公开(公告)号：US20150253934A1

公开(公告)日：2015-09-10

申请号：US14615670

申请日：2015-02-06

Applicant: PIXART IMAGING INC.

Inventor： YU-CHIA LIN ,  CHUAN-CHING LIN ,  YU-HSIN LIN ,  HAN-PING CHENG ,  TZUNG-MIN SU ,  CHIH-HSIN LIN ,  HSIN-CHI CHENG ,  CHUN-SHENG LIN ,  YU-HSIANG HUANG ,  KUAN-HSU CHEN ,  CHUN-YI LU

IPC: G06F3/042

CPC classification number: G06F3/0428 ,  G06F3/0418

Abstract: The present disclosure provides an object detection method including: pre-storing a lookup table of touch reference values, wherein the lookup table of touch reference values records a plurality of touch reference values associated with image positions of a plurality of calibration object images formed in calibration images captured by a first image sensor; capturing a first image, wherein the first image has at least an object image corresponding to a pointer formed therein; generating a first light distribution curve according to the first image; defining a first detection region in the first light distribution curve; obtaining at least one touch reference value associated with the object image using the lookup table of touch reference values; comparing at least one brightness value within the first detection region of the first light distribution curve with the at least one touch reference value obtained.

Abstract translation: 本公开提供一种对象检测方法，包括：预存储触摸参考值的查找表，其中所述触摸参考值的查找表记录与校准中形成的多个校准对象图像的图像位置相关联的多个触摸参考值 由第一图像传感器拍摄的图像; 拍摄第一图像，其中所述第一图像至少具有与其中形成的指针相对应的对象图像; 根据第一图像生成第一光分布曲线; 在第一光分布曲线中限定第一检测区域; 使用所述触摸参考值的查找表获得与所述对象图像相关联的至少一个触摸参考值; 将第一光分布曲线的第一检测区域内的至少一个亮度值与所获得的至少一个触摸参考值进行比较。

公开(公告)号：US20150212255A1

公开(公告)日：2015-07-30

申请号：US14540187

申请日：2014-11-13

Applicant: PIXART IMAGING INC.

Inventor： HUNG-CHING LAI ,  HUNG-YU LAI ,  YU-HSIANG HUANG

IPC: F21V8/00 ,  H01L33/54 ,  H01L33/62

CPC classification number: G02B6/0055 ,  G02B6/0045 ,  G02B6/0065 ,  G02B6/0078 ,  H01L33/54 ,  H01L33/58 ,  H01L33/60 ,  H01L33/62

Abstract: There is provided a light source module including an LED die and a light guide member. The light guide member is formed by injection molding to encapsulate the LED die. The light guide member is coated with a reflection film on a part of surface thereof and has at least one tilted surface opposite to the LED die.

Abstract translation: 提供了一种包括LED管芯和导光构件的光源模块。 导光构件通过注塑成型以封装LED管芯。 导光构件在其表面的一部分上涂覆有反射膜，并且具有与LED管芯相对的至少一个倾斜表面。

公开(公告)号：US20140225868A1

公开(公告)日：2014-08-14

申请号：US14040201

申请日：2013-09-27

Applicant: Pixart Imaging Inc.

Inventor： YU-HSIANG HUANG ,  CHUN-YI LU ,  TZUNG-MIN SU ,  CHIH-HSIN LIN ,  JIA-HONG HUANG

IPC: G06F3/042 ,  G02B13/14 ,  G02B13/18

CPC classification number: G02B13/18 ,  G02B19/0014 ,  G02B19/0061 ,  G06F3/0428

Abstract: An optical lens is configured in front of an image-capturing lens of an image-capturing device. A light-emitting unit of the image-capturing device emits a light beam. The optical lens includes a pair of peripheral compensation portions and a central diverging portion. Each peripheral compensation portion has a first convex surface and a first concave surface arranged opposite to the first convex surface. The central diverging portion is arranged between the peripheral compensation portions, and has a second concave surface and an oppositely arranged light incident surface. The second concave surface is arranged between the first convex surfaces. The light incident surface is arranged between the first concave surfaces. The optical axis of the light beam sequentially aligns with the light incident surface and the second concave surface. The light rays of the light beam pass through the first concave surface and the first convex surface in sequence.

Abstract translation: 光学透镜配置在图像拍摄装置的图像拍摄透镜的前方。 图像捕获装置的发光单元发射光束。 光学透镜包括一对外围补偿部分和中心发散部分。 每个外围补偿部分具有与第一凸面相对布置的第一凸面和第一凹面。 中心发散部分配置在周边补偿部之间，具有第二凹面和相对配置的光入射面。 第二凹面设置在第一凸面之间。 光入射面设置在第一凹面之间。 光束的光轴顺序地与光入射面和第二凹面对准。 光束的光线依次穿过第一凹面和第一凸面。

公开(公告)号：US20150145832A1

公开(公告)日：2015-05-28

申请号：US14473138

申请日：2014-08-29

Applicant: PIXART IMAGING INC.

Inventor： YU-CHIA LIN ,  YU-HSIANG HUANG

IPC: G06F3/041 ,  G06F3/042

CPC classification number: G06F3/0416 ,  G06F3/0428 ,  G06F2203/04101 ,  G06F2203/04104

Abstract: An optical touch system including a touch surface, a plurality of image sensors, a calculation unit and an identification unit is provided. The touch surface is for interactive operation with an object. Each of the image sensors is configured to capture an image frame looking across the touch surface. The calculation unit is configured to calculate a coordinate of the object and an operating depth of the object corresponding to each of the image sensors according to the image frame. The identification unit is configured to increase a count value when the coordinate is within an operable range of one of the image sensors and the operating depth corresponding to the image sensor exceeds a depth threshold to accordingly perform hovering identification according to the count value.

Abstract translation: 提供了包括触摸面，多个图像传感器，计算单元和识别单元的光学触摸系统。 触摸表面用于与物体进行交互操作。 每个图像传感器被配置为捕获跨越触摸表面的图像帧。 计算单元被配置为根据图像帧计算对象的坐标和对应于每个图像传感器的对象的操作深度。 识别单元被配置为当坐标在图像传感器之一的可操作范围内时增加计数值，并且与图像传感器相对应的操作深度超过深度阈值，从而根据计数值执行悬停识别。