Patent Application
20070152146
1. Field of the Invention
The present invention relates to an image pickup device, and more particularly to an assembling structure for an image pickup device.
2. Description of the Prior Art
Referring to
In fact, between the lens tube 11 and the mounting base 12 is further disposed an elastic washer 17 for blocking off the powder A and preventing it from falling onto the protective glass 14.
The solid image pickup device shall be minimized in size since it is normally installed on the cell phone, PDA and etc. Assembling such small component (the elastic washer 17) is inconvenient and troublesome, therefore, the conventional structure for preventing the powder A from falling onto the protective glass 14 is not easy to be assembled.
The present invention has arisen to mitigate and/or obviate the afore-described disadvantages.
The primary objective of the present invention is to provide an assembling structure for a solid image pickup device, wherein the powder produced when the user screws the lens tube relative to the mounting base will be stuck on the adhesive material, thus preventing the powder from falling onto the protective piece.
The assembling structure for a solid image pickup device in accordance with the present invention is mounted on a substrate and comprises a mounting base, a lens tube and an adhesive material. The adhesive material is arranged on the bottom surface of an engaging recess of the mounting base. When an annular engaging portion of the lens tube is screwed in the engaging recess of the mounting base, the adhesive material is located beside the inner periphery of the annular engaging portion of the lens tube, so that powder produced when screwing the lens tube relative to the mounting base will be adhered to the adhesive material.
The present invention will become more obvious from the following description when taken in connection with the accompanying drawings, which show, for purpose of illustrations only, the preferred embodiments in accordance with the present invention.
Referring to
The substrate 20 is equipped with an image sensor 21.
The mounting base 30 is mounted on the substrate 20 and located over the image sensor 21. The mounting base 30 is defined with an engaging recess 31, and on the inner periphery of the engaging recess 31 is formed a thread structure. A light passage 32 is defined in the bottom of the engaging recess 31, and in the light passage 32 is disposed a protective piece 33.
The lens tube 40 has an annular engaging portion 41 and on the outer periphery of the annular engaging portion 41 is formed a thread structure. The annular engaging portion 41 of the lens tube 40 is to be screwed in the engaging recess 31 of the mounting base 30, and in the lens tube 40 is disposed a lens array 42.
The adhesive material 50 includes glue or double stick tape, and is arranged on the bottom surface of the engaging recess 31 of the mounting base 30 and located beside the inner periphery 43 of the annular engaging portion 41 of the lens tube 40.
For a better understanding of the first embodiment, its operation and function, reference should be made to
When the user screws the lens tube 40 relative to the mounting base 30, namely adjusting the imaging focal length of the lens array 42 inside the lens tube 40 in order to enable the optical signal of the object to be focused on the image sensor 21. The annular engaging portion 41 of the lens tube 40 is screwed in the engaging recess 31 of the mounting base 30, the powder A produced during screwing the lens tube. 40 relative to the mounting base 30 will be adhered to the adhesive material, and thus preventing the powder A falling onto the protective piece.
Referring then to
The annular engaging portion 41 of the lens tube 40 is screwed in the engaging recess 31 of the mounting base 30, and the annular flange 44 is engaged in the annular groove 34, so that the powder A produced during the process of screwing the lens tube 40 relative to the mounting base 30 will be blocked by the annular flange 42 of the lens tube 40 or will fall into the annular groove 34 of the mounting base 30, or into the space defined by the annular flange 44 of the lens tube 40 and the mounting base 30. Furthermore, the adhesive material 50 also can be used to stick the powder A. Therefore the abovementioned arrangement can produce a better effect on prevention of the powder A.
It will be noted that, in the second embodiment, the annular flange 44 of the lens tube 40 is located close to the inner periphery 43 of the end surface of the annular engaging portion 41, as shown in
While we have shown and described various embodiments in accordance with the present invention, it should be clear to those skilled in the art that further embodiments may be made without departing from the scope of the present invention.
