Optical system, camera module and electronic equipment
An optical system and optical axis technology, which is applied in the fields of optical systems, camera modules and electronic equipment, can solve the problems that the size of the effective pixel area of the lens is difficult to take into account at the same time, and the shooting effect is not good.
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no. 1 example
[0056] Please refer to Figure 1a and Figure 1b , the optical system of this embodiment, from the object side to the image side, includes:
[0057] The first lens L1 has a positive refractive power. The object side S1 of the first lens L1 is convex at the optical axis and concave at the circumference; the image side S2 of the first lens L1 is convex at the optical axis and at the circumference;
[0058] The second lens L2 has a negative refractive power, and the object side S3 of the second lens L2 is convex at the optical axis and at the circumference; the image side S4 of the second lens L2 is concave at the optical axis and at the circumference;
[0059] The third lens L3 has positive refractive power. The object side S15 of the third lens L3 is concave at the optical axis and convex at the circumference; the image side S6 of the third lens L3 is convex at the optical axis and at the circumference. ;
[0060] The fourth lens L4 has negative refractive power. The object s...
no. 2 example
[0077] Please refer to Figure 2a and Figure 2b , the optical system of this embodiment, from the object side to the image side, includes:
[0078] The first lens L1 has positive refractive power. The object side S1 of the first lens L1 is convex at the optical axis and concave at the circumference; the image side S2 of the first lens L1 is convex at the optical axis and at the circumference. ;
[0079] The second lens L2 has a positive refractive power, and the object side S3 of the second lens L2 is convex at the optical axis and at the circumference; the image side S4 of the second lens L2 is concave at the optical axis and at the circumference;
[0080] The third lens L3 has a positive refractive power. The object side S5 of the third lens L3 is concave at the optical axis and convex at the circumference, and the image side S6 of the third lens L3 is convex at the optical axis and at the circumference. ;
[0081] The fourth lens L4 has negative refractive power. The o...
no. 3 example
[0095] Please refer to Figure 3a and Figure 3b , the optical system of this embodiment, from the object side to the image side, includes:
[0096] The first lens L1 has a positive refractive power. The object side S1 of the first lens L1 is convex at the optical axis and concave at the circumference; the image side S2 of the first lens L1 is concave at the optical axis and is concave at the circumference. Convex;
[0097] The second lens L2 has a positive refractive power, and the object side S3 of the second lens L2 is convex at the optical axis and at the circumference; the image side S4 of the second lens L2 is concave at the optical axis and at the circumference;
[0098] The third lens L3 has positive refractive power. The object side S5 of the third lens L3 is concave at the optical axis and convex at the circumference; the image side S6 of the third lens L3 is convex at the optical axis and at the circumference. ;
[0099] The fourth lens L4 has negative refractiv...
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