TWI257486B - Camera lens - Google Patents

Abstract

A camera lens includes a barrel, a first lens, a second lens and an optical filter module. The barrel includes a first container and a diaphragm. The first lens is disposed in the first container next to the diaphragm. The second lens is disposed in the first container with a distance from the first lens. The optical filter module is disposed in the first container between the first and the second lens.

Description

1257486 V. INSTRUCTION DESCRIPTION (1) (I) Technical Field of the Invention The present invention relates to an image taking lens, and more particularly to an image taking lens in which a filter component is disposed between a first lens and a second lens. (2) [Prior Art] Referring to FIG. 1 , a conventional image taking lens 1 includes a lens barrel 11 , a first lens 12 , a gasket 13 , a second lens 14 , and a cut filter . The lens 1 5, a sensor 16 and a pedestal 17.

The lens barrel 11 is coupled to the base 17 and includes a receiving portion 111 and a diaphragm 11 2 . The first lens 12 is disposed in the housing portion 111 and adjacent to the aperture 112. The gasket 13 is disposed in the receiving portion 111 and adjacent to the first lens 112. The second lens 14 is disposed on the accommodating portion 111 and adjacent to the gasket 丨3. The cut-off filter 15 is disposed on the susceptor 17 and adjacent to the second lens 14. The sensing body 16 is disposed on a substrate 18, and the substrate 18 can be a printed circuit board or a flexible board. The pedestal 1 7 is connected to the substrate 18, and the pedestal 17 is adhesively packaged on the substrate 丨8. Please refer to Figure 2 for the mouth, because the cut-off filter lens 15 is adjacent to the sensed state 16', so when the light enters from the aperture U2, the first lens, the first

= lens 1 4 and cut filter lens 15 5, while the fine particles (Par ^ 1 c U) of the cut filter lens 15 will block the light, so that the upper part of the sensor 16 is drawn (P丨X e 1 ) ", when the light is received, it will have a shadowing effect, so that some of the pixels are low" and thus affect the quality of the image. Therefore, at present, the cut-off: the purity of the film is high, making the manufacturing Low yield and

1257486

The purpose is to plate the cut-off filter film, but the way in which the optical lens 15 is inserted into the first mirror lens depends on the selection of the cut-off filter 1 5 to cause collision in the wall of the circular lens barrel 1 1 The cutting yield of the circular cut-off filter 15 is much lower than that of the rear end of the cylinder 11 and the cleaning of the filter lens 15 with respect to the cut-off filter lens 15 in view of the above problems. To solve the "image taking lens" that is placed in the lens due to the cut filter filter lens. , to reduce costs, its process is not easy. The sheet 12 and the second mirror ‘but when the method accommodates the lens 15 5 , it is easy to cause the filtering of the fine particles. If the film is 1 5, the shell is squared again, causing it. The requirement to use the intercept sensor 2 6 to be placed on the pedestal 1 7 is also high. The high cleanliness of the inventor's film may also result in a trial between the manufacturer and the manufacturer. The four lenses are cut to avoid the cost of the front circle due to the fact that the cost of the lens is closer to the second mirror, and it is not possible to meet the requirements of the assembly, and the I tolerance cut-off filter angle The same as the description of the missing cut filter square piece 1 5 set piece 1 4 solves the problem of 'thinking and reducing the difference between the circle and the circle. Moreover, the light lens is in the lens and the lens is placed in the mirror mode, and the cut-off problem can be cut off. SUMMARY OF THE INVENTION The object of the present invention is to provide a high cleanliness requirement for a filter lens. An image taking lens that solves the problem of high cost of lens production due to cutoff

The edge is that the lens for the above-mentioned eyepiece tube, a first lens, and the like includes a lens and a furnace and a wave assembly. Mirror tube

Page 7, invention description (3), - the first housing and an aperture. The first lens is disposed on the first housing 4' and includes a first side of the first lens adjacent the aperture. The second lens is disposed in the first receiving portion and has a distance between the second lens and the first lens. The wave wave component is disposed in the first receiving portion and located between the first lens and the second lens. According to the above description, the image capturing lens of the present invention is provided with a filtering component between the first lens and the second lens. Compared with the prior art, the sensor does not have a shadowing effect when receiving light, so it is clean. The degree of requirements can be reduced or the assembly tolerance can be reduced to improve the yield of the image taking lens and reduce the cost. (4) [Embodiment] Hereinafter, an image taking lens according to an embodiment of the present invention will be described with reference to the related drawings, wherein the same elements will be described with the same reference numerals. Referring to FIG. 3 and FIG. 4, the image taking lens 2 according to the embodiment of the present invention comprises a lens barrel 21, a first lens 22, a second lens 23, a filter assembly 24, and a base 25. The lens barrel 2 1 includes a first receiving portion 2 1 1 and an aperture 212 and is coupled to the base 25. The pedestal 25 is connected to a substrate 27 and the pedestal 25 is adhesively packaged on the substrate 27. The substrate 27 can be a printed circuit board or a flexible board. In the embodiment of the present invention, the susceptor 25 is encapsulated on the substrate 27 by UV adhesive, and other methods for adhering the susceptor 25 to the substrate 27 are included in the patent of the present invention. The first lens 2 2 is disposed on the first receiving portion 211 and includes a first surface 221 of the first lens. The first surface 221 of the first lens is adjacent to the aperture 212

