公开(公告)号：WO2020157230A1

公开(公告)日：2020-08-06

申请号：PCT/EP2020/052345

申请日：2020-01-30

Applicant: AMS INTERNATIONAL AG

Inventor： LIU, Jian ,  SCHMIDEGG, Klaus ,  HERNANDEZ, Whitney ,  THEILER, Helmut ,  KRIEBERNEGG, Josef ,  KELLY, George Richard ,  KROESE, Matt

IPC: H03K17/94 ,  H03K17/945 ,  G06F3/042

Abstract: An apparatus includes a display screen, and an optical proximity sensor module disposed behind the display screen. The optical proximity sensor module includes a light emitter operable to produce light having a wavelength for transmission through the display screen toward a target object, and a light sensor operable to sense light reflected by the target object and having the wavelength. The optical proximity sensor module can includes means for reducing a maximum energy density of a light beam produced by the light emitter. The means for reducing the maximum energy density of the light beam is disposed between the light emitter and the display screen so as to intersect the light beam produced by the light emitter. In some cases, there are multiple light emitters collectively operable to provide sufficient optical energy for proximity sensing without producing a visible spot on the display screen. These and other techniques can help reduce or eliminate display screen distortion caused by energy from the light emitters.

公开(公告)号：WO2018033419A1

公开(公告)日：2018-02-22

申请号：PCT/EP2017/069915

申请日：2017-08-07

Applicant: AMS INTERNATIONAL AG

Inventor： GREIMEL-RECHLING, Bernhard ,  BLIEM, Peter ,  LENHARD, Herbert ,  KRIEBERNEGG, Josef ,  LECHNER, Joachim ,  HALPER, Christian

IPC: G01J1/44 ,  G01J1/18 ,  G01J1/46

CPC classification number: G01J1/46 ,  G01J1/18 ,  G01J2001/4426 ,  G01J2001/444 ,  G01J2001/446

Abstract: An optical sensor arrangement comprises a photodiode (11), an integrator (12) with an integrator input (15) coupled to the photodiode (11), a comparator (13) with a first input (18) coupled to an integrator output (16) of the integrator (12), and a reference capacitor circuit (14) that is coupled to the integrator input (15) and is designed to provide a charge package to the integrator input (15). In a start phase (A), charge packages are provided to the integrator input (15), until a comparator input voltage (VIN) at the first input (18) of the comparator (13) crosses a comparator switching point.

Abstract translation: 光学传感器装置包括光电二极管（11），具有耦合到光电二极管（11）的积分器输入（15）的积分器（12），具有第一输入端（18）的比较器（13） ）耦合到积分器（12）的积分器输出（16）;以及参考电容器电路（14），耦合到积分器输入（15）并且被设计为向积分器输入（15）提供电荷包。 在开始阶段（A）中，向积分器输入端（15）提供电荷包，直到比较器（13）的第一输入端（18）处的比较器输入电压（VIN）越过比较器切换点。