of portable terminals with various functions such as information processing, communication, and image information input and output is changing day by day. Examples include a PDA (personal digital assistant) having a digital camera and a communication function, a mobile phone having a digital camera and a PDA function, and the like. Due to the development and progress of digital camera technology and information storage capability, installing a high-e...

AI Technical Summary

Problems solved by technology

Due to the large number of accessories used in the existing common electronic actuator (magnetic actuator), it is limited in the increase of displacement due to the limitation of price and volume.

Because it only uses open / close drive, it cannot achieve the same function as the existing mechanical aperture

[0016] In addition, when moving the movable part using a rotary motion driver such as a stepping motor, since gears are used in the power transmission process, the number of parts is large and the structure is complicated.

In addition, there are also disadvantages such as slow response speed, friction and noise in the gear part.

When adopting the mechanical shutter and aperture driver in the above way, because of the complex structure, it is difficult to manufacture a low-cost driver, and the miniaturization is also limited by the large size.

Images