KR930014155A - Optical scanning device - Google Patents

Abstract

The present invention eliminates the number of devices for biasing a symbol and makes it easy to bias the beam from the leisure diode against any symbol during the scan or during the scan, thereby accurately positioning the symbol relative to the leisure syringe prior to the injection. The present invention relates to an optical chuck scanning apparatus for accurately tracking a symbol with a leisure beam during scanning, and is configured as follows. In order to face the crossroads with a portable scanning head, a leisure is generated in the head, and the incident light beam is directed to the reference plane side located outside the head and in a plane perpendicular to the propagation direction of the incident laser beam. Optical elements such as positive lenses orientated along the furnace are also formed in the head. The return portion of the leisure tube launched from the sign proceeds along a second optical path that is pushed out of the sign in the direction of the head. Reflecting surfaces such as scanning mirrors are mounted and reciprocated to scan symbols. The head also has sensor means for generating an electrical analog signal indicative of the light intensity of the reflected leisure light, and also has signal processing means for processing the electrical signal into a digital electrical signal for processing the data representing the crossroads being scanned. do.

Description

Optical scanning device

As this is a public information case, the full text was not included.

1 is a front view of a portable scanning head according to the present invention.

2 is an enlarged sectional view taken along line 2-2 of FIG.

3 is a cross-sectional view taken along line 3-3 of FIG.

Claims (20)

An optical scanning device for optically scanning a symbol having portions having different light reflectivity, the optical scanning device comprising: (a) a housing having an ejection opening, (b) a light source hovering in the housing and generating an abrupt beam, and (c) the The light beam being formed in a housing to emit the light beam from the exit port, to illuminate the first region of the symbol in a first operating ocean, and to illuminate the second region of the symbol in a second operating mode; An optical scanning device comprising: control means capable of operating and deciding the direction of; and (d) operating means for operating the control means in any one of the operating modes. The optical scanning device of claim 1, wherein the housing is a manual operable actuator having a handle for hand operation and the actuating means formed on the housing. The optical scanning device of claim 2, wherein the actuator includes a multi-position trigger operatively connected to the control means to select the operating mode. 4. The optical scanning device of claim 3, wherein the first region is a static target region and the second region is a linear dynamic read region that exists throughout the symbol. 4. The optical scanning of claim 3, wherein the first area is a linear dynamic read area existing over a portion of the symbol, and the second area is a linear dynamic read area existing throughout the symbol. Device. 4. The optical scanning device of claim 3, wherein the two regions are linear dynamic reading regions placed at different distances from the ejection opening of the housing. 2. The apparatus of claim 1, wherein the light source is a leisure for generating a leisure beam, and wherein the control means are respectively operative to direct the leisure beam to illuminate the first and second regions of the symbol. Optical scanning device. An optical scanning device according to claim 1, wherein said control means includes scanning means having movable scanning elements operable to vibrate said light beam along said symbol as one of said operating aspects. 9. An optical scanning device according to claim 8, wherein said scanning means is a reflecting mirror, and said reflecting mirror is mounted to enable repeated reciprocating motion in a direction opposite to a circular arc with respect to an axis. 10. The reciprocating reciprocating motion of the scanning element according to claim 9, wherein the operating means keeps the scanning element stationary in the first operating aspect, and in the second operating aspect only the predetermined angle along the arc Optical scanning device. 10. The method of claim 9, wherein the actuating means repeatedly reciprocates the scanning element along an arc of a defined angle range in the first operating aspect and moves the scanning element greater than the defined angle range in the second operating aspect. An optical scanning device configured to repeat the reciprocating motion of the scanning element only along a circular arc at a predetermined angle. 10. The optical scanning device of claim 9, wherein the operating means causes the scanning element to repeat the reciprocating motion along an arc over a predetermined angle range on both sides of the first and second operating aspects. Scanning means for generating a leisure beam to face a target object, generating a first scanning pattern so that the user can point the desired position at the desired position at a first selected position and determine the direction thereof, and at the second selected position A reading device for a bar code symbol or the like comprising control means for generating a second scanning pattern for scanning the entirety of a symbol to be read, and detection means for receiving reflected light from and generating an electric signal represented by the symbol. The reading apparatus according to claim 13, wherein the housing has a handle for hand manipulation, the scanning means and the detection means are disposed in the housing, and the control means is a manually operable actuator formed on the housing. The reading apparatus according to claim 14, wherein the actuator includes a multi-position trigger connected to the control means for selecting the selection position. 14. The scanning means according to claim 13, wherein the scanning means has one of the selection positions and a movable scanning element for vibrating the leisure beam along the preferences, and the control means has an arc over an angle range defined at the first selection position. And repeating the reciprocating motion of the scanning element to repeat the reciprocating motion of the scanning element along an arc over a predetermined angular range greater than the limited angular range at the second selected position. A second scan for forming a leisure beam directed to a target object, forming a first scanning pattern by the leisure beam so that a user can aim the beam at a desired position and determine the direction thereof, and scan the entire symbol to be read; And a second selection position for generating a pattern, and receiving light reflected by the symbol to form an electric signal corresponding to the data represented by the symbol. 18. The apparatus according to claim 17, wherein the means for generating the leisure beam is mounted in a housing having a handle for manual operation, and an injection means and a detection means are mounted in the housing, and a manually operable actuator is mounted in the housing. Reading method to select the selection position. 19. The read method of claim 18, wherein the actuator has a multi-position trigger for selecting the scan pattern. 18. The method according to claim 17, wherein the step of making the leisure beam includes mounting a movable scanning element for vibrating the beam along a symbol and repeating the scanning element along an arc over a defined angular range at a first selected position. And a reciprocating motion to repeatedly reciprocate the scanning element over a predetermined angular range greater than the limited angular range at a second selected position. ※ Note: The disclosure is based on the initial application.