Title:
画像キャプチャデバイスに光学的に結合されたレンズシステム
Document Type and Number:
Japanese Patent JP4312596
Kind Code:
B2
Abstract:
Simple, inexpensive and durable multi-element lens systems are provided. These lens systems may be optically coupled to digital image-capturing devices, such as those used in digital cameras. Some lens systems of the present invention include a glass microsphere bonded to a planar surface of a glass hemisphere. In preferred lens systems, the thickness of the glass hemisphere is selected to form an image plane for transmitted light that is tangent to the surface of the microsphere. Accordingly, in digital cameras fabricated with such lens systems, the glass microsphere can be attached directly to a digital image-capturing device. These preferred lens systems require no focusing adjustment and are suitable for applications requiring a wide field of view. In some embodiments, the glass microsphere is bonded to the glass hemisphere using a light-absorbing material in order to create an apodized pupil. Some such embodiments are fabricated with a light-absorbing material with an absorption coefficient that varies according to the wavelength of transmitted light.
Inventors:
Hayag Michel
Application Number:
JP2003514322A
Publication Date:
August 12, 2009
Filing Date:
July 22, 2002
Export Citation:
Assignee:
Michel Sayag
International Classes:
G02B5/00; G02B13/00; G02B7/02; G02B9/06; G02B13/24; H04N5/225
Domestic Patent References:
| JP200098223A | ||||
| JP611665A | ||||
| JP200123233A | ||||
| JP60161684A | ||||
| JP534489A | ||||
| JP2000235038A | ||||
| JP200019390A |
Attorney, Agent or Firm:
Meisei International Patent Office
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