TWI605713B - Positioning device for assembly of image capturing module - Google Patents

Description

Positioning device for image capturing module assembly

The present invention relates to a positioning device, and more particularly to a positioning device for assembling an image capturing module.

The image capturing module is mainly composed of a lens, an image sensor and a circuit board. The image sensor is disposed on the circuit board, and the light image is focused on the image sensor by the lens to generate an image signal, and then the circuit is transmitted through the circuit. The board is transmitted to the processor to analyze the image signal of the optical image.

When the image capture module has dual lenses, in addition to the optical tolerance of the lens itself, there are assembly tolerances between the two lenses, so when the assembly tolerance between the two lenses is too large, the error of the image signal will also become larger. , thus affecting the quality of imaging.

The invention relates to a positioning device for accurately positioning an image capturing module and a frame to reduce assembly tolerances.

According to an aspect of the invention, a positioning device is provided, comprising a module fixing jig and an auxiliary positioning jig. The module fixing fixture includes a positioning slot And a plurality of positioning blocks disposed around the positioning slot, wherein the image capturing module and the frame are disposed in the positioning slot and the positioning blocks elastically abut the image capturing module and the frame. The auxiliary positioning fixture is disposed on the module fixing fixture, wherein the auxiliary positioning fixture comprises a hollow body and an upper pressing member, the hollow body covers the upper portion around the positioning slot and has an opening exposed above the image capturing module. The upper pressing member is located in the opening, wherein the frame is mounted around the image capturing module, and the image capturing module is pressed by the upper pressing member to be fixed in the frame.

In order to better understand the above and other aspects of the present invention, the preferred embodiments are described below, and in conjunction with the drawings, the detailed description is as follows:

100‧‧‧ Positioning device

110‧‧‧Modular fixture

111‧‧‧ Positioning pin

112‧‧‧ positioning slot

114, 115‧‧‧ positioning block

120‧‧‧Assisted positioning fixture

122‧‧‧ hollow body

123‧‧‧ openings

124‧‧‧Upper parts

126‧‧‧Frame positioning department

127‧‧‧ injection hole

128‧‧‧Inside frame

129‧‧ ‧ tripod

130‧‧‧ pressure plate

140‧‧‧Clamp

150‧‧‧Image capture module

151‧‧‧ first shot

152‧‧‧second lens

153‧‧‧Outer Rings

154‧‧‧Outer Rings

155, 156‧‧‧ connectors

160‧‧‧Frame

161‧‧‧The first hollow

162‧‧‧Second hollow

163‧‧‧First Positioning Department

164‧‧‧Second Positioning Department

S1‧‧‧ first side

S2‧‧‧ second side

S3‧‧‧ third side

S4‧‧‧ fourth side

FIG. 1 is a perspective view of a positioning device according to an embodiment of the invention.

FIG. 2 is an exploded perspective view of the positioning device of FIG. 1.

FIG. 3 is a schematic exploded view of the module fixing jig and the auxiliary positioning jig in FIG. 2 .

FIG. 4 is a schematic view showing the positioning block elastically abutting on both sides of the image capturing module in FIG. 3 .

FIG. 5 is a schematic diagram showing the image capturing module disposed in the frame in FIG. 3 .

FIG. 6 is a schematic diagram showing the auxiliary positioning fixture disposed above the image capturing module in FIG. 3 .

Fig. 7 is a perspective view showing the auxiliary positioning jig in Fig. 6.

Figure 8 is a bottom view of the frame in Figure 3.

The following is a detailed description of the embodiments, and the examples are only used for The description is not intended to limit the scope of the invention as claimed.

Referring to FIGS. 1 and 2, the positioning device 100 according to an embodiment of the present invention may include a module fixing jig 110, an auxiliary positioning jig 120, a pressing plate 130, and a jig 140. The clamp 140 is, for example, a pair of jaw-shaped clamps, and the pressure plate 130 is over the auxiliary positioning fixture 120, and the auxiliary positioning fixture 120 can be clamped between the pressure plate 130 and the module fixing fixture 110 by the clamp 140. Of course, the positioning device 100 of the embodiment can also fix the module fixing jig 110 and the auxiliary positioning jig 120 in a non-clamping manner (for example, locking or clamping). Therefore, the jig 140 in the above embodiment is only In one embodiment, the invention is not limited thereto.

In addition, the pressure plate 130 mainly transmits the clamping force to the upper pressing member 124 and the upper pressing member 124 is pressed against the image capturing module 150. Therefore, in addition to the pressing plate 130 having a large covering area, The pressure plate 130 in the above embodiment is only one embodiment, and the invention is not limited thereto. In addition, the pressure plate 130 can also be regarded as a part of the upper pressing member 124 or integrally formed with the hollow body 122.

