최소 단어 이상 선택하여야 합니다.
최대 10 단어까지만 선택 가능합니다.
다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
NTIS 바로가기다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
DataON 바로가기다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
Edison 바로가기다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
Kafe 바로가기국가/구분 | United States(US) Patent 등록 |
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국제특허분류(IPC7판) |
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출원번호 | US-0494435 (1995-06-26) |
발명자 / 주소 |
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출원인 / 주소 |
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대리인 / 주소 |
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인용정보 | 피인용 횟수 : 261 인용 특허 : 68 |
A portable dataform reader includes a large F# optic assembly that provides a working range from about 2.5" to at least 8.5" in front of the reader while maintaining a broad field of view. The reader is capable of capturing a high signal to noise ratio image in under 0.01 seconds thereby making the
A portable dataform reader includes a large F# optic assembly that provides a working range from about 2.5" to at least 8.5" in front of the reader while maintaining a broad field of view. The reader is capable of capturing a high signal to noise ratio image in under 0.01 seconds thereby making the reader highly tolerant to hand jitter. To accommodate the large F# optic and short exposure period, the reader is provided with an efficient high intensity uniform illumination module.
[ What is claimed:] [1.] An extended working range dataform reader for reading a dataform positioned in a target area, said reader comprising:(a) an image sensor, including an array of photosensor elements generating a signal representative of a dataform in the target area,(b) an optic system includ
[ What is claimed:] [1.] An extended working range dataform reader for reading a dataform positioned in a target area, said reader comprising:(a) an image sensor, including an array of photosensor elements generating a signal representative of a dataform in the target area,(b) an optic system including two substantially identical lens elements positioned with mirrored symmetry about an aperture for canceling optic distortion,(c) support structure securing said image sensor at a fixed position relative to said optic system; and(d) an illumination system comprising a plurality of sources of light which provides illumination with an intensity variation of less than 20% across said target area, said illumination system including an optic system for directing the illumination to a field substantially the same size as the field of view of said optic system, said optic system including a plurality of lens elements each having a focal point, said illumination sources being positioned between said lens element and said focal point.
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