Camera Optical Lens
A technology of optical lens and optical total length, applied in the field of optical lens, can solve the problems of ultra-thin lens, insufficient wide-angle, insufficient setting of lens shape, etc., achieve good optical performance, correct aberrations, and improve optical system performance Effect
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no. 1 approach ）
[0049] 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, and the imaging optical lens 10 includes eight lenses. Specifically, the imaging optical lens 10 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, and eighth lens L8. An optical element such as an optical filter (filter) GF may be disposed between the eighth lens L8 and the image plane Si.
[0050] 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. are made of plastic, the ...
no. 2 approach ）
[0172] 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.
[0173] Such as image 3 As shown, in the second embodiment, in the imaging optical lens 20 , the image side of the third lens L3 is convex at the paraxial position.
[0174] 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 seventh lens L7 are free-form surfaces.
[0175] 【Table 4】
[0176]
[0177] Table 5 shows aspheric surface data of each lens in the imaging optical lens 20 according to the second embodiment of the present invention.
[0178] 【table 5】
[0179]
[0180] Table 6 shows the freeform surface data in the imaging optical lens 20 of the second embodiment of the present invention:
[0181] 【Table 6】
[0182]
[0183] Figure...
no. 3 approach ）
[0187] 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.
[0188] Such as Figure 5 As shown, in the third embodiment, in the imaging optical lens 30, the second lens L2 has a negative refractive power, the sixth lens L6 has a positive refractive power, and the image side of the third lens L3 is convex at the paraxial position; The object side of the four lenses L4 is concave at the paraxial position; the object side of the fifth lens L5 is convex at the paraxial position; the object side of the sixth lens L6 is convex at the paraxial position, and the image side is convex at the paraxial position; the seventh lens The L7 object side is concave at the paraxial position. The aperture S1 is provided between the first lens L1 and the second lens L2.
[0189] Table 7 and Table 8 show design data of the imaging optical lens 30 according to th...
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