As shown in FIGS. 2 and 3, the auxiliary positioning fixture 120 includes a hollow body 122 and an upper pressing member 124. The hollow body 122 covers the upper portion of the positioning groove 112. The upper pressing member 124 is received in an opening 123 of the hollow body 122, and the opening 123 is exposed above the image capturing module 150. In addition, the hollow body 122 has a plurality of holes corresponding to the plurality of positioning pins 111 disposed on the module fixing jig 110 , so that the hollow body 122 is positioned on the module fixing jig 110 . In addition, the upper pressing member 124 is composed of an outer frame positioning portion 126 and two inner frame portions 128, and the outer frame is fixed. The position portion 126 can be fixed on the auxiliary positioning fixture 120 by the module, and the two inner frame portions 128 are located in the outer frame positioning portion 126, and are respectively pressed against the image capturing module 150 to capture the image. The module 150 is evenly stressed.

Referring to FIGS. 3 , 4 and 5 , the module fixing jig 110 includes a positioning slot 112 and a plurality of positioning blocks 114 and positioning blocks 115 disposed around the positioning slot 112 . The positioning groove 112 is integrally formed on the base of the module fixing jig 110 according to the shape and size of the image capturing module 150 and the frame 160, so that the image capturing module 150 and the frame can be accommodated in the positioning groove 112 and substantially The upper portion is positioned in the positioning slot 112. In FIG. 3 , the image capturing module 150 is a dual lens imaging module including a first lens 151 and a second lens 152 . In an embodiment, the optical image can be focused by the first lens 151 and the second lens 152, and then transmitted to a processor (not shown) via the respective connectors 155 and 156 to analyze the image signal of the optical image. In order to accurately position the image capturing module 150 and the frame 160 to reduce the assembly tolerance between the first lens 151 and the second lens 152, the frame 160 is mounted on the image capturing module 150 by using the positioning device 100 described above. Surrounding, and the first lens 151 and the second lens 152 are thermoset-bonded and fixed in the frame 160 to minimize the assembly tolerance between the first lens 151 and the second lens 152, and the following is for the image capturing mode. The assembly process of group 150 is described in conjunction with the drawings.

First, referring to FIG. 4 , the image capturing module 150 is disposed in the positioning slot 112 , and the positioning block 114 is elastically abutted on both sides of the image capturing module 150 . The positioning block 114 (three are shown in the figure) is adjacent to the first side S1 and the second side S2 of the image capturing module 150 and is internally provided with a return spring (not shown), first The side S1 and the second side S2 are adjacent to each other, so that the positioning block 114 can be applied to both sides of the image capturing module 150. One end of a positioning block 114 abuts against the first side S1 of the image capturing module 150 (that is, abuts on the outer ring portion 153 of the first lens 151), and is pushed toward the opposite third side S3. One end of the other positioning block 114 abuts against the second side S2 of the image capturing module 150 (that is, abuts on the outer ring portion 153 of the first lens 151 and the outer ring portion 154 of the second lens 152) And pushing against the opposite fourth side S4, so that the image capturing module 150 is initially positioned in the positioning slot 112.

Next, referring to FIG. 5 , the frame 160 is disposed in the positioning groove 112 . At this time, the positioning block 114 can still pass through the frame 160 and continuously abut on the outer ring portion 153 and the second lens 152 of the first lens 151 . The outer ring portion 154 is disposed on the outer ring portion 154, and the frame 160 is elastically abutted against the positioning block 115 and positioned around the image capturing module 150. The positioning blocks 115 are oppositely disposed on opposite sides of the frame 160, for example, and are internally provided with a return spring (not shown) such that the front end of the positioning block 115 can protrude laterally above the frame 160 and press the frame 160 to avoid positioning. The block 114 applies a force causing the frame 160 to bounce up. In one embodiment, the frame 160 has a first hollow portion 161 and a second hollow portion 162 corresponding to the first lens 151 and the second lens 152, respectively. The first hollow portion 161 surrounds the outer ring portion 153 of the first lens 151 , and the second hollow portion 162 surrounds the outer ring portion 154 of the second lens 152 .

Next, referring to FIGS. 6 and 7, the upper pressing member 124 is disposed on the module fixing jig 110, and the hollow body 122 and the pressing plate 130 in FIG. 2 are sequentially placed on the module fixing jig 110 and The upper pressing member 124 is surrounded and finally clamped by the clamp 140. The inner frame portion 128 is tightly received in the outer frame positioning portion 126, and The legs 129 at the bottom of the two inner frame portions 128 are respectively pressed against the outer ring portion 153 of the first lens 151 and the outer ring portion 154 of the second lens 152 so that the center of the first lens 151 and the second lens 151 are 151. The centers are respectively aligned with the center of the two inner frame portions 128.

