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Zoom lens and shooting equipment including the zoom lens

A technology of zoom lens and shooting equipment, which is applied in the direction of lens, focusing device, color TV parts, etc., and can solve problems such as difficult correction of aberration and slow auto focus

Inactive Publication Date: 2017-06-09
SAMSUNG ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if the focus lens group is heavy, the autofocus will be slower
On the other hand, if the focusing lens group is light, aberration correction of astigmatic curvature of field becomes difficult

Method used

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  • Zoom lens and shooting equipment including the zoom lens
  • Zoom lens and shooting equipment including the zoom lens
  • Zoom lens and shooting equipment including the zoom lens

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0084] figure 1 is a diagram of the zoom lens 100 according to Example 1 at a wide-angle position, an intermediate position, and a telephoto position, and Table 1 below shows design data. figure 1 The reference number of the lens surface of each lens is shown, but the reference number of the lens surface is omitted in the drawings of other examples.

[0085] f: 12.36 to 17.00 to 23.28 fno: 4.1 to 4.73 to 5.8 2ω: 103° to 82° to 64°

[0086] [Table 1]

[0087] lens surface R Dn Nd vd 1 33.480 3.500 1.77250 49.6 2 13.585 8.031 3 363.241 3.000 1.77250 49.6 4* 14.785 D1 5 41.413 3.000 1.84666 23.8

[0088] 6 252.681 D2 7 32.111 1.000 1.84666 23.8 8 21.588 3.000 1.54814 45.8 9 -69.778 D3 10 gigantic 1.000 11 12.571 2.000 1.48749 70.4 12 -20.081 1.000 1.77250 49.6 13 -40.683 4.652 14* -21.445 2.400 1.48749 70.2 15 -10.823 0.800...

example 2

[0097] image 3 is a diagram of the zoom lens 100 according to Example 2, and Table 4 below shows design data. f: 12.36 to 17.00 to 23.40 fno: 4.1 to 4.73 to 5.8 2ω: 103° to 82° to 64°

[0098] [Table 4]

[0099] lens surface R Dn Nd vd 1 38.412 3.000 1.77250 49.6 2 13.802 8.222 3* 836.077 1.700 1.77250 49.6 4* 14.967 D1 5 40.557 3.000 1.84666 23.8 6 173.187 D2 7 35.160 0.800 1.84666 23.8 8 26.500 3.000 1.54814 45.8 9 -70.576 D3 10 gigantic 1.000 11 14.490 2.000 1.49700 81.6 12 73.143 5.335 13 17.625 2.400 1.48749 70.4 14 -24.134 0.800 15 -17.784 1.200 1.79952 42.2 16 12.221 7.945 1.48749 70.4 17 -13.858 1.000 18 -19.561 1.500 1.77250 49.6 19* -32.460

[0100] In Example 2, Table 5 shows the aspheric coefficients.

[0101] [table 5]

[0102]

[0103]

[0104] Table 6 below shows...

example 3

[0109] Figure 5 is a diagram of the zoom lens 100 according to Example 3, and Table 7 below shows design data. f: 12.36 to 17.00 to 23.28 fno: 4.1 to 4.73 to 5.8 2ω: 103° to 82° to 64°

[0110] [Table 7]

[0111] lens surface R Dn Nd vd 1 40.460 3.352 1.77250 49.6 2 13.816 8.191 3* 881.987 2.964 1.80450 39.6 4* 14.678 D1 5 37.699 3.000 1.84666 23.8 6 654.674 D2 7 39.542 0.800 1.84666 23.8 8 29.233 3.000 1.54814 45.8 9 -64.786 D3 10 gigantic 1.000 11 13.938 2.000 1.49700 81.6 12 46.828 5.971 13 16.096 2.400 1.48749 70.4

[0112] 14 -21.177 0.800 15 -15.876 1.200 1.79952 42.2 16 12.219 6.671 1.48749 70.4 17 -12.135 1.000 18 -16.671 1.500 1.77250 49.6 19* -29.185

[0113] Table 8 below shows the aspheric coefficients in Example 3.

[0114] [Table 8]

[0115]

[0116] Table 9 ...

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Abstract

Provided are a zoom lens and a photographing device including the zoom lens. The zoom lens includes in order from the object side: a first lens group with negative refractive power; a second lens group with positive refractive power; a third lens group with positive refractive power; a fourth lens group with has an iris stop on the side closest to the object side, and the fourth lens group has positive refractive power, wherein, when zooming from the wide-angle position to the telephoto position, the first to fourth lens groups are moved so that the fourth lens group The distance between the first lens group and the second lens group increases, the distance between the second lens group and the third lens group decreases, the distance between the third lens group and the fourth lens group decreases, by moving the third lens group to perform focusing.

Description

[0001] This application claims the benefit of Korean Patent Application No. 10-2012-0024545, filed with the Korean Intellectual Property Office on March 9, 2012, the disclosure of which is incorporated herein by reference in its entirety. technical field [0002] Embodiments relate to a zoom lens capable of fast focusing by using a light-weight focusing lens group and a photographing apparatus including the zoom lens. Background technique [0003] In an optical system using a solid-state image pickup device, such as a charge-coupled device (CCD) digital camera, an interchangeable lens, or a video camera, users require not only high resolution but also a wide viewing angle and high magnification. In addition, the number of professional camera users continues to increase. According to such market demand, the lens interchangeable camera should use an ultra-wide angle of view zoom lens with an angle of view of over 90° to capture high-quality photos via autofocus. However, if t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B15/177G02B3/02H04N5/225
CPCG02B13/06G02B13/04G02B15/144515G03B13/36G02B7/04G03B3/10G03B17/12H04N23/55G02B13/009G02B13/18
Inventor 有本哲也
Owner SAMSUNG ELECTRONICS CO LTD
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