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Focus detecting apparatus provided with a plurality of detecting fields

IPC분류정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판)
  • G01J-001/20
  • G03B-003/00
출원번호 US-0281781 (1988-12-09)
우선권정보 JP-0315490 (1987-12-14)
발명자 / 주소
  • Suzuki Kenji (Yokohama JPX) Ohtaka Keiji (Yokohama JPX) Suda Yasuo (Yokohama JPX)
출원인 / 주소
  • Canon Kabushiki Kaisha (Tokyo JPX 03)
인용정보 피인용 횟수 : 17  인용 특허 : 18

초록

An apparatus for detecting the focus-adjusted state of an objective lens comprises a plurality of juxtaposed units each having a lens assembly for receiving light fluxes passed through different areas of the pupil of the objective lens and forming light intensity distributions whose relative positio

대표청구항

An apparatus for detecting a focus-adjusted state of an objective lens, comprising a plurality of juxtaposed units, each unit having: a lens assembly for receiving light fluxes passed through different areas of a pupil of the objective lens and forming light intensity distributions whose relative po

이 특허에 인용된 특허 (18)

  1. Koyama Takeshi (Tokyo JPX) Ohtaka Keiji (Tokyo JPX), Apparatus for detecting the focus adjusted state of an objective optical system.
  2. Shippey Geoffrey (Edinbungh GB6), Automatic focussing device.
  3. Suda Yasuo (Yokohama JPX) Arakawa Kazuhiko (Kawasaki JPX) Ohtaka Keiji (Tokyo JPX) Koyama Takeshi (Tokyo JPX) Ohnuki Ichiro (Tokyo JPX), Camera having a focus detecting apparatus.
  4. Ishizaki Akira (Yokohama JPX) Akashi Akira (Yokohama JPX) Ohtaka Keiji (Tokyo JPX) Suda Yasuo (Yokohama JPX) Hiramatsu Akira (Yokohama JPX), Exposure control apparatus.
  5. Akashi Akira (Yokohama JPX) Ishizaki Akira (Yokohama JPX) Hiramatsu Akira (Yokohama JPX) Suda Yasuo (Yokohama JPX) Ohtaka Keiji (Tokyo JPX), Focus detecting apparatus.
  6. Suzuki Kenji (Kawasaki JPX), Focus detecting apparatus.
  7. Fukuhara Toru (Isehara JPX) Utagawa Ken (Yokohama JPX), Focus detecting device.
  8. Hamada Masataka (Minamikawachi JPX) Karasaki Toshihiko (Sakai JPX) Matsui Toru (Sakai JPX) Maekawa Yukio (Sakai JPX), Focus detecting device.
  9. Koyama Takeshi (Tokyo JPX) Ohtaka Keiji (Tokyo JPX), Focus detecting device.
  10. Utagawa Ken (Tokyo), Focus detecting device.
  11. Ohnuki Ichiro (Tokyo JPX) Suda Yasuo (Yokohama JPX) Ishizaki Akira (Yokohama JPX) Akashi Akira (Yokohama JPX) Ohtaka Keiji (Tokyo JPX) Koyama Takeshi (Tokyo JPX), Focus detecting device having two selectively movable lenses.
  12. Ohtaka Keiji (Tokyo JPX) Akashi Akira (Yokohama JPX) Ishizaki Akira (Yokohama JPX) Suda Yasuo (Yokohama JPX) Hiramatsu Akira (Yokohama JPX), Focus detecting device with shading reduction optical filter.
  13. Matsumura Susumu (Yokohama JPX) Suzuki Takashi (Yokohama JPX) Suzuki Kenji (Kawasaki JPX), Focus detecting system detecting position of images formed from the center and periphery of the optical axis.
  14. Suzuki, Kenji, Focus detecting system using light from an imaging optical system for focus detection.
  15. Suzuki Kenji (Kawasaki JPX), Focus detection apparatus.
  16. Suzuki Kenji (Kawasaki JPX), Focus detection apparatus for a camera.
  17. Araki Kunihiko (Tokyo JPX), Focusing position detection apparatus.
  18. Akashi Akira (Yokohama JPX) Suzuki Kenji (Kawasaki JPX), Solid-state imaging device.

이 특허를 인용한 특허 (17)

  1. Suzuki Kenji (Kawasaki JPX), Accumulation time control apparatus.
  2. Suda Yasuo,JPX ; Nagano Akihiko,JPX ; Konishi Kazuki,JPX, Camera in which focus is detected from among a plurality of viewfields in conjunction with detection of the visual axis.
  3. Suzuki Kenji,JPX ; Ishizaki Akira,JPX ; Ohtaka Keiji,JPX ; Suda Yasuo,JPX ; Fukahori Hidehiko,JPX ; Nagano Akihiko,JPX ; Konishi Kazuki,JPX ; Tsunekawa Tokuichi,JPX, Camera with visual axis detecting device.
  4. Suzuki Kenji (Kawasaki JPX), Camera with visual axis detection equipment.
  5. Ozawa Masamitsu,JPX, Focal point detection apparatus.
  6. Suda Yasuo,JPX ; Ohtaka Keiji,JPX ; Nagata Keiji,JPX ; Yamashita Kenichiro,JPX ; Kadohara Terutake,JPX ; Onoda Hitoshi,JPX, Focus detecting apparatus.
  7. Ohtaka Keiji,JPX, Focus detecting apparatus and optical apparatus using it.
  8. Akashi Akira,JPX ; Miyawaki Mamoru,JPX ; Suzuki Kenji,JPX ; Nakayama Toshiki,JPX, Focus detecting apparatus having photoelectric area sensors.
  9. Suda, Yasuo, Focus detecting device with photoelectric conversion portion having microlens and with light blocking portion having first and second openings.
  10. Sensui, Takayuki, Focus detection apparatus having multiple detecting zones.
  11. Ohsawa Keiji (Yokohama JPX), Focus detection device for a camera.
  12. Ohtaka Keiji,JPX ; Ohmura Yusuke,JPX, Focus detection device for objective lens.
  13. Suda,Yasuo, Focus detection system for focus adjustment having differently-sized apertures and using a pair of signals formed by a pencil of rays passing through different regions of exit pupil of imaging lens.
  14. Suda Yasuo,JPX, Optical apparatus and camera capable of line of sight detection.
  15. Onoda,Hitoshi; Ohtaka,Keiji; Kadohara,Terutake, Optical device and method for selecting object of focus.
  16. Sensui Takayuki,JPX, Optical system for focus detecting device.
  17. Engelhardt, Johann; Hell, Stefan W.; Keller-Findeisen, Jan, Three-dimensionally localizing light emitting molecules of unknown orientation and unknown Z-position.
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