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[미국특허] Focus detection device 원문보기

IPC분류정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판)
  • G03B-003/10
  • G03B-013/34
출원번호 US-0497464 (1995-06-30)
우선권정보 JP-0211393 (1994-09-05)
발명자 / 주소
  • Uchiyama Shigeyuki (Tokyo JPX)
출원인 / 주소
  • Nikon Corporation (Tokyo JPX 03)
인용정보 피인용 횟수 : 92  인용 특허 : 13

초록 ▼

A focus detection device to improve the level of confidence of focus detection results of an object image by determining the defocus amount based on the filter processing data computed by a filter processing circuit for high frequencies of the subject image is disclosed. Computations may be repeated

대표청구항 ▼

A focus detection device having a phototaking lens, comprising: a plurality of focus detection areas within an image field of an object; a plurality of photo-electric conversion devices, each of said photo-electric devices corresponding to each of said focus detection areas; a focus detection optica

이 특허에 인용된 특허 (13) 인용/피인용 타임라인 분석

  1. Uchiyama Shigeyuki (Tokyo JPX) Kusaka Yosuke (Yokohama JPX) Yamano Syozo (Tokyo JPX), Autofocus camera.
    상세보기
  2. Kawakami Kiyotada (Osaka JPX) Takuma Masao (Osaka JPX) Asaeda Tooru (Nara JPX) Yamamoto Tooru (Osaka JPX) Murata Haruhiko (Osaka JPX), Automatic focusing apparatus for automatically matching focus in response to video signal based on extracted high freque.
    상세보기
  3. Miida Takashi (Kanagawa JPX) Iwabuchi Hiroshi (Kanagawa JPX) Kudoh Yoshimitsu (Kanagawa JPX) Mutoh Hideki (Kanagawa JPX), Automatic focusing system with phase difference detecting unit employing correlation operating circuit.
    상세보기
  4. Kawamura Kazuo (Asaka JPX) Miida Takashi (Kanagawa JPX) Iwabuchi Hiroshi (Kanagawa JPX) Hasegawa Jun (Kanagawa JPX), Correlation phase difference type focus detecting interpolation.
    상세보기
  5. Uchiyama Shigeyuki (Tokyo JPX), Focus condition detecting device.
    상세보기
  6. Kusaka Yosuke (Yokohama JPX) Utagawa Ken (Yokohama JPX) Uchiyama Shigeyuki (Tokyo JPX) Kuwata Chiyuki (Tokyo JPX) Yamano Shozo (Tokyo JPX), Focus detecting device.
    상세보기
  7. Kusada Yosuke (Yokohama JPX), Focus detecting device having light distribution detection.
    상세보기
  8. Kusaka Yosuke (Yokohama JPX), Focus detecting device having light distribution detection.
    상세보기
  9. Utagawa, Ken, Focus detection apparatus.
    상세보기
  10. Yamana Motokazu (Hachioji JPX) Nagasawa Nobuyuki (Hachioji JPX) Takahama Yasuteru (Hachioji JPX), Focusing position detecting and automatic focusing apparatus with optimal focusing position calculation method.
    상세보기
  11. Tajima Masami (Kawasaki JPX), Infrared imaging system having an automatic focusing control.
    상세보기
  12. Shindo Osamu (Tokyo JPX) Suzuki Noboru (Tokyo JPX) Toji Shigeo (Tokyo JPX), Optical filtering device and method for using the same.
    상세보기
  13. Shindo Osamu (Tokyo JPX) Suzuki Noboru (Tokyo JPX) Toji Shigeo (Tokyo JPX), Optical filtering device and method for using the same.
    상세보기

이 특허를 인용한 특허 (92) 인용/피인용 타임라인 분석

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