JP2015114544A5

JP2015114544A5 -

Info

Publication number: JP2015114544A5
Application number: JP2013257168A
Authority: JP
Filing date: 2013-12-12
Publication date: 2017-01-26
Anticipated expiration: 2033-12-12

Description

本発明によれば、フォーカスレンズを有する撮影光学系で形成された被写体像を光電変換して撮影画像を生成するための第１の画素信号を生成する第１の画素と、撮影光学系の瞳領域の異なる部分領域からの被写体像を光電変換して第２の画素信号を生成する第２の画素とを含む二次元画素配列を有する撮像手段と、第１の画素で生成された第１の画素信号および第２の画素で生成された第２の画素信号を、それぞれ異なる読み出しレートで読み出す読み出し手段と、第１の出力系と第２の出力系とを有し、読み出し手段で読み出された画素信号が第１の画素信号または第２の画素信号であるかどうかに従って、第１の出力系と第２の出力系とを切り替えて画素信号を出力する出力手段とを備えることを特徴とする撮像装置が提供される。
According to the present invention, the first pixel that generates the first pixel signal for photoelectrically converting the subject image formed by the imaging optical system having the focus lens to generate the captured image, and the pupil of the imaging optical system An imaging means having a two-dimensional pixel array including a second pixel that photoelectrically converts subject images from different partial areas to generate a second pixel signal; and a first generated by the first pixel The pixel signal and the second pixel signal generated by the second pixel have readout means for reading out at different readout rates, a first output system and a second output system, and are read out by the readout means. according to whether the pixel signal is the first pixel signal or the second pixel signals, and an outputting means for switching a first output system and a second output system for outputting a pixel signal An imaging device is provided .

Claims

A first pixel that generates a first pixel signal for photoelectrically converting a subject image formed by a photographing optical system having a focus lens to generate a photographed image, and different partial regions of the pupil region of the photographing optical system Imaging means having a two-dimensional pixel array including a second pixel that photoelectrically converts a subject image from the second pixel signal to generate a second pixel signal;
Reading means for reading the first pixel signal generated by the first pixel and the second pixel signal generated by the second pixel at different reading rates;
A first output system and a second output system, wherein the first pixel signal is read out by the reading means according to whether the pixel signal is the first pixel signal or the second pixel signal. Output means for switching the output system and the second output system to output the pixel signal;
An imaging apparatus comprising:

The imaging apparatus according to claim 1, wherein the output unit determines whether to output the second pixel signal according to a state of the photographing optical system.

The photographing optical system has a diaphragm, the state of the photographing optical system is a diaphragm value of the diaphragm, and the output means outputs the second pixel signal when the diaphragm value is larger than a predetermined value. The imaging apparatus according to claim 2, wherein the imaging device is not output.

Using the pixel signals said output means has outputted, the imaging further comprises a signal processing means for generating an evaluation value for performing focusing of the image and the focus lens, the signal processing means, the aperture value When the output means outputs the second pixel signal, the evaluation value is generated using the second pixel signal, and when the second pixel signal is not output, the first pixel signal is output. The image pickup apparatus according to claim 3, wherein the evaluation value is generated using a pixel signal of the above.

When the signal processing means generates the evaluation value using the second pixel signal, a pixel signal obtained by performing an averaging process on the second pixel signal generated by a plurality of exposures is obtained. The imaging apparatus according to claim 4, wherein the evaluation value is generated by using the imaging apparatus.

It said signal processing means, when generating the evaluation value using the second pixel signal, using the picture element signal obtained by performing a median processing to the second pixel signals generated by the plurality of exposure The imaging apparatus according to claim 4, wherein the evaluation value is generated.

When the signal processing means generates the evaluation value using the second pixel signal, the signal processing means performs an averaging process by excluding pixel signals out of 1σ from the second pixel signal generated by a plurality of exposures. The imaging apparatus according to claim 4, wherein the evaluation value is generated using a pixel signal obtained by performing the operation.

The imaging optical system further includes an IS lens, and the signal processing unit performs the plurality of exposures by shifting the position of the IS lens when the evaluation value is generated using the second pixel signal. The imaging apparatus according to any one of claims 5 to 7, wherein

The imaging apparatus according to any one of claims 5 to 8, further comprising a focus adjusting means for driving the focus lens in accordance with the evaluation value generated by said signal processing means.

