Optical system, camera module and electronic equipment
A technology of optical system and optical axis, applied in the direction of optics, optical components, instruments, etc.
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no. 1 example
[0086] refer to figure 1 and figure 2 , in the first embodiment, the optical system 10 includes a stop STO, a first lens L1 with positive refractive power, a second lens L2 with negative refractive power, and a second lens L2 with negative refractive power from the object side to the image side along the optical axis 101. The third lens L3 with positive refractive power and the fourth lens L4 with positive refractive power. The first lens L1 and the second lens L2 form a lens group with positive refractive power, and the third lens L3 and the fourth lens L4 form a lens group with negative refractive power. figure 2 It includes the longitudinal spherical aberration diagram, astigmatism diagram and distortion diagram of the optical system 10 in the first embodiment, wherein the reference wavelength of the astigmatism diagram and distortion diagram is 587nm.
[0087]The object side S1 of the first lens L1 is convex at the paraxial position, and the image side S2 is convex at ...
no. 2 example
[0111] refer to image 3 and Figure 4 , in the second embodiment, the optical system 10 includes a diaphragm STO, a first lens L1 with positive refractive power, a second lens L2 with negative refractive power, and a second lens L2 with negative refractive power along the optical axis 101 from the object side to the image side. The third lens L3 with positive refractive power and the fourth lens L4 with positive refractive power. The first lens L1 and the second lens L2 form a lens group with positive refractive power, and the third lens L3 and the fourth lens L4 form a lens group with negative refractive power. Figure 4 It includes the longitudinal spherical aberration diagram, the astigmatism diagram and the distortion diagram of the optical system 10 in the second embodiment, wherein the reference wavelength of the astigmatism diagram and the distortion diagram is 587 nm.
[0112] The object side S1 of the first lens L1 is convex at the paraxial position, and the image ...
no. 3 example
[0125] refer to Figure 5 and Figure 6 , in the third embodiment, the optical system 10 includes a stop STO, a first lens L1 with positive refractive power, a second lens L2 with negative refractive power, and a second lens L2 with negative refractive power along the optical axis 101 from the object side to the image side. The third lens L3 with positive refractive power and the fourth lens L4 with positive refractive power. The first lens L1 and the second lens L2 form a lens group with positive refractive power, and the third lens L3 and the fourth lens L4 form a lens group with negative refractive power. Figure 6 The longitudinal spherical aberration diagram, astigmatism diagram and distortion diagram of the optical system 10 in the third embodiment are included, wherein the reference wavelength of the astigmatism diagram and distortion diagram is 587 nm.
[0126] The object side S1 of the first lens L1 is convex at the paraxial position, and the image side S2 is concav...
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