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Image pick-up device, method, and system utilizing a lens having plural regions each with different focal characteristics

a technology of image pick-up device and lens, which is applied in the field of image pick-up apparatus, to achieve the effects of reducing the number of steps, facilitating the manufacturing process, and measuring the accurate distance to an obj

Active Publication Date: 2016-02-23
PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

Enables accurate distance measurement using a single image pickup system, reducing manufacturing complexity and maintaining precision even during movie captures with varying object positions, by utilizing brightness information from multiple focal regions.

Problems solved by technology

While the DFD method is an approach in which the distance is calculated by analyzing the amount of blur of the obtained image, it is not possible with a single image to determine whether it is a pattern of the object itself or a blur caused by the object distance, and therefore methods for estimating the distance from a plurality of images have been used (Patent Document 1, Non-Patent Document 1).

Method used

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  • Image pick-up device, method, and system utilizing a lens having plural regions each with different focal characteristics
  • Image pick-up device, method, and system utilizing a lens having plural regions each with different focal characteristics
  • Image pick-up device, method, and system utilizing a lens having plural regions each with different focal characteristics

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embodiment 1

[0039](Embodiment 1)

[0040]FIG. 1 is a schematic diagram showing an image pickup apparatus A of Embodiment 1. The image pickup apparatus A of the present embodiment includes a lens optical system L whose optical axis is V, an arrayed optical device K arranged in the vicinity of the focal point of the lens optical system L, an image pickup device N, a first signal processing section C1, a second signal processing section C2, and a storage section Me.

[0041]The lens optical system L has six optical regions D1, D2, D3, D4, D5 and D6 (FIG. 1 shows a cross section passing through D2 and D5) having such optical characteristics that focal characteristics are made different from one another, and is composed of an optical device L1 on which light beams B1, B2, B3, B4, B5 and B6 (FIG. 1 shows a cross section passing through B2 and B5) from an object (not shown) are incident, a stop S on which light having passed through the optical device L1 is incident, and a lens L2 on which light having pass...

embodiment 2

[0075](Embodiment 2)

[0076]Embodiment 2 is different from Embodiment 1 in that the region of the optical device L1 is divided in seven. In the present embodiment, similar contents to Embodiment 1 will not herein be described in detail.

[0077]FIG. 14 is a schematic diagram showing Embodiment 2 of the image pickup apparatus A according to the present invention. In FIG. 14, like components to those Embodiment 1 are denoted by like reference numerals. The image pickup apparatus A of the present embodiment includes a lens optical system L whose optical axis is V, an arrayed optical device K arranged in the vicinity of the focal point of the lens optical system L, an image pickup device N, a first signal processing section C1, a second signal processing section C2, and a storage section Me. The lens optical system L has seven optical regions D1, D2, D3, D4, D5, D6 and D7 (FIG. 14 shows a cross section passing through D1, D2 and D5) having such optical characteristics that focal characterist...

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Abstract

An image pickup apparatus includes: a lens optical system including six regions having such optical characteristics that focal characteristics are made different from one another; an image pickup device having a plurality of pixels on which light beams having passed through the lens optical system are incident; and an arrayed optical device for making light beams having passed through the six regions incident respectively on different pixels on the image pickup device.

Description

TECHNICAL FIELD[0001]The present invention relates to an image pickup apparatus such as a camera, and an image pickup method using the image pickup apparatus.BACKGROUND ART[0002]In recent years, distance measurement apparatuses for measuring the distance to an object (an object to which the distance is measured) based on the parallax between a plurality of image pickup optical systems have been used for the following distance measurement for automobiles, auto focus systems for cameras, and three-dimensional shape measurement systems.[0003]In such a distance measurement apparatus, a pair of image pickup optical systems arranged in the left-right direction or in the vertical direction form images on the respective image pickup areas, and the distance to the object is detected through triangulation using the parallax between those images.[0004]The DFD (Depth From Defocus) method is known as a scheme for measuring the distance from a single image pickup optical system to an object. Whil...

Claims

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Application Information

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Patent Type & Authority Patents(United States)
IPC IPC(8): H04N5/225H04N7/18G03B13/36G02B7/38
CPCH04N7/18G03B13/36H04N5/2254G02B7/38
Inventor MURATA, AKIKOIMAMURA, NORIHIRO
Owner PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD