Shinichi Tsukada is a prominent inventor based in Toride, Japan. He has made significant contributions to the field of optical systems and focus detection technology. With a total of 13 patents to his name, Tsukada's work has had a profound impact on camera systems and photographic devices.

Latest Patents

Tsukada's latest patents include a focus detection device, focus detection method, and camera. The focus detection device comprises a focus detector, an object detector, a selector, a divider, and a controller. The focus detector is designed to identify multiple focus adjusting states at various positions in the image plane of an optical system. The object detector captures image information related to a specified object within the optical system's image. The selector chooses focus adjusting states based on the image information from the object detector. The divider assesses variations in the selected focus adjusting states and categorizes them into groups. Finally, the controller determines a final focus adjusting state based on a pre-final focus adjusting state from the selected group.

Another notable patent involves a focus detection device that includes a focus detection unit with light-receiving element arrays and lens systems. This device detects image shift amounts based on output signals from the light-receiving element arrays. It also features an acquisition unit that gathers data on the sizes and positions of multiple openings. The function value calculation unit computes a function value related to the gravitational center distance between overlapping areas of specific focus detection pupils. The conversion unit then translates the image shift amount into a defocus amount based on this function value.

Career Highlights

Shinichi Tsukada is currently employed at Nikon Corporation, a leading company in the imaging and optical products industry. His work at Nikon has allowed him to develop cutting-edge technologies that enhance the performance of cameras and imaging systems.

Collaborations

Throughout his career, Tsukada has collaborated with notable colleagues, including Toshiro Umeda and Hiroyuki Sugimura. These collaborations have contributed to the advancement of focus detection technologies and have fostered innovation within the field.

Conclusion

Shinichi Tsukada's contributions to focus detection technology and optical systems have established him as a key figure in the field of imaging. His innovative patents and work at Nikon Corporation continue to influence the development of advanced photographic

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