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Wide-angle lens, imaging optical device, and digital instrument

A wide-angle lens and lens technology, applied in optics, optical components, image communication, etc., can solve the problem of difficult and difficult correction of camera lens aberration, and achieve the effect of compact image input function

Active Publication Date: 2014-04-09
KONICA MINOLTA INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since it is not easy to eliminate various aberrations at a wide angle of view, the wider the angle of view, the more difficult it is to correct the aberrations of the imaging lens.

Method used

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  • Wide-angle lens, imaging optical device, and digital instrument
  • Wide-angle lens, imaging optical device, and digital instrument
  • Wide-angle lens, imaging optical device, and digital instrument

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0113] Unit: mm

[0114] surface data

[0115]

[0116] Aspheric Data

[0117] side 1

[0118] K=-4.4454

[0119] A4=1.8693E-01

[0120] A6=-1.0309E-01

[0121] A8=3.1896E-02

[0122] A10=-5.3730E-03

[0123] A12=3.7119E-04

[0124] side 2

[0125] K=-0.9695

[0126] A4=-1.4167E-01

[0127] A6=1.1909E+00

[0128] A8=1.9960E+00

[0129] A10=-6.6935E+00

[0130] A12=3.7841E+00

[0131] side 3

[0132] K=-7.6314

[0133] A4=8.6720E-01

[0134] A6=-8.1847E-01

[0135] A8=2.1451E+00

[0136] A10=-2.9601E+00

[0137] A12=1.7395E+00

[0138] side 4

[0139] K=8.9454

[0140] A4=6.3583E-01

[0141] A6=5.0909E+00

[0142] A8=-5.0652E+0 1

[0143] A10=3.0512E+02

[0144] A1 2=-3.3482E+02

[0145] side 6

[0146] K=-7.31 81

[0147] A4=1.7392E-02

[0148] A6=-1.2890E-01

[0149] A8=2.1 736E+01

[0150] A10=-1.8100E+02

[0151] A12=5.3204E+02

[0152] side 7

[0153] K=-1.0924

[0154] A4=-3.0230E-01

[0155] A6=1.8436E+00

[0156] A8=-1.0723E+01 ...

Embodiment 2

[0187] Unit: mm

[0188] surface data

[0189]

[0190] Aspheric Data

[0191] side 1

[0192] K=-30.0000

[0193] A4=7.6087E-02

[0194] A6=-2.3937E-02

[0195] A8=3.9618E-03

[0196] A10=-2.8674E-04

[0197] A12=2.3678E-06

[0198] side 2

[0199] K=-15.1379

[0200] A4=6.7225E-02

[0201] A6=-1.9252E-02

[0202] A8=2.3181E-01

[0203] A10=-2.3148E-01

[0204] A12=5.9945E-02

[0205] side 3

[0206] K=-23.3970

[0207] A4=4.8710E-03

[0208] A6=2.0970E-01

[0209] A8=-3.1379E-01

[0210] A10=9.2220E-02

[0211] A12=1.4624E-02

[0212] side 4

[0213] K=-18.0686

[0214] A4=-1.2120E-01

[0215] A6=1.7028E-01

[0216] A8=-2.6558E-02

[0217] A10=-6.9633E-02

[0218] A12=-4.2874E-08

[0219] side 6

[0220] K=-0.3536

[0221] A4=-6.7836E-01

[0222] A6=9.3213E+00

[0223] A8=-8.2453E+01

[0224] A1 0=2.6075E+02

[0225] A1 2=-3.51 74E-09

[0226] side 7

[0227] K=-1.5068

[0228] A4=-6.2776E-01

[0229] A6=1.6530E+00

[0230] A8=-5.4083...

Embodiment 3

[0261] Unit: mm

[0262] surface data

[0263]

[0264] Aspheric data

[0265] side 1

[0266] K=-7.7968

[0267] A4=7.5306E-02

[0268] A6=-2.5858E-02

[0269] A8=3.9431E-03

[0270] A10=-2.7115E-04

[0271] A12=6.4426E-06

[0272] side 2

[0273] K=-3.1684

[0274] A4=4.2716E-01

[0275] A6=-1.6116E-01

[0276] A8=1.6143E-01

[0277] A1 0=-2.5469E-01

[0278] A12=1.0571E-01

[0279] side 3

[0280] K=-1.2197

[0281] A4=-1.4972E-01

[0282] A6=1.7074E-01

[0283] A8=-1.5732E-01

[0284] A1 0=2.6626E-02

[0285] A12=3.0164E-02

[0286] side 4

[0287] K=-29.9964

[0288] A4=7.3984E-02

[0289] A6=9.1018E-01

[0290] A8=-4.8 649E+00

[0291] A10=1.3763E+01

[0292] A12=-6.8099E-10

[0293] side 6

[0294] K=-29.9997

[0295] A4=-3.5956E-02

[0296] A6=4.9353E-01

[0297] A8=-3.6602E-01

[0298] A1 0=-1.5438E+00

[0299] A12=-3.1260E-09

[0300] side 7

[0301] K=-5.0854

[0302] A4=-7.5423E-01

[0303] A6=1.3461E+00

[0304] A8=-1.8782E+0...

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Abstract

This wide-angle lens for forming an image on an imaging element, in which an imaging surface has a curved shape with a concave surface toward the object, comprises, in order from the object: a first lens, a second lens, an aperture, a third lens, and a fourth lens; the full angular field of view being at least 120 DEG ; and each of the first through fourth lenses having at least one aspheric surface. The first lens has a negative power, and the second lens has a positive power and has a meniscus shape with a convex surface facing the object. The third lens has a positive power, and the fourth lens is shaped such that a concave surface faces the object.

Description

technical field [0001] The invention relates to a wide-angle lens, an imaging optical device and digital equipment. More specifically, it relates to a small wide-angle lens that forms an optical image of an object on a curved imaging surface (ie, a light-receiving surface) of an imaging element, and uses the wide-angle lens and the imaging element to capture the image of the object as an electronic image. An imaging optical device for signal output, a digital camera equipped with the imaging optical device, a surveillance camera, and other digital equipment with an image input function. Background technique [0002] In recent years, digital devices having an image input function, such as mobile phones and mobile information terminals equipped with imaging optical devices, have been popularized along with higher performance and miniaturization of imaging elements. Along with this, the imaging lens mounted on the imaging optical device is also being further enhanced in perfor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B13/00G02B13/18H04N5/225H04N5/369
CPCG02B13/004G02B13/06
Inventor 广瀬全利
Owner KONICA MINOLTA INC
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