The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 31, 2022
Filed:
May. 17, 2017
Hand Held Products, Inc., Fort Mill, SC (US);
Chen Feng, Morris Plains, NJ (US);
Jie Ren, Morris Plains, NJ (US);
Yunxin Ouyang, Morris Plains, NJ (US);
Hand Held Products, Inc., Fort Mill, SC (US);
Abstract
A multi-functional optical illuminator comprises: a light pipe () with an open frame structure for visual aiming of the illuminator to facilitate an alignment of a barcode; and a circuit board (), attached to a back opening of the light pipe (), comprising six dark field LEDs () for generating six dark field illuminations and two bright field LEDs () for generating bright field illuminations; wherein, the two bright field LEDs () produce two alternating point sources for providing bright field illuminations in different directions to minimize a specular reflection hot spot without using any diffuser during the bright field illuminations; wherein, chamfered inner edges of the light pipe () emit the dark field illuminations in different orientations from the light pipe (). The illuminator is designed to provide dual-field, multi-color, multi-directional illumination. The non-closed form option not only can further reduce the weight but also can allow arrange opening area clearance for: (1) visual aiming and alignment in application, especially for hand held application; (2) reducing illumination crosstalk to unwanted directions; and for (3) mechanical integration. The improvements allow the illuminator to read direct product marking (DPM) type of barcodes.