Optical lens group and imaging device

An optical lens and lens technology, applied in optics, optical components, instruments, etc., can solve the problems of consumers being discouraged, not easy to carry, and high unit price of products

Active Publication Date: 2018-08-31
LARGAN PRECISION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The traditional telephoto optical system mostly adopts a multi-chip structure and is equipped with a spherical glass lens. This kind of configuration not only makes the lens too bulky and difficult to carry, but also the high unit price of the product also discourages consumers. Therefore, now Some optical systems can no longer meet the photography needs of ordinary consumers who pursue convenience and versatility

Method used

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  • Optical lens group and imaging device
  • Optical lens group and imaging device
  • Optical lens group and imaging device

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0117] Please refer to figure 1 and figure 2 ,in figure 1 A schematic diagram showing an imaging device according to the first embodiment of the present invention, figure 2 From left to right are the spherical aberration, astigmatism and distortion curves of the first embodiment. Depend on figure 1 It can be seen that the image capturing device of the first embodiment includes an optical lens group (not another number) and an electronic photosensitive element 160 . The optical lens group includes an aperture 100, a first lens 110, a second lens 120, a third lens 130, an infrared filter 140, and an imaging surface 150 in order from the object side to the image side. The electronic photosensitive element 160 is arranged on the optical lens Set of imaging planes 150 . The optical lens group has three lenses (110-130) with refractive power, and the first lens 110 to the third lens 130 are three non-adhesive independent lenses.

[0118] The first lens 110 has positive refra...

no. 2 example

[0153] Please refer to image 3 and Figure 4 ,in image 3 A schematic diagram showing an imaging device according to a second embodiment of the present invention, Figure 4 From left to right are the spherical aberration, astigmatism and distortion curves of the second embodiment. Depend on image 3 It can be known that the image capturing device of the second embodiment includes an optical lens group (not another number) and an electronic photosensitive element 260 . The optical lens group includes a first lens 210, an aperture 200, a second lens 220, a third lens 230, an infrared filter 240, and an imaging surface 250 in order from the object side to the image side. The electronic photosensitive element 260 is arranged on the optical lens The imaging surface 250 of the group; wherein, there are three lenses (210-230) with refractive power in the optical lens group, and the first lens 210 to the third lens 230 are three non-adhesive independent lenses.

[0154] The firs...

no. 3 example

[0167] Please refer to Figure 5 and Figure 6 ,in Figure 5 A schematic diagram showing an imaging device according to a third embodiment of the present invention, Figure 6 From left to right are the spherical aberration, astigmatism and distortion curves of the second embodiment. Depend on Figure 5 It can be seen that the image capturing device of the third embodiment includes an optical lens group (not another number) and an electronic photosensitive element 360 . The optical lens group includes a first lens 310, an aperture 300, a second lens 320, a third lens 330, an infrared filter 340, and an imaging surface 350 in order from the object side to the image side. The electronic photosensitive element 360 is arranged on the optical photography The imaging surface 350 of the lens group; wherein, there are three lenses (310-330) with refractive power in the optical lens group, and the first lens 310 to the third lens 330 are three non-adhesive independent lenses.

[01...

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PUM

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Abstract

The invention discloses an optical lens group and an image capture apparatus. From the object side to the imaging side, the optical lens group successively includes: a first lens, a second lens and a third lens, wherein the first lens is provided with positive refraction power; the object side surface of the first lens is a convex surface, and both the object side surface and the imaging side surface are aspheric surfaces; the second lens is provided with negative refraction power; the imaging side surface of the second lens is a concave surface, and both the object side surface and the imaging side surface of the second lens are aspheric surfaces; the third lens is provided with refraction power; and the object side surface of the third lens is a concave surface, and both the object side surface and the imaging side surface of the third lens are aspheric surfaces. When a specific condition is satisfied, the spherical aberration and astigmatism generated because of the high refraction power of the first lens can be balanced and the incident angle of the surrounding light beam into the surface of the lens can be relieved, so that generation of the stray light can be effectively reduced and the refraction power of the third lens can be controlled at the same time to enable the refraction power of the third lens to accord with a better back focal length. The invention also discloses an image capture apparatus with the optical lens group.

Description

technical field [0001] The invention relates to an optical lens group and an image-taking device, and in particular to a miniaturized optical lens group and an image-taking device applied to an electronic device. Background technique [0002] In recent years, with the rise of electronic products with photographic functions, the demand for optical systems has increased day by day. The photosensitive element of the general optical system is nothing more than two types of photosensitive coupled device (Charge Coupled Device, CCD) or complementary metal oxide semiconductor element (Complementary Metal-Oxide Semiconductor Sensor, CMOS sensor), and with the advancement of semiconductor technology, The pixel size of the photosensitive element is reduced, and the optical system is gradually developing into the high-pixel field, so the requirements for imaging quality are also increasing. [0003] The traditional telephoto optical system mostly adopts a multi-chip structure and is e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B13/18G02B13/22
Inventor 薛钧哲黄歆璇
Owner LARGAN PRECISION
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