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Fingerprint input apparatus 원문보기

IPC분류정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판)
  • G06K-009/20
출원번호 US-0663126 (1991-03-04)
우선권정보 JP-0055666 (1990-03-07); JP-0208694 (1990-08-06); JP-0241725 (1990-09-11); JP-0321713 (1990-11-26); JP-0003942 (1991-01-17)
발명자 / 주소
  • Fujimoto Yoshiji (Nara JPX) Katagiri Masayuki (Nara JPX) Fukuda Naoyuki (Kita-Katsuragi JPX) Sakamoto Kenji (Nara JPX)
출원인 / 주소
  • Sharp Kabushiki Kaisha (JPX 03)
인용정보 피인용 횟수 : 129  인용 특허 : 0

초록 ▼

A fingerprint input apparatus is constructed to have simple construction. It serves to provide an excellen S/N ratio and reliably input a fingerprint pattern. The fingerprint input apparatus includes a light source for emitting a ray of light, a lightguide plate having a predetermined location at wh

대표청구항 ▼

A fingerprint input apparatus comprising: a lightguide plate having a through hole on which a finger is placed; light sources for emitting rays of light; means for directing said rays of light into surfaces of said lightguide plate in a manner to keep such an angle of incidence as allowing said rays

이 특허를 인용한 특허 (129)

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