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Imaging device, imaging method, and recording medium

A camera device and image technology, applied in the field of camera device, camera method and image processing program, can solve the problem of not having angular characteristics and the like

Active Publication Date: 2020-06-19
FUJIFILM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the second light receiving unit of the orientation sensor described in Patent Document 3 does not originally have an angular characteristic in light detection sensitivity, so the second image acquired from the second light receiving unit contains disturbances representing the first characteristic of the complex lens. Element

Method used

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  • Imaging device, imaging method, and recording medium
  • Imaging device, imaging method, and recording medium
  • Imaging device, imaging method, and recording medium

Examples

Experimental program
Comparison scheme
Effect test

no. 1 Embodiment approach

[0068] image 3 It is a diagram showing the cross-sectional structures of the complex lens 11 and the image sensor 24 according to the first embodiment.

[0069] In this example, the complex lens 11 includes a first region having a first characteristic and a second region having a second characteristic different from the first characteristic, and in this embodiment, the first optical system 21 corresponding to the first region and the second optical system 22 corresponding to the second area. In addition, the focal lengths (an example of optical characteristics) of the first optical system 21 and the second optical system 22 are different, and the optical axis L is shared. Furthermore, the first optical system 21 is a wide-angle lens, and the second optical system 22 is a telephoto lens.

[0070] image 3 The illustrated first optical system (wide-angle lens) 21 includes a first wide-angle lens 21a, a second wide-angle lens 21b, a third wide-angle lens 21c, a fourth wide-an...

no. 2 Embodiment approach

[0139] Figure 17 It is a figure for demonstrating the imaging mechanism using the complex lens 11 which concerns on 2nd Embodiment.

[0140] Figure 17 The shown complex lens 11 is composed of a circular first optical system 21 and an annular second optical system 22 arranged concentrically with respect to the first optical system 21. The light from the first optical system 21 and the second optical system The axes are shared, but the focus distance is different.

[0141] Figure 17 In , the content indicated by each reference symbol is as follows.

[0142] a1: the distance between the lens and the light receiving surface of the first optical system 21 (far focus area 60a)

[0143] a2: Distance between the lens and the light receiving surface of the second optical system 22 (near focus area 60b)

[0144] b1: distance between the lens of the first optical system 21 (far focus area 60a) and the subject

[0145] b2: distance between the lens of the second optical system 22...

no. 3 Embodiment approach

[0156] Figure 18 It is a graph showing modulation transfer function characteristics (MTF: Modulation Transfer Function) of the first optical system and the second optical system of the complex lens (not shown) according to the third embodiment.

[0157] In the complex lens according to the third embodiment, the first optical system and the second optical system have the same focal length and focusing distance, but have different MTFs, and the first optical system has Figure 18 The first MTF shown in the MTF curve a, the second optical system has Figure 18 The first 2MTF shown in the MTF curve b. In addition, the complex lens according to the third embodiment can be, for example, the appearance shape and Figure 17 The complex lens 11 shown is substantially the same.

[0158] according to Figure 18 In the MTF curve a shown, the first optical system having the first MTF has higher resolution but lower contrast than the second optical system having the second MTF. On the...

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Abstract

The present invention provides an imaging device, an imaging method, and a recording medium capable of simultaneously capturing images corresponding to characteristics of a complex lens having a plurality of characteristics using an image sensor having the same structure as a general image sensor. The imaging device of the present invention has: a complex lens including a first region having a first characteristic and a second region having a second characteristic different from the first characteristic; A light-receiving element (25A) and a second light-receiving element (25B) having a second microlens having an imaging magnification different from that of the first microlens; The first disturbance image and the second disturbance image obtained by the second light-receiving element remove disturbance components to generate a first image and a second image respectively having the first characteristic and the second characteristic of the complex lens.

Description

technical field [0001] The present invention relates to an imaging device, an imaging method and an image processing program, in particular to an imaging device, an imaging method and an image processing program capable of simultaneously acquiring multiple images with different characteristics. Background technique [0002] Conventionally, there has been proposed an imaging device including: a complex lens including a first area having a first characteristic and a second area having a second characteristic different from the first characteristic; and an orientation sensor for detecting a second area transmitted through the complex lens The light beams in the first area and the light beams passing through the second area are pupil-divided to receive the light beams, and a first image having the first characteristic and a second image having the second characteristic can be simultaneously acquired (Patent Document 1 and Patent Document 2). ). [0003] Here, the orientation se...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N5/232G02B3/00G02B13/04G02B17/08G03B15/00G03B19/00H04N5/225
CPCG02B13/04G02B3/00G02B17/08G03B15/00G03B19/00H04N13/236H01L27/14627H01L27/14636H01L27/14643H04N23/695H04N23/00G02B3/10G02B3/14G03B13/32G03B17/06
Inventor 小野修司
Owner FUJIFILM CORP
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