In addition, the two inner frame portions 128 are respectively provided with a glue injection hole 127 which is exposed above the outer ring portion 153 of the first lens 151 and above the outer ring portion 154 of the second lens 152. Therefore, the dispenser can extend into the inner frame portion 128 through the pressure plate 130 and the two injection holes 127, and inject the thermosetting glue into the outer ring portion 153 of the first lens 151 and the outer ring of the second lens 152. Part 154. Therefore, the thermosetting glue can be accurately positioned at a predetermined position, and the image sensor is not required to be corrected before dispensing to save the correction time.

As shown in FIG. 3, the thermosetting adhesive forms, for example, two annular sheets 157 and 158 which are cured and adhered to the frame 160 to keep the distance between the first lens 151 and the second lens 152 fixed, thereby reducing assembly errors. .

Next, referring to FIG. 8 , a first positioning portion 163 (eg, a bump) and a second positioning portion 164 (eg, a bump) may be respectively disposed on sidewalls of the first hollow portion 161 and the second hollow portion 162 . The first positioning portion 163 is for abutting the outer ring portion 153 of the first lens 151, and the second positioning portion 164 is for abutting the outer ring portion 154 of the second lens 152 to further ensure the first lens 151 and the second lens 151. The distance between the lenses 152 remains fixed, thereby reducing assembly errors.

The positioning device disclosed in the above embodiments of the present invention is used for accurately positioning the image capturing module and the frame to reduce assembly tolerance between the two lenses. Adopt double The lens module can capture 3D images and adjust the depth of field or multi-aperture, zoom and super wide-angle effects to solve the problem of insufficient depth of field due to the fixed large aperture design when shooting single-lens images. The background or foreground outside the focus body is easy. Become blurred and other issues. Therefore, the positioning device of the present invention can improve the assembly precision of the image capturing module, thereby improving the imaging quality of the image capturing module.

In conclusion, the present invention has been disclosed in the above preferred embodiments, and is not intended to limit the present invention. A person skilled in the art can make various changes and modifications without departing from the spirit and scope of the invention. Therefore, the scope of the invention is defined by the scope of the appended claims.

100‧‧‧ Positioning device

110‧‧‧Modular fixture

111‧‧‧ Positioning pin

115‧‧‧ Positioning block

120‧‧‧Assisted positioning fixture

122‧‧‧ hollow body

123‧‧‧ openings

124‧‧‧Upper parts

126‧‧‧Frame positioning department

128‧‧‧Inside frame

130‧‧‧ pressure plate

140‧‧‧Clamp

Claims (6)

An image capturing module assembly positioning device includes: a module fixing jig, comprising a positioning slot and a plurality of positioning blocks disposed around the positioning slot, wherein the image capturing module and a frame are disposed on the And the auxiliary positioning fixture is disposed on the module fixing fixture, wherein the auxiliary positioning fixture comprises a hollow body and the positioning fixture is elastically abutted between the image capturing module and the frame; An upper pressing member covers the upper portion of the positioning groove and has an opening exposed above the image capturing module, wherein the upper pressing member is located in the opening, wherein the frame is mounted on the image capturing module The image capturing module is fixed in the frame by the pressing member, wherein the image capturing module includes a first lens and a second lens, and the upper pressing member includes a frame positioning And the second inner frame portion, the outer frame positioning portion is disposed on the module fixing jig, and the two inner frame portions are disposed in the outer frame positioning portion and respectively pressed against the outer ring portion of the first lens The outer ring of the second lens Above. The positioning device of claim 1, wherein the frame is provided with a first hollow portion and a second hollow portion corresponding to the first lens and the second lens, respectively. The positioning device of claim 2, wherein a first positioning portion and a second positioning portion are respectively disposed on the sidewalls of the first hollow portion and the second hollow portion, and the first positioning portion abuts the The outer ring portion of the first lens abuts the outer ring portion of the second lens. The positioning device of claim 1, wherein the two inner frame portions are respectively provided with a glue injection hole, which is exposed above the outer ring portion of the first lens and the second Above the outer ring of the lens. An image capturing module assembly positioning device includes: a module fixing jig, comprising a positioning slot and a plurality of positioning blocks disposed around the positioning slot, wherein the image capturing module and a frame are disposed on the An auxiliary positioning fixture is disposed on the module fixing fixture, wherein the auxiliary positioning fixture comprises a hollow body and a An upper pressing member covers the upper portion of the positioning groove and has an opening exposed above the image capturing module, wherein the upper pressing member is located in the opening, wherein the frame is mounted around the image capturing module And the image capturing module is fixed in the frame by being pressed by the upper pressing member; and a clamp for clamping the fixing fixture of the module and the auxiliary positioning fixture. The positioning device of claim 5, further comprising a pressing plate covering the auxiliary positioning fixture, wherein the auxiliary positioning fixture is clamped by the clamp to the pressing plate and the module fixing fixture between.