TWI447459B - Lens assembling device - Google Patents

Description

Lens assembly device

The present invention relates to a lens assembly device.

In the production process of the lens module, whether the optical axis of each lens component coincides with the axis of the lens barrel has a great influence on the image quality. At present, when a lens assembly such as a lens, a light shielding film, and a gasket is assembled to a lens barrel, the lens assembly is directly pressed into the lens barrel by a manual pressure bar, but this is liable to cause various problems such as tilting of the lens assembly and deformation of the lens assembly. Seriously affected the quality of the lens module.

In view of this, it is necessary to provide a lens assembly device that improves product assembly yield.

A lens assembly device for assembling a lens assembly into a lens barrel. The lens assembly device includes a transparent sleeve, a pressure bar slidably received in the sleeve, and an elastic member. A retaining ring is arranged in the middle of the inner wall of the sleeve. The pressure bar comprises a pressure bar body, a convex portion extending axially along one end of the pressure bar body, and a pressing head located on the convex portion extending axially away from the pressure bar body. The pressure bar body is in contact with an inner wall of the sleeve, a convex portion of the pressure bar is in contact with an inner wall of the retaining ring, and a radial dimension of the pressing head and a diameter of the lens assembly The dimensions are the same. One end of the elastic member is connected to the lower surface of the pressure bar body, and the other end is connected to the upper surface of the baffle. The elastic member is compressed when the pressure bar is pressed toward a direction close to the lens assembly; the elastic member is released when the pressure bar is released The pressure bar is moved toward a direction away from the lens assembly.

The lens assembly device of the present invention utilizes a sleeve to ensure that the pressure bar presses the lens assembly along its axial direction, effectively preventing the lens assembly from tilting when the lens assembly is assembled into the lens barrel.

100‧‧‧Lens assembly device

111‧‧‧through hole

113‧‧ ‧ retaining ring

115‧‧‧ Upper surface of the retaining ring

121‧‧‧pressure bar body

123‧‧‧Indenter

130‧‧‧Slide ring

132‧‧‧Sliding ring outer wall

134‧‧‧ lower surface of the slider ring

141‧‧‧ one end

150‧‧‧ accommodating space

210‧‧‧Mirror tube

300‧‧‧Workbench

110‧‧‧ sleeve

112‧‧‧ inner wall

114‧‧‧Base

120‧‧‧ pressure bar

122‧‧‧ raised parts

124‧‧‧Outer wall of the raised part

131‧‧‧through hole

133‧‧‧The inner wall of the slider ring

140‧‧‧Flexible parts

142‧‧‧The other end

200‧‧‧ lens assembly

220‧‧‧Tray

1 is a schematic view of a lens assembly device according to an embodiment of the present invention before assembling a lens; FIG. 2 is a schematic view of a lens assembly device according to an embodiment of the present invention when assembling a lens.

The invention will be further described in detail below with reference to the accompanying drawings.

Please refer to FIG. 1 , which is a lens assembly device 100 for assembling a lens assembly 200 into a lens barrel 210 , which includes a sleeve 110 , a pressure bar 120 , a slider ring 130 , and a lens assembly device 100 . Elastic member 140.

The sleeve 110 is a cylindrical structure having a through hole 111 formed in a transparent material, and a retaining ring 113 is formed circumferentially along the central portion of the inner wall 112. A base is formed on the outer side of the bottom end of the sleeve 110. 114. The retaining ring 113 includes an upper surface 115 for supporting the sleeve 110 on the table 300. It can be understood that the sleeve 110 is made of a transparent material, which is convenient for the worker to align the position of the pressure bar 120 with the lens barrel 210 more accurately and conveniently during use.

The pressing rod 120 includes a pressing rod body 121, and a protruding portion 122 extending axially along one end of the pressing rod body 121, and extending axially away from one end of the pressing rod body 121 on the protruding portion 122 Indenter 123. The radial dimension of the indenter 123 is the same as the radial dimension of the lens assembly 200, so that the lens assembly 200 can be pressed to the lens barrel 210. in. The pressure bar 120 is received in the sleeve 110, and the pressure bar body 121 is in contact with the inner wall 112 of the sleeve 110, while the outer wall 124 of the boss portion 122 and the retaining ring 113 is in contact with each other to ensure that the axis of the sleeve 110 and the pressure bar 120 coincide with each other, so that the pressure bar 120 can move along the axial direction of the pressure bar 120 when sliding in the sleeve 110, A tilt occurs. It will be appreciated that the pressure bar 120 can be replaced depending on the radial dimension of the lens assembly 200.

The slider ring 130 can be received in the sleeve 110. A through hole 131 is defined in the middle of the slider ring 130. The raised portion 122 of the pressure bar 120 can pass through the through hole 131 of the slider ring 130, and the pressure bar body 121 is placed on the slider ring 130, and the inside of the slider ring 130 The wall 133 is in contact with the raised portion 122 of the pressure bar 120, and the outer wall 132 of the slider ring 130 is in contact with the inner wall 112 of the sleeve 110, thereby ensuring the slider ring 130 and the pressure. The axes of the rods 120 and the sleeves 110 coincide with each other. It can be understood that the slider ring 130 can also be omitted, but after the slider ring 130 is disposed, the pressure bar 120 can be moved more smoothly along its axial direction.

