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US 9,438,778 B2Granted
Image pickup device and light field image pickup lens
AssigneeIndustrial Technology Research Institute
InventorsChuan-Chung Chang, Kuang-Vu Chen, Yen-Chang Wang, Hsin-Yueh Sung
Life of this patent
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Abstract
An image pickup device including an imaging lens, an image sensor, and a multiple aperture optical element is provided. The multiple aperture optical element is disposed on a light path between the imaging lens and the image sensor, and includes aperture elements arranged in an array. A ratio of an image side f-number of the imaging lens to an object side f-number of the imaging lens is within a range of 0.25 to 2. A light field image pickup lens is also provided.
Claims14
An image pickup device, comprising:
- an imaging lens;
- an image sensor;
- and
- a multiple aperture optical element, disposed on a light path between the imaging lens and the image sensor, and comprising a plurality of aperture elements arranged in an array, wherein a ratio of an image side f-number of the imaging lens to an object side f-number of the imaging lens is within a range of 0.25 to 2, and the image pickup device satisfies:
- 0.7
-
- L
- <
- D
- ×
- b
- P
- -
- a
- <
- 1.06
-
- L
- ,
- wherein L is a pitch of the aperture elements, D is a diameter of an exit pupil of the imaging lens, P is a distance between the exit pupil of the imaging lens and an image plane of the imaging lens, a is a distance value from the image plane of the imaging lens to a front principal plane of the multiple aperture optical element, and b is a distance between a back principal plane of the multiple aperture optical element and an imaging plane on the image sensor, wherein when the image plane of the imaging lens is located at one side of the front principal plane away from the image sensor, the value of a is negative, and when the image plane of the imaging lens is located at one side of the front principal plane close to the image sensor, the value of a is positive.
17 more elements
A light field image pickup lens, comprising:
- an imaging lens, disposed between an object side and an imaging plane of the light field image pickup lens;
- and
- a multiple aperture optical element, disposed between the imaging lens and the imaging plane of the light field image pickup lens, and comprising a plurality of aperture elements arranged in an array, wherein a ratio of an image side f-number of the imaging lens to an object side f-number of the imaging lens is within a range of 0.25 to 2, and the light field image pickup lens satisfies:
- 0.07
-
- L
- <
- D
- ×
- b
- P
- -
- a
- <
- 1.06
-
- L
- ,
- wherein L is a pitch of the aperture elements, D is a diameter of an exit pupil of the imaging lens, P is a distance between the exit pupil of the imaging lens and an image plane of the imaging lens, a is a distance value from the image plane of the imaging lens to a front principal plane of the multiple aperture optical element, and b is a distance between a back principal plane of the multiple aperture optical element and an imaging plane of the light field image pickup lens, wherein when the image plane of the imaging lens is located at one side of the front principal plane away from the image plane of the light field image pickup lens, the value of a is negative, and when the image plane of the imaging lens is located at one side of the front principal plane close to the image plane of the light field image pickup lens, the value of a is positive.
16 more elements
Dependencies are inferred from the claim text.