Optical system lens set, image capturing apparatus and electronic apparatus
An optical system and mirror group technology, applied in optics, optical components, instruments, etc., can solve problems such as use restrictions, product volume reduction is not easy, stray light intensity quality and other problems, to correct off-axis aberration, avoid the overall length of the lens is too long , Correct the effect of field curvature
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no. 1 example
[0125] Please refer to the first embodiment of the present invention Figure 1A , for the aberration curve of the first embodiment, please refer to Figure 1B . The imaging device of the first embodiment includes an optical system lens group (not another number) and an electronic photosensitive element 170. The optical system lens group includes a first lens 110, an aperture 100, and a second lens in sequence from the object side to the image side. 120. The third lens 130 and the fourth lens 140, wherein:
[0126] The first lens 110 has a negative diopter and is made of plastic. The object side 111 is convex at the near optical axis, and the image side 112 is concave at the near optical axis. Both the object side 111 and the image side 112 are aspherical. ;
[0127] The second lens 120 has a positive diopter and is made of plastic. The object side 121 is convex at the near optical axis, and the image side 122 is convex at the near optical axis. Both the object side 121 and t...
no. 2 example
[0162] Please refer to the second embodiment of the present invention Figure 2A , for the aberration curve of the second embodiment, please refer to Figure 2B . The imaging device of the second embodiment includes an optical system lens group (not another number) and an electronic photosensitive element 270. The optical system lens group includes a first lens 210, an aperture 200, and a second lens in sequence from the object side to the image side. 220, the third lens 230 and the fourth lens 240, wherein:
[0163] The first lens 210 has a negative diopter and is made of plastic. The object side 211 is convex at the near optical axis, the image side 212 is concave at the near optical axis, and both the object side 211 and the image side 212 are aspherical. ;
[0164] The second lens 220 has a positive diopter and is made of plastic. The object side 221 is convex at the near optical axis, and the image side 222 is convex at the near optical axis. Both the object side 221 a...
no. 3 example
[0175] Please refer to the third embodiment of the present invention Figure 3A , for the aberration curve of the third embodiment, please refer to Figure 3B . The imaging device of the third embodiment includes an optical system mirror group (not another number) and an electronic photosensitive element 370. The optical system mirror group includes a first lens 310, an aperture 300, and a second lens in sequence from the object side to the image side. 320, the third lens 330 and the fourth lens 340, wherein:
[0176] The first lens 310 has a negative diopter and is made of plastic. The object side 311 is convex at the near optical axis, the image side 312 is concave at the near optical axis, and both the object side 311 and the image side 312 are aspherical. ;
[0177] The second lens 320 has a positive diopter and is made of plastic. The object side 321 is convex at the near optical axis, and the image side 322 is convex at the near optical axis. Both the object side 321 ...
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