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-0307911 (1994-09-16) |
발명자 / 주소 |
|
인용정보 | 피인용 횟수 : 282 인용 특허 : 0 |
The optical scanning head includes at least one trio of light emitting diodes arranged so the LEDs emit light at different angles to create a fan of light. An optical module includes a light shield or “dark room”and a lens/filter assembly which provides control of the depth of focus of the scanner.
The optical scanning head includes at least one trio of light emitting diodes arranged so the LEDs emit light at different angles to create a fan of light. An optical module includes a light shield or “dark room”and a lens/filter assembly which provides control of the depth of focus of the scanner. The optical module is located behind the light source, and the detector, made up of a CCD array is mounted behind the optic module for detecting the light intensity in the reflected beam over a field of view across a bar code symbol. The CCD array generates an electrical signal indicative of the detected light intensity. A DC source or battery provides DC voltage to the LEDs and CCDs in response to a clocked signal which provides a gradual or sequential illumination of the LEDs and coordinates the activation of the CCDs in order to minimize power consumption during scans.
An optical scanner for reading and decoding information encoded in a bar code comprising alternating lines of light and dark, said optical scanner comprising: a printed circuit board having a front, a center and a rear; an array of light emitting diodes comprising at least one combination of light e
An optical scanner for reading and decoding information encoded in a bar code comprising alternating lines of light and dark, said optical scanner comprising: a printed circuit board having a front, a center and a rear; an array of light emitting diodes comprising at least one combination of light emitting diodes disposed at said front of said printed circuit board in an arrangement wherein each light emitting diode of said at least one combination emits light at a non-zero angle with respect to a centerline bisecting said printed circuit board from said front to said rear so that a fan of light is projected from said array toward a reference plane within a field of view containing said bar code so that light is reflected therefrom; an optical assembly disposed at a center of said printed circuit board for receiving, concentrating and directing reflected light toward said rear of said board; a CCD array disposed at said rear of said printed circuit board for detecting a portion of said reflected light directed thereon by said optical assembly and generating an electrical signal in response thereto wherein said electrical signal is an analog representation of said bar code; a conversion assembly for receiving and converting said electrical signal into a digital signal corresponding to said bar code; and a voltage source for providing a driving voltage to said array of light emitting diodes, said CCD array and said conversion assembly.
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