Camera Optical Lens
A technology of optical lens and optical total length, which is applied in the field of optical lens, can solve the problems of inability to correct off-axis aberration, insufficient ultra-thin lens and wide-angle lens, insufficient setting of lens shape, etc., to achieve correction of astigmatism and distortion, The effect of good optical properties
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no. 1 approach ）
[0027] Referring to the accompanying drawings, the present invention provides an imaging optical lens 10 . figure 1 Shown is the imaging optical lens 10 of the first embodiment of the present invention. Specifically, the imaging optical lens 10 includes seven lenses in total, and the seven lenses are sequentially from the object side to the image side: the first lens L1, Aperture S1, second lens L2, third lens L3, fourth lens L4, fifth lens L5, sixth lens L6, seventh lens L7. An optical element such as an optical filter (filter) GF may be disposed between the seventh lens L7 and the image plane Si.
[0028] In this embodiment, the first lens L1 is made of plastic material, the second lens L2 is made of plastic material, the third lens L3 is made of plastic material, the fourth lens L4 is made of plastic material, the fifth lens L5 is made of plastic material, and the sixth lens L6 is made of plastic material. It is made of plastic, and the seventh lens L7 is made of plastic. ...
no. 2 approach ）
[0143] The second embodiment is basically the same as the first embodiment, and the meanings of the symbols are the same as those of the first embodiment, and only the differences are listed below.
[0144] In this embodiment, the third lens L3 has positive refractive power, the object side of the first lens L1 is convex at the paraxial position, the image side of the third lens L3 is convex at the paraxial position, and the image side of the fifth lens L5 is convex. Concave near the axis.
[0145] Table 4 and Table 5 show design data of the imaging optical lens 20 according to the second embodiment of the present invention. Wherein, the object side and the image side of the first lens L1 are free curved surfaces.
[0146] 【Table 4】
[0147]
[0148] Table 5 shows aspheric surface data of each lens in the imaging optical lens 20 according to the second embodiment of the present invention.
[0149] 【table 5】
[0150]
[0151] Table 6 shows free-form surface data in th...
no. 3 approach ）
[0158] The third embodiment is basically the same as the first embodiment, and the meanings of the symbols are the same as those of the first embodiment, and only the differences are listed below.
[0159] In this embodiment, the imaging optical lens 30 includes in sequence from the object side to the image side: a first lens L1, a second lens L2, an aperture S1, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens Lens L6, seventh lens L7.
[0160] In this embodiment, the third lens L3 has positive refractive power, the image side of the second lens L2 is concave at the paraxial position, the object side of the third lens L3 is convex at the paraxial position, and the image side of the third lens L3 is concave. It is a convex surface at the paraxial position, and the object side surface of the fourth lens L4 is a concave surface at the paraxial position.
[0161] Table 7 and Table 8 show design data of the imaging optical lens 30 according to the third embodiment...
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