US 11,989,616 B2
Reading device
Shintaro Harada, Izunokuni Shizuoka (JP)
Assigned to Toshiba Tec Kabushiki Kaisha, Tokyo (JP)
Filed by TOSHIBA TEC KABUSHIKI KAISHA, Tokyo (JP)
Filed on Nov. 8, 2022, as Appl. No. 17/983,133.
Application 17/983,133 is a continuation of application No. PCT/JP2021/029304, filed on Aug. 6, 2021.
Claims priority of application No. 2020-160591 (JP), filed on Sep. 25, 2020.
Prior Publication US 2023/0068925 A1, Mar. 2, 2023
Int. Cl. G06K 7/10 (2006.01)
CPC G06K 7/10732 (2013.01) [G06K 7/10782 (2013.01); G06K 7/10831 (2013.01)] 4 Claims
OG exemplary drawing
 
1. A reading device provided to obtain information specifying a product, the reading device comprising:
a housing including a transparent reading window on a front side;
an imaging unit that is built in the housing and captures an image through the reading window; and
a plurality of illumination units configured to illuminate an imaging target of the imaging unit positioned in front of the housing by surface emission of light toward an outside of the housing, each of the illumination units being disposed outside an edge of the reading window and inclined with respect to the reading window such that the illumination unit protrudes from the reading window more as going further away from the reading window, wherein
the plurality of illumination units includes:
two near-field illumination units disposed on left and right sides of the reading window, respectively, and configured to illuminate a first range in a neighboring region of the reading window with a first light intensity; and
a long-distance illumination unit disposed on an upper side of the reading window and configured to illuminate a second range beyond the first range with a second light intensity greater than the first light intensity,
an inclination angle of each of the near-field illumination units with respect to the reading window being less than an inclination angle of the long-distance illumination unit with respect to the reading window.