Near-field optical sensing system

A technology of optical sensing and light source, applied in the field of optical sensors, can solve problems such as efficiency constraints

Inactive Publication Date: 2015-12-23
SNAPTRACK
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Similarly, some gesture recognition systems rely on the use of cameras that sense visible l

Method used

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Embodiment Construction

[0030] The following description refers to certain embodiments for the purpose of describing the innovative aspects of the invention. However, those skilled in the art will readily recognize that the teachings herein can be applied in many different ways. The described embodiments can be implemented in any device, apparatus, or system that can be configured to display an image, whether in motion (e.g., video) or stationary (e.g., still image), and whether the image is text , graphic or pictorial. Rather, it is contemplated that the described embodiments may be included in or associated with a variety of electronic devices such as, but not limited to, mobile phones, cellular phones with multimedia Internet capabilities, mobile television receivers, wireless devices, smart Telephone, Devices, Personal Data Assistants (PDAs), Wireless Email Receivers, Handheld or Laptop Computers, Netbooks, Notebook Computers, Smart Notebook Computers, Tablet Computers, Printers, Copiers, Scan...

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Abstract

This disclosure provides systems, methods and apparatus, including computer programs encoded on computer storage media, for sensing touch and/or gestures in the near-field area overlying a light-guiding layer within a device or other optical sensing system. In one aspect, modulated infrared light is emitted into the overlying area, and the light reflected by objects within the overlying area is redirected through the light-guiding layer to infrared sensors. In one aspect, a masking structure can be located between the light-guiding layer and the infrared sensors. In some aspects, probability mapping or backtracing can be used to estimate the locations of objects within the overlying area.

Description

technical field [0001] The present invention relates to optical sensors, and in particular, to optical touch and gesture sensing devices that can be used alone or in combination with electromechanical systems and devices. Background technique [0002] Electromechanical systems (EMS) include devices having electrical and mechanical elements, actuators, transducers, sensors, optical components such as mirrors and optical films, and electronics. EMS devices or elements can be fabricated on a variety of scales, including but not limited to microscale and nanoscale. For example, microelectromechanical systems (MEMS) devices may include structures ranging in size from about one micron to hundreds of microns or more. Nanoelectromechanical systems (NEMS) devices can include structures with sizes smaller than a micron, including, for example, sizes smaller than hundreds of nanometers. Micromechanical elements may be created using deposition, etching, and / or other micromachining pro...

Claims

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Application Information

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IPC IPC(8): G06F3/042
CPCG02B6/0036G02B6/0076G06F3/0416G06F3/0428G06F2203/04108G06F2203/04109G01J5/0818
Inventor 崔西权穆哈麦德·伊布雷赫·塞赞鲁塞尔·韦恩·格鲁尔克张强
Owner SNAPTRACK
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