The elastic member 140 is placed in the accommodating space 150 formed between the inner wall 112 of the sleeve and the outer wall 124 of the convex portion 122 of the pressure bar 120 along the axial direction of the pressure bar 120, and One end 141 of the elastic member 140 is connected to the upper surface 115 of the retaining ring 113, and the other end 142 is connected to the lower surface 134 of the slider ring 130, so that the worker presses the lens assembly 200 to a proper position. The pressure bar 120 can automatically return to the initial position, and then the next assembly action can be performed. At the same time, the elastic member 140 can also buffer the pressure of the ram 123 on the lens assembly 200, so that the lens assembly 200 can be smoothly and safely placed into the lens barrel 210, and the crush lens assembly 200 can be reduced. The proportion of poor assembly. In this embodiment, the elastic member 140 is a cylindrical spring. It can be understood that, in order to prevent the elastic member 140 from weakening, The elastic member 140 may also be a conical spring.

As shown in FIG. 2, in the process of assembling the lens assembly 200 into the lens barrel 210 by using the lens assembly device 100, a tray 220 is first placed on the table 300, and the lens barrel 210 is fixed to the lens barrel 210. The lens assembly 200 is placed on the open end of the lens barrel 210, and then the lens assembly device 100 is sleeved on the lens barrel 210 to adjust the position of the lens assembly device 100. The ram 123 is aligned with the position of the barrel 210. Before the pressing, the pressure bar 120 is at the starting position. When pressed downward, the pressure bar 120 will move along the axial direction of the sleeve 110, thereby ensuring that the pressure bar 120 is vertically downward, perpendicular to the lens assembly 200, and does not cause high product yield due to tilting when pressed. . When the lens assembly 200 is pressed to a suitable position, the pressure bar 120 is released, and the elastic member 140 will automatically push the pressure bar 120 back to the starting position for the next assembly operation.

The lens assembly device of the present invention utilizes a sleeve to ensure that the pressure bar is pressed down the lens assembly along its axial direction, and an elastic member can be used to press the pressure bar back to the initial position after the lens assembly is pressed to a suitable position for the lower portion. The sub-lens assembly effectively prevents the lens assembly from tilting when the lens assembly is loaded into the lens barrel, which can effectively improve product yield and production efficiency.

In summary, the present invention has indeed met the requirements of the invention patent, and has filed a patent application according to law. However, the above description is only a preferred embodiment of the present invention, and it is not possible to limit the scope of the patent application of the present invention. Equivalent modifications or variations made by persons skilled in the art in light of the spirit of the invention are intended to be included within the scope of the following claims.

100‧‧‧Lens assembly device

111‧‧‧through hole

113‧‧ ‧ retaining ring

115‧‧‧ Upper surface of the retaining ring

121‧‧‧pressure bar body

123‧‧‧Indenter

130‧‧‧Slide ring

132‧‧‧Sliding ring outer wall

134‧‧‧ lower surface of the slider ring

141‧‧‧ one end

150‧‧‧ accommodating space

210‧‧‧Mirror tube

300‧‧‧Workbench

110‧‧‧ sleeve

112‧‧‧ inner wall

114‧‧‧Base

120‧‧‧ pressure bar

122‧‧‧ raised parts

124‧‧‧Outer wall of the raised part

131‧‧‧through hole

133‧‧‧The inner wall of the slider ring

140‧‧‧Flexible parts

142‧‧‧The other end

200‧‧‧ lens assembly

220‧‧‧Tray

Claims (4)

A lens assembly device for assembling a lens assembly into a lens barrel, the lens assembly device comprising a pressure bar, the improvement comprising: a transparent sleeve and an elastic member, the sleeve inner wall a baffle is disposed in the middle portion, and the pressure bar is slidably received in the sleeve, the pressure bar includes a pressure bar body, a convex portion extending axially along one end of the pressure bar body, and a An embossing head extending axially away from the body of the pressure bar, the body of the pressure bar contacting the inner wall of the sleeve, the convex portion of the pressure bar and the inner portion of the retaining ring Contacting the wall, the axis of the sleeve and the pressure bar are coincident, the radial dimension of the pressing head is the same as the radial dimension of the lens assembly, and one end of the elastic member is connected to the body under the pressure bar a surface, the other end being coupled to an upper surface of the baffle; the elastic member being compressed when the pressure bar is pressed toward a direction toward the lens assembly; and when the pressure bar is released, the The elastic member drives the pressure bar to move away from the lens assembly The lens assembly device of claim 1, wherein the lens assembly device further includes a slider ring housed in the sleeve, and a through hole is formed in the middle of the slider ring, a protrusion may pass through the through hole of the slider ring, and an inner wall of the slider ring is in contact with a convex portion of the pressure bar, and an outer wall of the slider ring and the sleeve The walls are in contact such that the axis of the slider ring coincides with the axis of the pressure bar and the sleeve. The lens assembly device of claim 1, wherein a sleeve is provided on a lateral outer side of the sleeve. The lens assembly device of claim 1, wherein the spring is a cylindrical spring or a conical spring.