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Camera LENS AND camera APPARATUS

A technology of camera lens and camera device, applied in optical observation devices, transportation and packaging, instruments, etc., can solve problems such as insufficient correction of aberrations

Active Publication Date: 2017-03-08
TIANJIN OFILM OPTO ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In vehicle-mounted cameras, high optical performance is required in order to improve the visibility of the imaging area or to improve the recognition accuracy of obstacles and the like. Imaging lens with corrected various aberrations

Method used

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  • Camera LENS AND camera APPARATUS
  • Camera LENS AND camera APPARATUS
  • Camera LENS AND camera APPARATUS

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0176] Example 1 Lens data

[0177] face number radius of curvature face spacing nd vd 1 20.4734 1.5000 1.75500 52.32 2 4.7938 1.9000 *3 -18.3582 0.7766 1.53409 55.87 *4 3.2853 1.1897 5 8.9279 4.5085 1.71700 47.93 6 -5.0292 0.1500 7 (stop) ∞ 1.0108 *8 4.9124 1.1317 1.63360 23.61 *9 1.9494 3.3347 1.53409 55.87 *10 -5.7128 0.3176 *11 -8.6379 0.9999 1.63360 23.61 *12 -254.2142 2.9451

[0178] 【Table 2】

[0179] Example 1 Various factors (d line)

[0180] f′ 3.12 Bf' 2.95 FNo. 2.08 2ω[°] 122.0

[0181] 【table 3】

[0182] Embodiment 1. Aspheric coefficient

[0183]

[0184]

[0185] Figure 6 Various aberration diagrams of the imaging lens of Example 1 are shown. It should be noted that from Figure 6 Spherical aberration, astigmatism, distortion aberration, and chromatic aberration of magnification are shown ...

Embodiment 2

[0190] Example 2 Lens data

[0191] face number radius of curvature face spacing nd vd 1 21.5732 1.5000 1.75500 52.32 2 3.9583 1.9000 *3 -8.4168 0.7766 1.53409 55.87 *4 6.8498 0.9366 5 13.1042 4.6004 1.71700 47.93 6 -5.0330 0.1500 7 (stop) ∞ 1.1358 *8 4.5986 1.1077 1.63360 23.61 *9 1.9180 3.1308 1.53409 55.87 *10 -6.2822 0.3140 *11 -8.6290 1.0026 1.63360 23.61 *12 503980.0784 3.2304

[0192] 【table 5】

[0193] Example 2. Various factors (d line)

[0194] f′ 3.13 Bf' 3.23 FNo. 2.30 2ω[°] 121.8

[0195] 【Table 6】

[0196] Embodiment 2. Aspheric coefficient

[0197]

[0198]

Embodiment 3

[0201] Example 3 Lens Data

[0202]

[0203] 【Table 8】

[0204] Example 3 Various factors (d line)

[0205] f′ 3.12 Bf' 3.06 FNo. 2.28 2ω[°] 120.8

[0206] 【Table 9】

[0207] Embodiment 3. Aspheric coefficient

[0208]

[0209]

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PUM

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Abstract

An imaging lens is constituted by, in order from the object side to the image side: a first lens having a negative refractive power and a concave surface toward the image side; a second lens having a negative refractive power; a third lens having a positive refractive power and a convex surface toward the image side; a fourth lens having a negative refractive power and a concave surface toward the image side; a biconvex fifth lens which is cemented to the fourth lens; and a sixth lens having a negative refractive power and a concave surface toward the object side.

Description

technical field [0001] The present invention relates to an imaging lens suitable for vehicle-mounted cameras, video cameras, and the like, and an imaging device including the imaging lens. Background technique [0002] In recent years, cameras have been mounted on vehicles, and are used to assist in the confirmation of blind spots such as the driver's side and rear, or for image recognition of cars, pedestrians, obstacles, etc. around the vehicle. As an imaging lens that can be used in such a vehicle-mounted camera, for example, an imaging lens described in Patent Document 1 below is known. Patent Document 1 discloses a six-element lens system. [0003] prior art literature [0004] Patent Document 1: Specification of Taiwan Patent Application Publication No. 201428336 [0005] In vehicle-mounted cameras, high optical performance is required in order to improve the visibility of the imaging area or to improve the recognition accuracy of obstacles, etc., but the correction...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B13/18G02B27/00
CPCG02B13/18G02B27/0025G02B13/06B60R2300/802B60R2300/8093G02B9/60
Inventor 森将生
Owner TIANJIN OFILM OPTO ELECTRONICS CO LTD