IMAGING DEVICE AND MOBILE INFORMATION TERMINAL
First Claim
Patent Images
1. An imaging device comprising:
- an image-forming optical system composed of two or more lenses; and
a solid state image sensor for capturing an image formed on an image forming plane of the image-forming optical system;
wherein, a distance between a forwardmost plane and the image forming plane of the image-forming optical system is less than 3.6 mm, and a maximum incidence angle of a principal ray incident on the image forming plane exceeds 33°
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Abstract
An imaging device with a short length and small aberration is provided. A total length D of an image-forming optical system is less than 3.6 mm. A maximum incidence angle of a principle ray on an image forming plane exceeds 33°. Conditions f/fL<−1.50 or f/fL<−0.9, and D/f<1.10 are satisfied where f denotes a focal length of the entire image-forming optical system and fL denotes a focal length of a last lens.
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Citations
15 Claims
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1. An imaging device comprising:
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an image-forming optical system composed of two or more lenses; and a solid state image sensor for capturing an image formed on an image forming plane of the image-forming optical system; wherein, a distance between a forwardmost plane and the image forming plane of the image-forming optical system is less than 3.6 mm, and a maximum incidence angle of a principal ray incident on the image forming plane exceeds 33°
. - View Dependent Claims (2, 9, 10, 11, 12, 13, 14, 15)
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3. An imaging device comprising:
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an image-forming optical system composed of two or more lenses; and a solid state image sensor for capturing an image formed on an image forming plane of the image-forming optical system; wherein, a distance D between a forwardmost plane and the image forming plane of the image-forming optical system is less than 3.6 mm, and D/f<
1.10 is satisfied where f denotes a focal length of the entire image-forming optical system. - View Dependent Claims (4, 5, 6, 7)
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8. An imaging device comprising:
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an image-forming optical system composed of two or more lenses; and a solid state image sensor for capturing an image formed on an image forming plane of the image-forming optical system; wherein, f/fL <
−
1.5 and D/f<
1.10 are satisfied where D denotes a distance between a forwardmost plane and the image forming plane of the image-forming optical system, and f denotes a focal length of the entire image-forming optical system, and fL denotes a focal length of a last lens.
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Specification