Each pixel of the two-dimensional pixel array has a photoelectric conversion unit and a microlens corresponding to each pixel, and the second pixel restricts the direction of light incident on the photoelectric conversion unit via the microlens. The imaging apparatus according to claim 1, further comprising:

The output means outputs the first pixel signal from the first output system, and when at least a part of the pixel signal read by the reading means is the second pixel signal, The image pickup apparatus according to claim 10, wherein the pixel signal is output from two output systems.

Each pixel of the two-dimensional pixel array includes a photoelectric conversion unit and a microlens corresponding to a plurality of pixels, the first pixel corresponds to the plurality of pixels, and the second pixel includes the plurality of pixels. 10. The imaging according to claim 1, wherein the readout unit reads out a pixel signal generated from each pixel of the two-dimensional pixel array. apparatus.

The output means adds pixel signals read from the plurality of pixels and outputs the result as the first pixel signal, and outputs a pixel signal of a predetermined pixel of the plurality of pixels as the second pixel signal. The imaging apparatus according to claim 12, wherein

Having an electronic zoom means for performing an electronic zoom of the captured image generated by the first pixel signals,
Based on the ratio of expansion before Symbol electronic zooming unit, the image pickup according to the captured image to claim 13, wherein the determining whether to generate from the first pixel signal and the second pixel signal apparatus.

Signal processing means for generating an evaluation value for performing focus adjustment of the captured image and the focus lens using the pixel signal output by the output means;
Each pixel of the two-dimensional pixel array includes a photoelectric conversion unit and a microlens corresponding to a plurality of pixels, the first pixel corresponds to the plurality of pixels, and the second pixel includes the plurality of pixels. Each of the pixels included in the pixel, and the readout means reads out a pixel signal generated from each pixel of the two-dimensional pixel array,
The output means adds pixel signals read from the plurality of pixels and outputs the result as the first pixel signal, and outputs a pixel signal of a predetermined pixel of the plurality of pixels as the second pixel signal. And
Electronic zoom means for performing electronic zoom on the captured image generated by the first pixel signal;
Determining whether to generate the captured image from the first pixel signal and the second pixel signal based on the magnification of the electronic zoom means;
When it is determined that the captured image is generated from the first pixel signal and the second pixel signal, the signal processing unit is configured to read the second pixel read from a plurality of pixels corresponding to the microlens. and adding the signals, the image pickup apparatus according to claim 1, characterized in that to generate the captured image from the and the summing has been the second pixel signal the first pixel signal.

A first pixel that generates a first pixel signal for photoelectrically converting a subject image formed by a photographing optical system having a focus lens to generate a photographed image, and different partial regions of the pupil region of the photographing optical system An image pickup unit having a two-dimensional pixel array including a second pixel that photoelectrically converts a subject image from the second pixel signal to generate a second pixel signal, and an output unit that outputs a pixel signal from the image pickup unit It met a control method of the device,
A readout step of reading out the first pixel signal generated by the first pixel and the second pixel signal generated by the second pixel at different readout rates;
The pixel signal to be switched between the first output system and the second output system is output according to whether the pixel signal read in the reading step is the first pixel signal or the second pixel signal. for example Bei and an output step,
The method for controlling an imaging apparatus , wherein the output means includes the first output system and the second output system.

A first pixel that generates a first pixel signal for photoelectrically converting a subject image formed by a photographing optical system having a focus lens to generate a photographed image, and different partial regions of the pupil region of the photographing optical system What program der for controlling an imaging apparatus including imaging means having a two-dimensional pixel array and a second pixel for generating the second pixel signal by photoelectrically converting an object image from,
Computer
Read means for reading the first pixel signal generated by the first pixel and the second pixel signal generated by the second pixel at different read rates,
A first output system and a second output system, the first output according to whether the pixel signal read by the reading means is the first pixel signal or the second pixel signal; A program that functions as output means for switching the system and the second output system to output the pixel signal.

Recorded computer-readable storage medium storing a program of claim 17.

A program causing a computer to function as each unit of the imaging apparatus according to any one of claims 1 to 15.

A storage medium storing a program that causes a computer to function as each unit of the imaging apparatus according to any one of claims 1 to 15.