Optical system, lens module and terminal equipment
An optical system and lens technology, applied in optics, optical components, instruments, etc., can solve the problem that the overall pixel is difficult to be guaranteed, and achieve the effect of being conducive to long-distance observation, correcting aberrations, and improving resolution capabilities.
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Embodiment 1
[0071] Such as figure 2 As shown, the straight line in the middle indicates the optical axis, the left side of the optical system is the object side, and the right side is the image side. In the optical system provided by this embodiment, from the object side to the image side, there are first lens L1, second lens L2, third lens L3, fourth lens L4, diaphragm STO, fifth lens L5, and sixth lens L6, seventh lens L7, and cover glass CG.
[0072] The first lens L1 has negative refractive power and is made of glass. The object-side surface S1 is convex, and the image-side surface S2 is concave, both of which are spherical.
[0073] The second lens L2 has a positive refractive power and is made of glass. The object-side surface S3 is convex, and the image-side surface S4 is concave, both of which are spherical.
[0074] The third lens L3 has a positive refractive power and is made of glass. The object-side surface S5 is convex, and the image-side surface S6 is a plane, both of whi...
Embodiment 2
[0095] Such as Figure 6 As shown, the straight line in the middle indicates the optical axis, the left side of the optical system is the object side, and the right side is the image side. In the optical system provided by this embodiment, from the object side to the image side, there are first lens L1, second lens L2, third lens L3, fourth lens L4, diaphragm STO, fifth lens L5, and sixth lens L6, seventh lens L7, and cover glass CG.
[0096] The first lens L1 has a negative refractive power and is made of glass. The object-side surface S1 is concave, and the image-side surface S2 is concave, both of which are spherical.
[0097] The second lens L2 has a positive refractive power and is made of glass. The object-side surface S3 is convex, and the image-side surface S4 is convex, both of which are spherical.
[0098] The third lens L3 has a positive refractive power and is made of glass. The object-side surface S5 is convex, and the image-side surface S6 is concave, both of w...
Embodiment 3
[0118] Such as Figure 10 As shown, the straight line in the middle indicates the optical axis, the left side of the optical system is the object side, and the right side is the image side. In the optical system provided by this embodiment, from the object side to the image side, there are first lens L1, second lens L2, third lens L3, fourth lens L4, diaphragm STO, fifth lens L5, and sixth lens L6, seventh lens L7, and cover glass CG.
[0119] The first lens L1 has a negative refractive power and is made of glass. The object-side surface S1 is concave, and the image-side surface S2 is concave, both of which are spherical.
[0120] The second lens L2 has a positive refractive power and is made of glass. The object-side surface S3 is convex, and the image-side surface S4 is convex, both of which are spherical.
[0121] The third lens L3 has a positive refractive power and is made of glass. The object-side surface S5 is convex, and the image-side surface S6 is concave, both of ...
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