Imaging device and imaging apparatus
AssigneeSony Semiconductor Solutions Corporation
InventorTomohiko Baba
Life of this patent
Estimating the term…
Abstract
In a lens based on one-group configuration, performance is improved, and a wide angle and a low height are achieved. An imaging lens includes first to third lenses. These first to third lenses are sequentially arranged from an object side to an image surface side without sandwiching air. Each surface of the first to third lenses has an aspherical shape. An imaging element is arranged on the image surface side of the imaging lens. A cover glass is attached on an imaging surface of the imaging element without an air gap. Another lens may be arranged between the imaging lens and the imaging element.
Claims8
An imaging device, comprising:
- an imaging lens that includes a first lens, a second lens, and a third lens sequentially arranged from an object side to an image side without sandwiching air between the first lens, the second lens, and the third lens, wherein
- the first lens and the third lens both have a biconcave shape,
- an optical path of light at a periphery of the imaging lens is longer than an optical path of the light at a center of the imaging lens based on the biconcave shape of each of the first lens and the third lens, and
- each of a bonded surface of the first lens and the second lens and a bonded surface of the second lens and the third lens has an aspherical surface;
- an imaging element on the image side of the imaging lens;
- and
- a cover glass attached on an imaging surface of the imaging element without an air gap between the imaging element and the cover glass.
An imaging device, comprising:
- an imaging lens that includes a first lens, a second lens, and a third lens sequentially arranged from an object side to an image side without sandwiching air between the first lens, the second lens, and the third lens, wherein
- each of a bonded surface of the first lens and the second lens and a bonded surface of the second lens and the third lens has an aspherical surface, and
- the imaging lens satisfies Conditional Expression (a) below,
- Conditional Expression (a):
- −10≤R1/f≤−0.1,
- wherein
- f:
- focal length of the imaging lens,
- R1:
- curvature radius of a first surface, and
- the first surface is a surface of the first lens on the object side;
- an imaging element on the image side of the imaging lens;
- and
- a cover glass attached on an imaging surface of the imaging element without an air gap between the imaging element and the cover glass.
Dependencies are inferred from the claim text.