Optical imaging lens
An optical imaging lens and lens technology, applied in the field of lenses, can solve the problems of poor athermalization performance optimization, low relative illumination, uneven image, etc., to ensure clarity and uniformity, high relative illumination, and good use effect. Effect
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Embodiment 1
[0058] Such as figure 1 As shown, an optical imaging lens includes a first lens 1, a second lens 2, a diaphragm 6, a third lens 3, a fourth lens 4, and a fifth lens along an optical axis I from the object side A1 to the image side A2. Lens 5, optical filter 7, protective glass 8 and imaging surface 9; First lens 1 to fifth lens 5 each comprise an object side towards object side A1 and allow imaging light to pass through and an object side towards image side A2 and allow imaging light to pass through Through the like profile.
[0059] The first lens 1 has a negative refractive power, the object side 11 of the first lens 1 is convex, and the image side 12 of the first lens 1 is concave.
[0060] The second lens 2 has positive refractive power, the object side 21 of the second lens 2 is a convex surface, and the image side 22 of the second lens 2 is a plane.
[0061] The third lens 3 has positive refractive power, the object side 31 of the third lens 3 is concave, and the image...
Embodiment 2
[0076] The concave-convex surface and refractive power of each lens in this embodiment and the first embodiment are roughly the same, only the image side 22 of the second lens 2 is a convex surface, and in addition, the optical parameters such as the radius of curvature of each lens surface and lens thickness are also different. .
[0077] In this specific embodiment, the first lens 1 is preferably made of H-ZLAF50E glass material.
[0078] The detailed optical data of this specific embodiment are shown in Table 2-1.
[0079] Detailed optical data of Table 2-1 Example 2
[0080]
[0081] The MTF transfer function curve figure of this specific embodiment sees for details Figure 6 , it can be seen that the design has a high transfer rate, and the resolution can reach 167lp / mm, which ensures the clarity and uniformity of the image; for the relative illuminance curve, please refer to Figure 7 , it can be seen that the relative illuminance is relatively high, greater than 7...
Embodiment 3
[0085] The concave-convex surface and refractive power of each lens in this embodiment and the first embodiment are roughly the same, only the image side 22 of the second lens 2 is a convex surface, and in addition, the optical parameters such as the radius of curvature of each lens surface and lens thickness are also different. .
[0086] In this specific embodiment, the first lens 1 is preferably made of H-ZLAF52 glass material.
[0087] The detailed optical data of this specific embodiment are shown in Table 3-1.
[0088] Detailed optical data of the third embodiment of table 3-1
[0089]
[0090]
[0091] The MTF transfer function curve figure of this specific embodiment sees for details Figure 10 , it can be seen that the design has a high transfer rate, and the resolution can reach 167lp / mm, which ensures the clarity and uniformity of the image; for the relative illuminance curve, please refer to Figure 11 , it can be seen that the relative illuminance is rela...
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