Image-taking lens apparatus
AssigneeKonica Minolta Photo Imaging, Inc.
InventorsGenta Yagyu, Shinji Yamaguchi, Kenji Konno, Kaori Kojima
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Abstract
An image-taking lens apparatus has an image sensor for converting an optical image of a subject into an electrical signal and an image-taking lens system for forming the optical image on the image sensor. The image-taking lens system includes a prism for bending the optical path, and the refractive index of the prism fulfills a prescribed conditional formula.
Claims18
An image-taking lens apparatus comprising:
- an image sensor for converting an optical image of a subject into an electrical signal;
- and
- an image-taking lens system for forming the optical image on the image sensor, the image-taking lens system including a prism configured to bend an optical path approximately 90 degrees,
- wherein the prism fulfills the following conditional formula:
- Ndp>1.9
- where
- Ndp represents a refractive index for a d-line of the prism.
A zoom lens system that includes a plurality of lens units and that achieves zooming by varying distances between the lens units, the zoom lens system comprising:
- a prism for bending an optical path,
- wherein the prism fulfills the following conditional formula:
- Ndp>1.9
- where
- Ndp represents a refractive index for a d-line of the prism.
A digital camera comprising:
- an image sensor for converting an optical image of a subject into an electrical signal;
- and
- an image-taking lens system for forming the optical image on the image sensor, the image-taking lens system including a prism configured to bend an optical path approximately 90 degrees,
- wherein the prism fulfills the following conditional formula:
- Ndp>1.9
- where
- Ndp represents a refractive index for a d-line of the prism.
Dependencies are inferred from the claim text.