TWI509278B - Lens structure - Google Patents

Description

Lens structure

The invention relates to a lens structure.

At present, handheld electronic devices have become more and more popular, and the volume is getting lighter, thinner, shorter, and smaller. In general, the configuration of the image capturing module on the palm-sized electronic device has become a standard device. In order to match the design of the shape, the image capturing module must also be miniaturized, wherein the lens in the image capturing module is in addition to the lens. In addition to the assembly, a filter is also placed on the lens to reduce the space. At present, the filter is disposed after the lens is assembled inside the lens barrel of the lens, and needs to be adhered to the periphery of the last lens by a gel, and the filter is disposed before the gel is not cured. Behind the lens, the filter is fixed to the lens by curing of the gel. However, due to the miniaturization of the image taking module, the amount of colloid used for the fixing colloid disposed on the periphery of the lens in the lens must be limited to avoid excessive use of the optical design function of the lens. The limited amount of colloidal material often causes insufficient adhesive strength, and the filter cannot be effectively fixed, and needs to be fixed by the operation of the glue. This makes the process complex and costly.

In view of this, it is necessary to provide a lens structure that can easily and quickly fix the filter in the lens.

The invention provides a lens structure comprising a lens barrel, at least one lens and a filter. The lens barrel has a barrel chamber for receiving the lens, the barrel chamber having a half closed end and an open end. The lens is disposed adjacent to the semi-closed end, the filter being disposed adjacent the open end position. The periphery of the filter has a chamfer, and the chamfer forms a little glue space with the inner wall of the barrel chamber.

In the above lens structure, the chamfering of the periphery of the filter and the dispensing space formed by the inner wall of the barrel can provide sufficient adhesive setting and close to the open end of the barrel, so that the filter When the light sheet is assembled with the lens, the dispensing process is convenient, and the bonding is stable, which can effectively save man-hours.

The present invention will be specifically described below with reference to the accompanying drawings.

Referring to FIG. 1, a cross-sectional view of an embodiment of a lens structure of the present invention includes a lens barrel 10, at least one lens 20, and a filter 30.

The lens barrel 10 has a barrel chamber 102 for accommodating the lens 20. The barrel of the barrel chamber 102 is a hollow cylinder, and the two ends of the barrel respectively include a half closed end 104 and an opening. End 106. An entrance hole 1042 is defined in the center of the semi-closed end 104 for the light to enter the lens barrel 102 from the entrance hole 1042. The open end 106 is used to place the lens 20 therein into the barrel chamber 102. The outer surface of the lens barrel 10 is provided with an external thread 108 for engaging with the internal thread of the lens holder (not shown) to form a lens module. The lens 20 is disposed adjacent to the semi-closed end 104 from the open end 106 into the barrel chamber 102. The filter 30 is also disposed from the open end 106 into the barrel chamber 102 and is disposed at the rear end of the lens 20 while adjacent the open end 106. The inner height between the semi-closed end 104 and the open end 106 of the barrel chamber 102 corresponds to the optical thickness of the lens 20 or the lens 20 of the lens structure 100, so that the lens 20 or the lens 20 is completely accommodated. Inside the barrel chamber 102. The lens structure 100 is miniaturized such that the lens 20 or the lens 20 and the filter 30 are disposed inside the lens barrel 102 at the same time. In this embodiment, the optically designed lens 20 set has three lenses 20. The three lenses 20 are disposed within the barrel 10 through the open end 106 of the barrel chamber 102 and are routed from the semi-closed end 104 of the barrel chamber 102 to the open end 106. The rear end of the lens 20 is followed by the filter 30 at the open end 106. The peripheral edge 302 of the filter 30 is opposite the inner wall 1022 of the barrel chamber 102 and has a chamfer 304. The chamfer 304 forms an inclined surface on the wall surface of the peripheral edge 302. The inclined surface of the chamfer 304 is inclined from the inner side of the filter 30 facing the semi-closed end 104 toward the outer side opposite the open end 106. That is, the chamfered surface of the chamfer 304 is such that the outer diameter d of the outer side surface (toward the open end 106) of the filter 30 is smaller than the outer diameter D of the inner side surface (toward the semi-closed end 104). A gap space S is formed between the inclined surface of the chamfer 304 and the inner wall 1022 of the opposite barrel chamber 102 (as shown in a partially enlarged view of FIG. 2), and the dispensing space S is a slotted space. The slotted space is configured to provide a bonding glue (not shown), and the filter 30 is adhesively fixed to the open end 106 of the lens barrel 10. The dispensing space S increases the contact area between the filter 30 and the inner wall 1022 of the barrel chamber 102, so that the bonding of the filter 30 is more stable. The dispensing space S is formed at the open end 106 of the barrel chamber 102, which facilitates the dispensing process of the dispenser, and can complete the dispensing operation of the adhesive colloid G once around the periphery of the filter 30. As indicated in Figure 3, no additional glue operation is required. The dispensing space S can accommodate an appropriate amount of the adhesive colloid G, which does not cause the overflow of the glue and the need for manual insertion, thereby achieving good use efficiency and saving labor.

