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Image capture system mirror group

An image capture and lens group technology, which is applied in the field of image capture system lens groups, can solve the problems of shortening the lens distance of the image capture system mirror group and excessive lens space, so as to shorten the lens distance, facilitate miniaturization, Improve the effect of too large lens space

Active Publication Date: 2015-09-16
LARGAN PRECISION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to improve the problems existing in the prior art, the object of the present invention is to provide an image capture system lens group, which utilizes shortening the lens spacing of the image capture system lens group to effectively improve the large viewing angle lens due to too large lens spacing. Causes the problem of excessive lens space, which is conducive to the miniaturization of the lens, making it more suitable for small optical systems

Method used

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Examples

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no. 1 example ＞

[0115] Please refer to Figure 1A to Figure 1E As shown, the image capture system lens group 10 of the first embodiment is along the optical axis, from the object side to the image side (that is, along the Figure 1A from the left side to the right side) sequentially includes a first lens 110, an aperture 100, a second lens 120, a third lens 130, a fourth lens 140, an infrared filter filter 150, an imaging surface 160 and an image sensing element 170 .

[0116] The first lens 110 has a negative refractive power and is made of plastic. The object side 111 is convex, and the image side 112 is concave. Both the object side 111 and the image side 112 are aspherical. The second lens 120 has a positive refractive power and is made of plastic. The object side 121 and the image side 122 are both convex and aspherical. The third lens 130 has a negative refractive power and is made of plastic. The object side 131 is concave, the image side 132 is convex, and both the object side 131 an...

no. 2 example ＞

[0132] Please refer to Figure 2A to Figure 2E As shown, the mirror group 20 of the image capture system of the second embodiment includes a first lens 210, a diaphragm 200, a second lens 220, and a third lens 230 along the optical axis from the object side to the image side in sequence. , a fourth lens 240 , an infrared filter 250 , an imaging surface 260 and an image sensor 270 .

[0133] The first lens 210 has negative refractive power and is made of plastic. The object side 211 is convex, and the image side 212 is concave. Both the object side 211 and the image side 212 are aspherical. The second lens 220 has a positive refractive power and is made of plastic, and the object side 221 and the image side 222 are both convex and aspherical. The third lens 230 has a negative refractive power and is made of plastic. The object side 231 is concave, the image side 232 is convex, and both the object side 231 and the image side 232 are aspherical. The fourth lens 240 has a positi...

no. 3 example ＞

[0150] Please refer to Figures 3A to 3E, the image capture system lens group 30 of the third embodiment includes a first lens 310, an aperture 300, and a second lens in sequence along the optical axis from the object side to the image side. 320 , a third lens 330 , a fourth lens 340 , an infrared filter 350 , an imaging surface 360 ​​and an image sensor 370 .

[0151]The first lens 310 has a negative refractive power and is made of plastic. The object side 311 is convex, and the image side 312 is concave. Both the object side 311 and the image side 312 are aspherical. The second lens 320 has a positive refractive power and is made of plastic. The object side 321 and the image side 322 are both convex and aspherical. The third lens 330 has a negative refractive power and is made of plastic. The object side 331 is concave, the image side 332 is convex, and both the object side 331 and the image side 332 are aspherical. The fourth lens 340 has a positive refractive power and is ...

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Abstract

An image capturing lens assembly includes, in order from an object-side to an image-side along an optical axis, a first lens element, a second lens element, a third lens element and a fourth lens element. The first lens element with negative refractive power has an image-side surface being concave at a paraxial region. The second lens element with positive refractive power has an image-side surface being convex at a paraxial region. The third lens element with negative refractive power has an object-side surface being concave at a paraxial region, and an image-side surface being convex at a paraxial region. The fourth lens element with positive refractive power has an object-side surface being convex at a paraxial region, and an image-side surface being concave at a paraxial region, and at least one of the object-side surface and the image-side surface is aspheric.

Description

technical field [0001] The invention relates to an image capture system mirror group, in particular to an image capture system mirror group applied to electronic products. Background technique [0002] In recent years, with the rise of portable electronic products with photography functions, the demand for miniaturized optical systems has been increasing, and the photosensitive elements of general optical systems are nothing more than Charge Coupled Devices (CCD) or complementary There are two types of Complementary Metal-Oxide Semiconductor Sensor (CMOS Sensor), and due to the improvement of semiconductor process technology, the pixel size of the photosensitive element has been reduced. In addition, today's electronic products are characterized by good functions and thin, light and short appearance. Therefore, miniaturized optical systems with good imaging quality have become the mainstream in the current market. A three-chip miniaturized optical system traditionally mount...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B13/00G02B13/18G02B13/22G02B13/06
CPCG02B13/06G02B13/18G02B9/34G02B13/22G02B13/004G02B13/00
Inventor 许志文蔡宗翰陈纬彧
Owner LARGAN PRECISION
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