JP2013258647A5

JP2013258647A5 -

Info

Publication number: JP2013258647A5
Application number: JP2012135027A
Authority: JP
Filing date: 2012-06-14
Publication date: 2015-04-09
Anticipated expiration: 2032-06-14

Claims

A lens device that is detachably attached to the imaging device body,
An imaging optical system for forming an optical image of an object;
A first bandpass filter through which the light beam from the first region of the exit pupil of the imaging optical system passes; a second bandpass filter through which the light beam from the second region of the exit pupil of the imaging optical system passes;
Have
The imaging apparatus main body includes an imaging element having a plurality of pixels, and first and second photoelectric conversion units are disposed in each pixel, and the first photoelectric conversion unit includes the first bandpass filter. Photoelectric conversion of the light beam from the first region received through the second region, the second photoelectric conversion unit photoelectrically converts the light beam from the second region received through the second band pass filter, The first band pass filter and the first photoelectric conversion unit are arranged in a conjugate relationship, and the second band pass filter and the second photoelectric conversion unit are arranged in a conjugate relationship,
The lens device, wherein the first and second band pass filters have different spectral transmittance characteristics.

The imaging optical system has a diaphragm for adjusting the amount of light,
The lens apparatus according to claim 1, wherein the first and second band-pass filters are provided in the vicinity of the diaphragm.

The lens apparatus according to claim 1, further comprising storage means for storing information on spectral transmittances of the first and second band pass filters.

A lens barrel that houses the imaging optical system and the first and second bandpass filters;
The first and second band pass filters are configured as one band pass filter unit,
The lens apparatus according to claim 1, wherein the band-pass filter unit is detachable from the lens barrel.

An imaging optical system for forming an optical image of an object;
A first bandpass filter through which the light beam from the first region of the exit pupil of the imaging optical system passes; a second bandpass filter through which the light beam from the second region of the exit pupil of the imaging optical system passes;
The image sensor has a plurality of pixels, and each pixel is provided with first and second photoelectric conversion units, and the first photoelectric conversion unit receives the light through the first bandpass filter. The light beam from the first region of the exit pupil of the imaging optical system is photoelectrically converted, and the second photoelectric conversion unit receives the first exit of the exit pupil of the imaging optical system received through the second bandpass filter. The light flux from two regions is photoelectrically converted, the first band pass filter and the first photoelectric conversion unit are arranged in a conjugate relationship, and the second band pass filter and the second photoelectric conversion unit are conjugate. Arranged in a relationship
The imaging apparatus according to claim 1, wherein the first and second band pass filters have different spectral transmittance characteristics.

The imaging apparatus according to claim 5, further comprising a microlens provided for each pixel.

The imaging apparatus according to claim 5, further comprising an image synthesis unit that synthesizes the first and second images obtained from the first and second photoelectric conversion units.

8. The method according to claim 5, further comprising a focus detection unit that performs phase difference type focus detection based on signals obtained by the first and second photoelectric conversion units. 9. The imaging device described.

The spectral transmittance characteristics of band pass filters corresponding to two photoelectric conversion units among the three or more photoelectric conversion units are equal, each having three or more photoelectric conversion units for each pixel. The imaging device according to any one of 5 to 8.

Means for changing a signal acquired by the first photoelectric conversion unit so as to correct a reduction in off-axis light amount based on image height characteristics relating to light amount information of a light beam incident on the first photoelectric conversion unit; The imaging device according to any one of claims 5 to 9, wherein

11. The method according to claim 5, further comprising means for acquiring spectral transmittance information of the first and second band pass filters, and performing image synthesis using the spectral transmittance. The imaging device according to item.