Invention Grant
- Patent Title: Device for determining the distance to an outer surface of a roll of material and related method
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Application No.: US14587130Application Date: 2014-12-31
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Publication No.: US09791568B2Publication Date: 2017-10-17
- Inventor: John Bloomfield , Kenneth Weiner
- Applicant: STMICROELECTRONICS, INC.
- Applicant Address: US TX Coppell
- Assignee: STMicroelectronics, Inc.
- Current Assignee: STMicroelectronics, Inc.
- Current Assignee Address: US TX Coppell
- Agency: Slater Matsil, LLP
- Main IPC: G01S17/32
- IPC: G01S17/32 ; G01S17/88 ; H01L31/107 ; H01S5/183 ; H01S5/30 ; B65H26/08 ; G01S17/08 ; B65H23/182 ; B65H23/195

Abstract:
A sensing device is for sensing an outer surface of a roll of material. An infrared (IR) laser source is configured to direct IR laser radiation to the outer surface of the roll of material. A single photon avalanche diode (SPAD) detector is configured to receive reflected IR laser radiation from the outer surface of the roll of material. A controller is coupled to the IR laser source and the SPAD detector to determine a distance to the outer surface of the roll of material based upon a time-of-flight of the IR laser radiation.
Public/Granted literature
- US20160187484A1 DEVICE FOR DETERMINING THE DISTANCE TO AN OUTER SURFACE OF A ROLL OF MATERIAL AND RELATED METHOD Public/Granted day:2016-06-30
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