Aberration correction apparatus, imaging apparatus and aberration correction method

Patent metadata

Field	Value
Publication number	US-9406109-B2
Application number	US-201414491355-A
Country	US
Kind code	B2
Filing date	Sep 19, 2014
Priority date	Sep 26, 2013
Publication date	Aug 2, 2016
Grant date	Aug 2, 2016

Abstract

An aberration correction apparatus includes an aberration information acquisition unit which acquires aberration information from an imaging lens; a spectroscopic characteristic information acquisition unit which acquires spectroscopic characteristic information of an imaging device which performs a photoelectric conversion of an optical image that is formed in the imaging lens; and an aberration information correction unit which performs a correction according to the spectroscopic characteristic information with respect to the acquired aberration information.

First claim

What is claimed is:

1. An aberration correction apparatus comprising:
an aberration information acquisition unit that acquires aberration information from an imaging lens;
a spectroscopic characteristic information acquisition unit that acquires spectroscopic characteristic information of an imaging device that performs a photoelectric conversion of an optical image that is formed in the imaging lens;
an aberration information correction unit that performs a correction according to the spectroscopic characteristic information with respect to the acquired aberration information; and
an optical conversion information acquisition unit that acquires optical conversion information on an optical conversion that is performed with respect to the optical image,
wherein the aberration information correction unit performs correction according to the spectroscopic characteristic information and the optical conversion information with respect to the acquired aberration information.

2. The aberration correction apparatus according to claim 1 ,
wherein the spectroscopic characteristic information is information that is set based on a reference spectroscopic characteristic when the aberration information acquired from the imaging lens is generated, and based on a spectroscopic characteristic of the imaging device.

3. The aberration correction apparatus according to claim 2 ,
wherein the spectroscopic characteristic information is information that is generated for each color component different from one color component that is used as a reference, among three primary color components.

4. The aberration correction apparatus according to claim 1 ,
wherein the spectroscopic characteristic information acquisition unit accepts setting of the spectroscopic characteristic information or modification of the acquired spectroscopic characteristic information in a case where it is difficult to acquire the spectroscopic characteristic information.

5. The aberration correction apparatus according to claim 1 ,
wherein the optical conversion information acquisition unit accepts setting of the optical conversion information, or modification of the acquired optical conversion information in a case where it is difficult to acquire the optical conversion information.

6. The aberration correction apparatus according to claim 1 ,
wherein the optical conversion information is information that represents an expansion magnification or a contraction magnification of the optical image.

7. The aberration correction apparatus according to claim 6 ,
wherein the expansion magnification or the contraction magnification is set by using an imaging plane size of an imaging device that is defined in aberration information acquired from the imaging lens, and by using an imaging plane size of an imaging device that performs a photoelectric conversion of an optical image that is formed in the imaging lens, as a reference.

8. The aberration correction apparatus according to claim 1 , further comprising:
a first mount unit for connecting the imaging lens; and
a second mount unit for connecting an imaging apparatus which uses the imaging device.

9. An imaging apparatus comprising:
an aberration information acquisition unit which acquires aberration information from an imaging lens;
an imaging device that performs a photoelectric conversion of an optical image that is formed in the imaging lens;
a spectroscopic characteristic information acquisition unit that acquires spectroscopic characteristic information of the imaging device;
an aberration information correction unit that performs a correction according to a spectroscopic characteristic of the imaging device with respect to the acquired aberration information; and
an aberration correction processing unit that performs an aberration correction using the aberration information corrected by the aberration information correction unit; and
an optical conversion information acquisition unit that acquires optical conversion information on an optical conversion that is performed with respect to an optical image that is formed in the imaging lens,
wherein the aberration information correction unit performs a correction according to the spectroscopic characteristic and the optical conversion information with respect to the acquired aberration information.

10. The imaging apparatus according to claim 9 , further comprising:
a mount unit for connecting the imaging lens or an adapter apparatus,
wherein the optical conversion information acquisition unit acquires the optical conversion information from the adapter apparatus.

11. The imaging apparatus according to claim 9 , further comprising:
a mount unit for connecting the imaging lens or an adapter apparatus,
wherein in a case where the adapter apparatus is connected to the mount unit, the optical conversion information acquisition unit acquires optical conversion information on an optical conversion that is performed in the adapter apparatus from the adapter apparatus, the aberration information acquisition unit acquires the aberration information via the adapter apparatus, and the aberration information correction unit switches a correction operation of the aberration information according to processing of the adapter apparatus.

12. An aberration correction method comprising:
acquiring aberration information from an imaging lens in an aberration information acquisition unit;
acquiring spectroscopic characteristic information of an imaging device that performs a photoelectric conversion of an optical image that is formed in the imaging lens in a spectroscopic characteristic information acquisition unit;
performing a correction according to the spectroscopic characteristic information with respect to the acquired aberration information in an aberration information correction unit; and
acquiring optical conversion information on an optical conversion that is performed with respect to the optical image in an optical conversion information acquisition unit,
wherein the aberration information correction unit performs correction according to the spectroscopic characteristic information and the optical conversion information with respect to the acquired aberration information.

Assignees

• Sony Corp

Inventors

• Tanae Takuma
• Kouno Rui

Classifications

• H04N23/88

  for colour balance, e.g. white-balance circuits or colour temperature control · CPC title

• H04N23/69

  Control of means for changing angle of the field of view, e.g. optical zoom objectives or electronic zooming · CPC title

• H04N25/616

  involving a correlated sampling function, e.g. correlated double sampling [CDS] or triple sampling · CPC title

• H04N23/83

  specially adapted for colour signals · CPC title

• H04N5/3572

  Electricity · mapped topic