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Day and Night Imaging Lens

An imaging lens, a dual-purpose technology, applied in the field of imaging lens, to achieve the effect of compact system structure, reliable quality, and reduced optical total length

Active Publication Date: 2022-03-04
合肥联创光学有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, existing imaging lenses are difficult to meet the above requirements

Method used

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  • Day and Night Imaging Lens

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0083] see figure 1 , which is a schematic structural diagram of the day-night imaging lens 100 provided by the first embodiment of the present invention, which includes: a first lens L1, a second lens L2, a third lens L3, a Four lenses L4, a stop ST, a fifth lens L5, a sixth lens L6, a seventh lens L7, and a filter G1.

[0084] The first lens L1 has a negative refractive power, and both the object side S1 and the image side S2 of the first lens are concave;

[0085] The second lens L2 has negative refractive power, the object side S3 of the second lens is concave, and the image side S4 is convex;

[0086] The third lens L3 has positive refractive power, the object side S5 of the third lens is convex, and the image side S6 of the third lens is convex;

[0087] The fourth lens L4 has a positive refractive power, and both the object side S7 and the image side S8 of the fourth lens are convex;

[0088] The fifth lens L5 has a negative refractive power, and the object side S9 a...

no. 2 example

[0102] The structure of the day and night imaging lens 100 in this embodiment is roughly the same as that of the day and night imaging lens in the first embodiment, the difference lies in: the radius of curvature of each lens in the day and night imaging lens 100 of this embodiment , The choice of material is different, and the relevant parameters of each lens are shown in Table 3.

[0103] table 3

[0104]

[0105] The parameters of each lens aspheric surface in this embodiment are shown in Table 4.

[0106] Table 4

[0107] face number K B C D E F S3 -0.099 3.706E-03 4.903E-04 2.501E-05 -2.666E-06 7.472E-07 S4 -2.350 3.218E-04 3.899E-04 2.795E-06 -7.219E-07 5.358E-07 S12 -0.080 6.040E-04 -1.445E-04 5.745E-05 -9.979E-06 5.816E-07 S13 -0.955 2.029E-03 -2.827E-04 9.341E-05 -1.335E-05 6.602E-07

[0108] The field curvature of the day and night imaging lens provided by this embodiment is as follows: Figure 5 As sh...

no. 3 example

[0111] The structure of the day and night imaging lens 100 in this embodiment is roughly the same as that of the day and night imaging lens in the first embodiment, the difference lies in: the radius of curvature of each lens in the day and night imaging lens 100 of this embodiment , The choice of material is different, and the relevant parameters of each lens are shown in Table 5.

[0112] table 5

[0113]

[0114]

[0115] The parameters of each lens aspheric surface in this embodiment are shown in Table 6.

[0116] Table 6

[0117] face number K B C D E F S3 0.023 2.737E-04 -1.454E-05 4.277E-06 -1.974E-06 2.093E-07 S4 -0.837 1.666E-04 -7.655E-06 -2.372E-06 -7.479E-08 5.993E-08 S12 -2.284 9.079E-04 7.407E-05 -8.274E-05 3.615E-05 -4.809E-06 S13 -8.768 3.655E-03 -1.515E-04 1.702E-05 1.586E-05 -3.107E-06

[0118] The field curvature of the day and night imaging lens provided by this embodiment is as follows: Fi...

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Abstract

The invention discloses a day and night dual-purpose imaging lens, which comprises sequentially from the object side to the imaging surface along the optical axis: a first lens with negative refractive power, the object side and the image side of which are both concave surfaces; The second lens, whose object side is concave, and whose image side is convex; the third lens with positive power, whose object side and image side are both convex; the fourth lens with positive power, whose object side and image side Both are convex; stop; the fifth lens with negative power, its object side and image side are both concave; the sixth lens with positive power, its object side and image side are convex, and the fifth lens It forms a cemented lens with the sixth lens; the seventh lens with positive refractive power has convex surfaces on both the object side and the image side; The day and night dual-purpose imaging lens provided by the present invention has the characteristics of small size, low lens sensitivity, high imaging quality, etc., and has a day and night dual-use function.

Description

technical field [0001] The invention relates to the technical field of imaging lenses, in particular to a day and night imaging lens. Background technique [0002] At present, with the development of automatic driving assistance systems and the intensification of market demand, many countries have successively promulgated relevant policies to promote the development of automatic driving, which has greatly promoted the development of related industries of automatic driving. Key components will also usher in rapid development. [0003] Due to the complex and changeable application environment of automobiles and higher safety performance requirements, higher requirements are placed on the camera lens installed in the automatic driving assistance system, not only to have high-definition imaging quality, but also to ensure different lighting during the day and night High-quality image output under high and low temperature conditions, but also need to have strong environmental ad...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B13/00G02B13/14G02B13/18G02B1/00
CPCG02B13/0045G02B13/006G02B13/008G02B13/14G02B13/18G02B1/00
Inventor 凌兵兵鲍宇旻曾吉勇
Owner 合肥联创光学有限公司