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US 12,607,829 B2Granted
Optical system
AssigneeLG Innotek Co., Ltd.
InventorsYoung Man Kwon, Sung Min Moon, Jin Kwan Jeong
Life of this patent
Estimating the term…
Abstract
An optical system disclosed in an embodiment of the invention includes an optical path changing member and a plurality of lenses sequentially disposed along an optical axis from an object side to an image side, the light path changing member includes a reflective mirror or a prism, a distance between the plurality of lenses does not change, and a lens closest to an image side of the plurality of lenses has a larger effective aperture than the other lenses.
Claims18
An optical system comprising:
- an optical path changing member and a plurality of lenses sequentially disposed along an optical axis from an object side toward an image side,
- wherein the plurality of lenses includes first to fifth lenses sequentially disposed along the optical axis in a direction from the object side toward the image side,
- wherein the optical path changing member includes a reflective mirror or a prism,
- wherein a distance between the plurality of lenses does not change,
- wherein the fifth lens closest to an image sensor of the plurality of lenses has a larger effective aperture than the other lenses,
- wherein an object-side surface of the first lens closest to the optical path changing member has a convex shape on the optical axis,
- wherein an image-side surface of the fifth lens has a concave shape on the optical axis,
- wherein the fifth lens has a positive refractive power,
- wherein the optical system consists of five lenses,
- wherein a center thickness of the first lens is CT1,
- wherein a center thickness of the fifth lens is CT5, and
- wherein the following Condition is satisfied:
- 2<CT1/CT5<4. [Condition]
10 more elements
Dependencies are inferred from the claim text.