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Optical system and imaging device

An optical system, optical technology, applied in the direction of optics, optical components, components of TV systems, etc., can solve problems such as no disclosure, no hint, etc.

Inactive Publication Date: 2007-12-12
KONICA MINOLTA OPTO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the above-mentioned documents, when a refraction variable optical element utilizing the "electrowetting phenomenon" is used to constitute an imaging optical system capable of autofocus, how to suppress the aberration of the entire optical system, that is, there is no overt nor implied

Method used

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  • Optical system and imaging device
  • Optical system and imaging device
  • Optical system and imaging device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0196] Regarding the optical system in Example 1, the lens data are shown in Tables 1 and 2, and the cross-sectional view of the optical system when an object at infinity is photographed is shown in Fig. 13(a), and the aberration diagram at this time is shown in Fig. 13(a). Fig. 13(a) shows a cross-sectional view of the optical system when an object with a distance of 5 cm is photographed (the absolute value of the radius of curvature of the interface B of the variable refraction optical element QL has a minimum value) is shown in Fig. 13(b). The aberration at this time is shown in Fig. 14(b).

[0197] (Table 1)

[0198] (Example)

[0199] F=2.88 2Y=5.00mm

[0200] Face number

R(mm)

D(mm)

Nd

d

1

∞

0.20

1.51633

64.1

2

∞

0.40

1.33300

55.0

3

Kechang

0.40

1.51510

41.5

4

∞

0.20

1.51633

64.1 ...

Embodiment 2

[0217] For the optical system in Example 2, the lens data are shown in Table 5 and Table 6. The cross-sectional view of the optical system when photographing an object at infinity is shown in Fig. 17(a), and the aberration diagram at this time is shown in Fig. 18(a). In addition, when the object is photographed at a distance of 5cm (refraction variable optical The cross-sectional view of the optical system in which the absolute value of the radius of curvature of the interface B of the element QL has a minimum value is shown in FIG. 17(b), and the aberration at this time is shown in FIG. 18(b). In Embodiment 2, the closing plates 2 and 6 of the variable refraction optical element QL are provided with refractive power.

[0218] (table 5)

[0219] (Example 2)

[0220] Aspheric coefficient

[0221] F=2.88 2Y=5.00mm

[0222] Face number

[0223] Aspheric coefficient

[0224] A8=3.40250xE-01

[0225] (Table 6)

[0226] T(mm)

[0227] Comparing ...

Embodiment 3

[0229] For the optical system in Example 3, the lens data are shown in Table 7 and Table 8. And when an object at infinity is photographed (the absolute value of the radius of curvature of the interface B of the variable refraction optical element QL has a minimum value), the cross-sectional view of the optical system is shown in Fig. 19(a), and the aberration diagram at this time is shown in Fig. 19(a). 20(a) is shown. In addition, the cross-sectional view of the optical system when an object with a subject distance of 5 cm is photographed is shown in FIG. 19(b), and the aberration at this time is shown in FIG. 20(b). In Embodiment 3, the closing plates 2 and 6 of the variable refraction optical element QL are also provided with refractive power.

[0230] (Table 7)

[0231] (Example)

[0232] F=2.88 2Y=5.00mm

[0233] Face number

R(mm)

D(mm)

Nd

d

1

10.403

0.50

1.51633

64.1

2

∞

0.40

1.51510

41.5

...

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PUM

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Abstract

An imaging device includes a substrate, an imaging element, an imaging optical element, a light shielding member for covering the imaging element and the imaging optical element, a control device, and a refractive function variable optical component. The refractive function variable optical component has configuration as follows. A first fluid having electro-conductivity and a second fluid having insulation characteristic have different refraction factors and no affinity to each other but have the same density. Both of the fluids are filled and sealed in an external member made of an insulation material and having an opening for passing a light flux. By applying voltage between the first electrode in contact with the first fluid and the second electrode arranged on the external member, it is possible to change the wettability of the external member with respect to the second fluid and change the filled shape of the second fluid in the external member.

Description

Technical field [0001] The present invention relates to a small imaging device and imaging optical system used in mobile phones, personal computers, PDAs, surveillance cameras, sensor cameras, and the like. In particular, it relates to a small image pickup device and an image pickup optical system using a solid-state image sensor such as a CCD image sensor or a CMOS image sensor. Background technique [0002] Conventional CCD (Charged Coupled Device) type image sensors and CMOS (Complementary Metal Oxide Semiconductor) type image sensors and other imaging elements (optoelectronic conversion elements), these are compact imaging devices integrated with the photographic lens The devices are well known and used for various purposes such as mobile phones and PDAs (Personal Digital Assistance). This type of imaging device is particularly popular in mobile phones recently, and the image quality of the imaging element used therein has been significantly improved. Moreover, it is hoped th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B7/02G02B3/14H04N5/225G02B13/00H01L27/14H04N25/00
CPCG02B26/005
Inventor 新勇一森伸芳古后将司佐野永悟
Owner KONICA MINOLTA OPTO