JP3188026U - Micro lens focus module frame cover structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a frame cover structure of a microlens focus module. SOLUTION: A frame cover structure of a lens focus module is provided with a two-layer stepped structure 61 which is reduced inward and extended upward on an outer edge portion of an upper surface of the frame cover 60, and an elastic element 50 directly covers the frame. It was designed to be combined with the outermost edge of the innermost edge of the 60, and to retain the upper surface of the frame cover 60 and the active space for lens movement. This saves one packing over well-known techniques and reduces module manufacturing costs and assembly steps. [Selection diagram] Fig. 5

Description

  The present invention relates to a frame cover structure of a kind of microlens focus module, and in particular, by using the two-layer structure of the frame cover in the microlens autofocus module, an active space in which the lens can move on the upper elastic element and the upper surface is provided. It relates to what was held.

  Due to advances in science and technology, the volume of digital cameras has been considerably reduced, and many small electronic devices such as mobile phones now have almost built-in digital shooting functions, both of which are due to the modularization and microfabrication of imaging lenses. . Among the various types of autofocus drive structures provided in the microlens, the most popular at present is the voice coil motor (VCM), which has a small volume, uses less power, is accurate in movement, and is inexpensive. It is suitable for short-distance driving of micro-type lens autofocus due to its advantages such as low cost.

  FIG. 1 is a local three-dimensional exploded view of a known VCM lens autofocus module. Compensating motion with the support frame counteracts the effects of image blur caused during the vibration process. Alternatively, a mechanical structure is installed on the lens to remove camera shake. Alternatively, by adopting two gyro sensors, the horizontal and vertical vibrations of the imaging element are detected, and the operation element is compensated using the driving of magnetic force.

  1 is a local three-dimensional exploded view of a known VCM lens autofocus module, FIG. 2 is a three-dimensional view after the combination of FIG. 1, and FIG. 3 is a cross-sectional view taken along line AA of FIG. This known VCM lens autofocus module is provided with a cover 1, an upper elastic piece 2 is provided in the cover 1, an outer fixed portion and an inner movable portion are provided on the upper elastic piece 2, and the inner movable portion is provided. Is linked to a lens mounting sheet, and a lens is mounted in the lens mounting sheet.

  Between the cover 1 and the upper elastic piece 2, there is an active space in which the lens can move a distance, whereby a packing 3 is provided between the cover 1 and the upper elastic piece 2, and the upper The lens is moved up and down by the activity space formed between the upper elastic piece 2 and the cover 1 so as to be able to autofocus.

  However, in the known structure, since the packing 3 is provided, the cost is increased, and one process is increased in assembling, thereby increasing the burden of assembling. Accordingly, in order to save the packing, the inventor repeated research, fixed the upper elastic piece 2 by changing the upper end structure of the frame cover, and formed an activity space for moving the distance of the lens. Reduce costs and assembly process.

  The main object of the present invention is to provide a kind of lens focus module frame cover structure, which saves one packing over the well-known technology and reduces the manufacturing cost and assembly process of the module. To do.

  In order to achieve the above-described object, the frame cover structure of the lens focus module of the present invention is provided with a two-step staircase structure that is reduced inwardly and extended upward at the outer edge portion of the upper surface of the frame cover, and the elastic element is Directly, it was combined with the uppermost end of the outermost edge in the frame cover, and the upper surface of the frame cover and the active space for lens movement were retained.

  The frame cover structure of the lens focus module of the present invention saves one packing over the known technology, and reduces the module manufacturing cost and assembly process.

It is a local three-dimensional exploded view of a known VCM lens autofocus module. It is the three-dimensional figure after the combination of FIG. It is AA sectional drawing of FIG. It is a three-dimensional exploded view of an embodiment of the present invention. It is a three-dimensional view of an embodiment of the frame cover of the present invention. It is BB sectional drawing of FIG.

  In order to describe in detail the technical contents, structural features, and objects to be achieved of the present invention, examples will be described below in combination with the drawings.

  Please refer to FIG. FIG. 4 is an exploded view of an embodiment of the frame cover structure of the microlens focus module of the present invention. The frame cover structure of the microlens focus module of the present invention includes a mounting sheet 10, a coil element 20, a frame 30, four magnetic elements 40, at least one elastic element 50, a frame cover 60, and a lens 80.

  The mounting sheet 10 is used to mount the lens 80, a through-shaft hole structure is provided in the center portion, a female screw is disposed on the inner peripheral surface of the shaft hole, and a male screw outside the lens 80. The lens 80 is fixed in the hollow shaft hole of the mounting sheet 10 by being screwed. The outside of the mounting sheet 10 is covered with the coil element 20.

  The frame 30 has a cubic hollow structure, and four magnetic elements 40 such as magnets are accommodated in the hollow portions of the four vertical surfaces. The placement sheet 10 is accommodated in the central portion of the hollow structure of the frame 30 and The placement sheet 10 can only move linearly in the light beam entry direction within the frame 30.

  Please refer to FIG. FIG. 5 is a three-dimensional view of an embodiment of the frame cover of the present invention. 6 is a cross-sectional view taken along line BB in FIG. A two-layered step-like structure 61 that is inwardly stretched and extended upward is provided at the outer edge portion of the upper surface of the frame cover 60, whereby the elastic element 50 is directly combined with the uppermost end portion in the frame cover 60, In addition, the upper surface of the frame cover 60 and the active space for lens movement are maintained.

  Preferably, the frame cover 60 is made of a metal material to cover and protect the entire lens focus module, prevent electromagnetic interference, and is used for electrostatic protection.

DESCRIPTION OF SYMBOLS 1 Cover 2 Upper elastic piece 3 Packing 10 Mounting sheet 20 Coil element 30 Frame 40 Magnetic element 50 Elastic element 60 Frame cover 61 Step-like structure 70 Bottom cover 80 Lens

Claims (5)

In the frame cover structure of the lens focus module, the lens focus module is:
A frame having a cubic hollow structure, wherein the four magnetic elements are housed in the hollow portions of the four vertical surfaces;
The mounting sheet, which exhibits a hollow shaft hole structure and mounts a microlens in the shaft hole,
At least one elastic element, having an outer fixed part and an inner movable part, wherein the central hollow part corresponds to the axial hole of the placement sheet;
A frame cover provided with a two-layered stepped structure inwardly and extending upwardly at an outer edge portion of the upper surface thereof, whereby the elastic element is directly combined with the uppermost end portion in the frame cover; And the frame cover for holding the upper surface of the frame cover and an active space for lens movement;
A frame cover structure for a lens focus module, comprising:   2. The frame cover structure of the lens focus module according to claim 1, wherein the outer fixing portion of the elastic element is fixed to the uppermost end portion of the outermost edge of the frame cover. .   2. The frame cover structure of the lens focus module according to claim 1, wherein an inner movable portion of the elastic element is connected to the placement sheet, and the placement sheet is elastically movable supported at the center of the frame. A frame cover structure for a lens focus module, wherein the frame cover structure is movable up and down in the activity space and performs autofocus.   The lens cover module frame cover structure according to claim 1, wherein the frame cover is made of a metal material to cover and protect the entire lens focus module, to prevent electromagnetic interference, and to protect electrostatically. Focus module frame cover structure.   2. The frame cover structure of the lens focus module according to claim 1, further comprising a bottom cover combined with the bottom of the frame cover.

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