In summary, the periphery of the filter 30 of the lens structure of the present invention has a chamfer 304, and the chamfer 304 and the dispensing space S formed by the inner wall 1022 of the barrel chamber 102 facilitate the bonding of the colloid G. The setting and dispensing process operation can stabilize the bonding of the filter 30 and save man-hours.

It should be noted that the above-described embodiments are merely preferred embodiments of the present invention, and those skilled in the art can make other changes within the spirit of the present invention. All changes made in accordance with the spirit of the invention are intended to be included within the scope of the invention.

100. . . Lens structure

10. . . Lens barrel

102. . . Barrel chamber

1022. . . Inner wall

104. . . Semi-closed end

1042. . . Incident hole

106. . . Open end

108. . . External thread

20. . . lens

30. . . Filter

302. . . Periphery

304. . . Chamfer

D, d. . . Outer diameter

G. . . Adhesive colloid

S. . . Dispensing space

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a cross-sectional view showing a combination of an embodiment of a lens structure of the present invention.

Figure 2 is a partial enlarged view of II in the lens structure of Figure 1.

3 is a perspective view of the lens structure of FIG. 1.

100. . . Lens structure

10. . . Lens barrel

102. . . Barrel chamber

1022. . . Inner wall

104. . . Semi-closed end

1042. . . Incident hole

106. . . Open end

108. . . External thread

20. . . lens

30. . . Filter

302. . . Periphery

304. . . Chamfer

D, d. . . Outer diameter

Claims (7)

A lens structure comprising a lens barrel, at least one lens and a filter, the lens barrel having a lens barrel chamber for accommodating the lens, the lens barrel chamber having a half closed end and an open end The lens is disposed adjacent to the semi-closed end, the filter is disposed adjacent to the open end position, the periphery of the filter has a chamfer, and the chamfer forms a point with the inner wall of the barrel chamber Plastic space. The lens structure according to claim 1, wherein the barrel of the barrel chamber is a hollow cylinder, and an entrance hole is defined in a center of the semi-closed end, and the other end of the semi-closed end is the opening. end. The lens structure according to claim 1, wherein the periphery of the filter is opposite to the inner wall of the barrel chamber, and the chamfer on the circumference forms an inclined surface on the peripheral wall surface. The lens structure according to claim 3, wherein the inclined surface is inclined from an inner side of the filter facing the semi-closed end toward an outer side opposite to the open end. The lens structure of claim 4, wherein the inclined surface has a diameter smaller than an outer edge of the inner side of the filter. The lens structure of claim 1, wherein the dispensing space is a slotted space for providing an adhesive colloid setting. The lens structure of claim 1, wherein the dispensing space is formed at an open end of the barrel chamber.