Optical unit and imaging apparatus
AssigneesSony Corporation, Anteryon B.V.
InventorsTomohiko Baba, Louis Sander
Life of this patent
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Abstract
An optical unit includes: a first lens group; and a second lens group, which are arranged in order from an object side toward an image surface side, wherein the first lens group includes a first lens element, a first transparent body, and a second lens element, which are arranged in order from the object side toward the image surface side, and the second lens group includes a third lens element, a second transparent body and a fourth lens element, which are arranged in order from the object side toward the image surface side.
Claims23
An optical unit, comprising:
- a first lens group including a first lens element, a first transparent body, and a second lens element, which are arranged in order from an object side toward an image surface side;
- and
- a second lens group including a third lens element, a second transparent body and a fourth lens element, which are arranged in order from the object side toward the image surface side,
- wherein,
- a refractive index ng1 of the first transparent body of the first lens group is different than a refractive index ng2 of the second transparent body of the second lens group,
- a condition of 1.65≦ng1 is satisfied, and
- a condition of 12≦vg1≦45 is satisfied in which vg1 represents an Abbe number of the first transparent body of the first lens group.
An optical unit, comprising:
- a first lens group;
- and
- a second lens group, which are arranged in order from an object side toward an image surface side,
- wherein,
- the first lens group includes a first lens element, a first buffer layer, a first transparent body, and a second lens element, which are arranged in order from the object side toward the image surface side,
- the second lens group includes a third lens element, a second transparent body, a second buffer layer, and a fourth lens element, which are arranged in order from the object side toward the image surface side, and
- a refractive index ng1 and an Abbe number vg1 of the first transparent body of the first lens group satisfy the following conditions:
- 1.65≦ng1, and
- 12≦vg1≦45.
An imaging apparatus, comprising:
- an imaging device;
- and
- an optical unit to form a subject image on the imaging device, the optical unit including a first lens group, and a second lens group, which are arranged in order from an object side toward an image surface side,
- wherein,
- the first lens group includes a first lens element, a first transparent body, and a second lens element, which are arranged in order from the object side toward the image surface side,
- the second lens group includes a third lens element, a second transparent body and a fourth lens element, which are arranged in order from the object side toward the image surface side,
- a refractive index ng1 of the first transparent body of the first lens group is different than a refractive index ng2 of the second transparent body of the second lens group,
- a condition of 1.65≦ng1 is satisfied, and
- a condition of 12≦vg1≦45 is satisfied in which vg1 represents an Abbe number of the first transparent body of the first lens group.
Dependencies are inferred from the claim text.