Small form factor camera module with mechanical iris and shutter
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A camera, small-scale technology, applied in the direction of camera, camera body, shutter, etc., can solve the problems of complex structure, slow response speed, gear unit friction and noise
Inactive Publication Date: 2006-11-01
LG ELECTRONICS INC
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Problems solved by technology
therefore requires the use of multiple parts, resulting in a complex structure
[0018] In addition, the slow reaction speed and the friction and noise of the gear unit are also disadvantages
If the above method is used for the mechanical shutter and aperture actuator, it will be difficult to produce an inexpensive actuator due to its complex structure, and there is also a limit in reducing the size
Method used
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Embodiment 1
[0077] Example 1 is the same.
[0078] Therefore, the operation of Embodiment 2 is the same as that of Embodiment 1.
[0079] Figure 9 Various shapes of shutter slits are shown, among which the uppermost one is the shutter slit 27 in Embodiment 1, and the lower ones are shutter slits 34, 35 and 36 in Embodiments 3, 4 and 5, respectively.
[0080] First, for the shutter slit 27 in Embodiment 1, the ratio of the movement of the shutter actuator 26 to the horizontal movement of the aperture portion 24 in order to open and close the optical path is 1:1.
[0081] Furthermore, for the shutter slit 34 in Embodiment 3, the ratio of the movement of the shutter actuator 26 to the horizontal movement of the aperture portion 24 in order to open and close the optical path is 1:2.
Embodiment 4
[0082] The shutter slit 35 in Embodiment 4 is made convex, whereby the horizontal movement of the aperture portion 24 for opening and closing the optical path gradually decreases as the movement of the shutter actuator 26 increases.
[0083] Contrary to Embodiment 4, the shutter slit 36 in Embodiment 5 is made concave, whereby the horizontal movement of the aperture portion 24 for opening and closing the optical path gradually increases as the movement of the shutter actuator 26 increases.
[0084] In addition, the shutter slit 27 may be formed in a combination of a linear shape and a circular shape.
[0085] Figure 10 is a perspective view of a light quantity adjusting device according to Embodiment 6 of the present invention, Figure 11 is a bottom view of the bottom plate 28 according to Embodiment 6 of the present invention, Figure 12 is an exploded perspective view of a light adjusting device according to Embodiment 6 of the present invention.
[0086] Similar to E...
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Abstract
The present invention relates to a small form factor camera module, more particularly, to a small form factor camera module having a mechanical iris and a shutter not only to improve an image quality by adjusting an amount of a light entering an image sensor but also to remarkably reduce a volume of the entire system by using an electromagnetic force and therefore to be applied to various applications which require for a small form factor camera module including a handheld terminal and so on, contrary to the existing electronic shutter. In order to obtain the object of the present invention, the small form factor camera module having a lens assembling body consisting of more than one lens for obtaining an image of an object, an image sensor for transforming the image passed through the lens into an electric signal and a peripheral circuit unit connected with the image sensor, further comprising: a light amount adjustment device capable of adjusting a light amount of an image reaching an image sensor through the lens assembling body by controlling an incidence area and an incidence time.
Description
technical field [0001] The present invention relates to a small form factor camera module, and more particularly, to a small form factor camera module having a mechanical aperture and shutter capable of improving not only the image by adjusting the amount of light entering the image sensor quality, and can significantly reduce the size of the entire system by utilizing electromagnetic force, so it can be used in various occasions that require a small camera module with a handheld terminal. [0002] According to the current development of communication technology and digital information processing technology, a technology for a handheld terminal having various functions such as information processing, calculation, communication, and graphic information input / output functions has been developed. [0003] For example, a personal digital assistant (PDA) has digital camera and communication functions, while a handheld phone has digital camera and PDA functions. The current trend i...
Claims
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Application Information
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