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US 2011/0234835 A1Published application
Apparatus for auto-focusing detection, camera applying the same, and method for calculating distance to subject
AssigneeSamsung Electronics Co., Ltd.
InventorsWoo-Seok CHOI, Jeong-Won Lee
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Abstract
An apparatus for auto-focusing detection, a camera applying the same, and a method for calculating a distance to a subject are disclosed. The camera calculates a focusing control state based on synthetic image data output as an image passing through a pupil split unit provided with a filter arranged at one or more of the at least two holes as taken by an image pickup unit.
Claims17
A camera comprising:
- a pupil split unit, which includes at least two holes to split a beam of light passing through an image-taking lens into at least two beams of light;
- a filter arranged at one or more of the at least two holes, reducing a quantity of light passing through one or more of the holes;
- an image pickup unit taking an image with light passing through the pupil split unit;
- and
- a calculation unit calculating a focusing control state based on synthetic image data output as images passing through the at least two holes of the pupil split unit as taken by the image pickup unit.
2 more elements
An apparatus for automatically controlling a focus of a camera, the apparatus comprising:
- a pupil split unit, which includes at least two holes to split a beam of light passing through an image-taking lens into two beams of light;
- a filter arranged at one or more of the at least two holes, reducing a quantity of light passing through one or more of the holes;
- and
- a calculation unit calculating a focusing control state based on synthetic image data output as images passing through the at least two holes of the pupil split unit are taken.
1 more element
A method for calculating a distance to a subject, the method comprising:
- taking an image passing through a pupil split unit, which includes at least two holes splitting a beam of light passing through an image-taking lens into at least two beams of light and a filter reducing a quantity of light, the filter being arranged at one or more of the at least two holes;
- and
- calculating a distance from the subject to the image-taking lens based on synthetic image data output as images passing through the at least two holes of the pupil split unit are taken.
Dependencies are inferred from the claim text.