1257486 V. Description of the invention (4) Surface, and is a convex surface. The first lens 22 can be a glass lens or a plastic lens. In the embodiment of the present invention, the first lens 22 is a plastic lens and is an aspherical lens. The second lens 2 3 is disposed on the first receiving portion 2 1 1 and has a distance between the first lenses 22 . The second lens 23 can be a glass lens or a plastic lens. In the embodiment of the present invention, the second lens 23 is a plastic lens and is an aspherical lens. The second lens 23 has a second lens second face 231, and the second lens second face 231 is a counter-curved surface opposite the face of the adjacent filter assembly 24. The chopper assembly 24 is disposed in the first receiving portion 211 between the first lens 22 and the second lens 23. The thickness of the filter and wave assembly 24 can be equal to the distance between the first lens 22 and the second lens 23. The filter and wave assembly 24 includes a spacer 241 and a filter 242. The washer 2 4 1 is for isolating stray light and has a second receiving portion 2 4 11 . In the embodiment of the present invention, the gasket 24 is a ring-shaped plastic, and other gaskets for separating different materials and shapes of stray light are included in the patent of the present invention. The filter 242 is disposed in the second receiving portion 2411 for filtering unnecessary high frequency spectrum and low spectral light waves. The filter 242 can be an Infrared Rays Filter (IR Filter), an Ultraviolet Filter (UV Filter), an Absorbing Filter, or a low pass filter. The filter 242 is an infrared cut-off light mirror in the embodiment of the present invention.

Page 9 1257486 V. Description of the Invention (5) The image taking lens 2 may further include a sensor 26 disposed on the substrate 27. In the embodiment of the present invention, the sensor 26 may be a complementary metal oxide semiconductor sensor (CMOS sensor). Referring to FIG. 5, the image taking lens 2 may further include a third lens 28. The third lens 28 is disposed between the first housing portion 21 and 1 and between the aperture 2 1 2 and the first lens 2 to enhance image quality. Referring to FIG. 3 and FIG. 6 , the image taking lens 2 of the present invention comprises a filtering component 24 disposed between the first lens 2 2 and the second lens 23 , and the filtering component 24 includes a filter 2 . 4 2, therefore, when the light enters from the aperture 2 12 2, the range of the imaging light is enlarged by the first lens 22, the filter 242 and the second lens 23, so that the distance between the impurities of the filter 24 2 is also amplified. The shadowing effect of the imaging light received by the sensor 26 due to the impurities on the filter 242 is greatly reduced. Therefore, the requirement for the cleanliness of the filter 242 can be reduced, resulting in an increase in production yield. Production costs are reduced. Further, since the filter 242 and the 组件-assembly are made in the present invention, it is easier to assemble the image taking lens 2, and the assembly tolerance of the door lens 2 is reduced, so that the productivity is increased and the production cost is lowered. The above is intended to be illustrative only and not limiting. Any equivalent modifications or alterations to the spirit and scope of the present invention are intended to be included in the scope of the appended claims.

Page 10 1257486 Brief description of the diagram (5), [Simple description of the diagram] Figure 1 is a schematic cross-sectional view of a conventional imaging lens; Figure 2 is a schematic diagram of an optical path of a conventional imaging lens; FIG. 4 is a cross-sectional exploded view of an image taking lens according to an embodiment of the present invention; FIG. 5 is a cross-sectional exploded view of the image taking lens according to an embodiment of the present invention; FIG. 6 is a schematic diagram showing an optical path of an image taking lens according to an embodiment of the present invention. Description of the component symbols: 1 : Image pickup lens 11 : lens barrel 111 : housing portion 112 : aperture 12 : first lens 13 : washer 14 : second lens 15 : cut filter lens 16 : sensor 17 : base 18 : Substrate 2: image taking lens

Page 11 1257486

Page 12: Simple description 21: Ait-mirror ft 211: first housing portion 212 I diaphragm 22: first lens 221: first lens first 23: second lens 231: second lens second 24: Wave assembly 241: turns 2411: second receiving portion 242: filter 25: pedestal 26: sensor 2 7 · · substrate 2 8 · · third lens

Claims (1)

1257486 6. Patent application scope 1. An image taking lens, the image capturing lens comprising: a lens barrel having a first receiving portion and an aperture; a first lens disposed in the first receiving portion, and Adjacent to the aperture; a second lens disposed at the first receiving portion and having a distance between the second lens and the first lens; and a filter assembly disposed at the first receiving portion Between the first lens and the second lens. 2. The imaging lens of claim 1, wherein the filtering component comprises a loop and a filter. 3. The image taking lens of claim 2, wherein the filter is an infrared cut-off light-emitting lens. 4. The image taking lens of claim 2, wherein the gasket has a second receiving portion, and the filter is disposed in the second receiving portion. 5. The image taking lens of claim 1, wherein the first lens is an aspherical lens. 6. The image taking lens of claim 1, wherein the first lens is a plastic lens. 7. The image taking lens of claim 1, wherein the second lens Page 13 1257486__ VI. The scope of patent application is an aspherical lens. 8. The image taking lens of claim 1, wherein the second lens is a plastic lens. 9. The imaging lens of claim 1, wherein the first lens comprises a convex surface adjacent to the lens aperture. 10. The imaging lens of claim 1, wherein the second lens comprises an inverse curved surface opposite to a face adjacent the wave wave assembly. 11. The imaging lens of claim 1, wherein the filter component has a thickness equal to a distance between the first lens and the second lens. 12. The image taking lens as described in claim 1 of the patent application further includes a base. 13. The image taking lens of claim 12, wherein the lens barrel is coupled to the base. 14. The imaging lens of claim 1, further comprising a third lens disposed in the first receiving portion and located between the aperture and the first lens. Page 14