Imaging optical system and imaging apparatus
AssigneeSony Corporation
InventorKazumasa Kaneda
Life of this patent
Estimating the term…
Abstract
An imaging optical system according to the present disclosure includes a first lens, a second lens, and a third lens. The first lens includes an image-plane-side lens surface having an aspherical shape with an inflection point. The second lens has a meniscus shape including a concave surface toward object side. The third lens has a meniscus shape including a concave surface toward image plane side. The first lens, the second lens, and the third lens are disposed in order from the object side toward the image plane side. The imaging optical system is provided as a bi-telecentric optical system.
Claims11
An imaging optical system comprising:
- a first lens that includes a lens surface having an aspherical shape with an inflection point toward an image plane side;
- a second lens that has a meniscus shape including a concave surface toward an object side;
- and
- a third lens that has a meniscus shape including a concave surface toward the image plane side,
- wherein respective meniscus shapes of the second lens and the third lens are oriented in directions opposite to each other,
- wherein a convex surface of the second lens faces a convex surface of the third lens,
- wherein the second lens has a positive refractive power,
- wherein the first lens, the second lens, and the third lens are disposed in order from the object side toward the image plane side,
- wherein an imaging device is disposed on the image plane side,
- wherein the imaging device includes a microlens and a light-receiving region, and
- wherein light is condensed in each pixel in both an on-axial region and an off-axial region without shifting pixels.
An imaging apparatus comprising:
- an imaging optical system;
- and
- an imaging device that outputs an imaging signal based on an optical image formed by the imaging optical system,
- the imaging optical system including:
- a first lens that includes a lens surface having an aspherical shape with an inflection point toward an image plane side,
- a second lens that has a meniscus shape including a concave surface toward an object side, and
- a third lens that has a meniscus shape including a concave surface toward the image plane side,
- wherein respective meniscus shapes of the second lens and the third lens are oriented in directions opposite to each other,
- wherein a convex surface of the second lens faces a convex surface of the third lens,
- wherein the second lens has a positive refractive power,
- wherein the first lens, the second lens, and the third lens are disposed in order from the object side toward the image plane side,
- wherein an imaging device is disposed on the image plane side,
- wherein the imaging device includes a microlens and a light-receiving region, and
- wherein light is condensed in each pixel in both an on-axial region and an off-axial region without shifting pixels.
Dependencies are inferred from the claim text.