Abstract: A three-dimension (3-D) printing method and a 3-D printing system are provided. The method includes: generating printing information according to model information of a 3-D object; controlling a 3-D printing apparatus to perform a 3-D printing operation, so as to print a supporting object and the 3-D object, wherein the supporting object is used to support the 3-D object. Furthermore, the step of generating the printing information includes: detecting a floating contour of the 3-D object on the first printing layer according to the model information; and removing printing information of the supporting object from printing information corresponding to a second printing layer according to the floating contour. Thereby, difficulty of removing the supporting object can be reduced.

Abstract: A three-dimensional (3-D) printing apparatus and a three dimensional printing method are provided. The three dimensional printing method includes following steps. A closed printing path of a closed-contour structure is obtained, wherein the closed printing path includes a printing start point and a printing end point. A printing head is controlled to move from the printing start point and along a front segment of the closed printing path according to a first moving speed, and the printing head is controlled to simultaneously extrude a building material. After the printing head moves along the front segment of the closed printing path, the printing head is controlled to move to the printing end point along a rear segment of the closed printing path according to a second moving speed, and the printing head is controlled to simultaneously extrude the building material. The second moving speed is less than the first moving speed.

Abstract: A method of slicing and printing multi-color 3D object is provided. The method includes following steps of: loading a coordinate information and a color information of a multi-color 3D object; executing a slicing process to generate a plurality of object printing slices and a plurality of object images; generating a plurality of pollution-blocking printing slices and making each pollution-blocking printing slice partially overlap an edge of the same-layer object printing slice; controlling a modeling nozzle of a multi-color 3D printer to print the object printing slices layer by layer, printing each pollution-blocking printing slice partially overlapping the same-layer object printing slice after the same-layer object printing slice is printed, and controlling a coloring nozzle of the multi-color 3D printer to color each of printed object printing slice after the same-layer pollution-blocking printing slice is printed.

Abstract: A method and a system including at least three image capturing devices for generating depth information are proposed. Multiple depth maps associated with a specific scene are obtained, where each of the depth maps corresponds to a different group of the image capturing devices and a different estimated region of the specific scene. For each pixel corresponding to the specific scene, whether the pixel is within a joint overlapping region of its estimated region is determined. If no, the depth information of the pixel is set according to its depth value in the depth map corresponding to a non-joint overlapping region of its estimated region. If yes, the depth information of the pixel is set according to its depth values in the depth maps corresponding to the joint overlapping region within its estimated region. An integrated depth map is generated by using the depth information of all the pixels.

Abstract: A printing slicing method for 3D model for automatically adding a required supporting structure to a 3D model is disclosed. The method includes following steps. Retrieve a minimum overlapping ratio corresponding to a layer height. Execute a slicing process and analyze an overlapping ratio between two molded object slices which form a suspended slope. Add the supporting structure below the corresponding suspended slope when determining that the overlapping ratio is less than the minimum overlap ratio. This disclosed example can effectively prevent the suspended part of a printed 3D model entity from a deformation because of the adhesion area thereon is too small, and can also effectively save the printing time and the usage amount of supplies.

Abstract: A printing method using a low melting-point material is disclosed. The method first controls a nozzle of a 3D printer to move to a position corresponding to an internal-contour of a 3D model for printing the internal-contour upon a printing platform, then controls the nozzle to move to other position corresponding to an exterior-contour of the 3D model for printing the exterior-contour. After completing the exterior-contour, the method controls the nozzle to move inwardly to leave away from the exterior-contour, and then changes a related position between the nozzle and the printing platform upon z-axis for a next printing-layer. The method prevents a drooling event of the low melting-point material occurs at the exterior-contour and destroys an appearance of the 3D model.

Abstract: An optical touch device and a sensing method thereof are provided. The optical touch device includes a plurality of optical sensors and a processing unit. The optical sensors are arranged around a touch plane and are spaced from each other. The two adjacent optical sensors located at one side of the touch plane are defined as one set of an optical sensing module, such that the optical sensors are paired to form multiple sets of the optical sensing modules. The processing unit generates a plurality of touch coordinates data corresponding to the plurality sets of the optical sensing modules according to the optical touch data, and determines whether the touch coordinates data corresponding to each set of the optical sensing modules is in at least one touch-excluded area corresponding to each set of the optical sensing modules, and respectively excludes the touch coordinates data in the touch-excluded area.

Abstract: A self-alignment filling level detecting device has a reflector and a sensor detachable from each other. The sensor has a light emitter, a light sensor, and a controller. The light sensor receives different light intensities when the reflector is assembled to the sensor and when the reflector is not assembled to the sensor. Thus, the controller determines whether the reflector has been accurately engaged and aligned with the sensor or not based on sensing results of the light sensor. Since the reflector and the sensor are detachable from each other, either the reflector or the sensor can be replaced individually if any one of them malfunctions.

Abstract: A self-alignment filling level detecting device has a reflector and a sensor detachable from each other. The sensor has a light emitter, a light sensor, and a controller. The light sensor receives different light intensities when the reflector is assembled to the sensor and when the reflector is not assembled to the sensor. Thus, the controller determines whether the reflector has been accurately engaged and aligned with the sensor or not based on sensing results of the light sensor. Since the reflector and the sensor are detachable from each other, either the reflector or the sensor can be replaced individually if any one of them malfunctions.

Abstract: The invention relates to a self-calibration method for a photoelectric liquid level switch and apparatus using the same. The apparatus has a control module, a light emitting module and a light sensing module. The light emitting module emits a light beam into a container. The light sensing module then detects a reflected light beam. The control module acquires two values respectively standing for a first liquid level status and a second liquid level status. When a default threshold value is beyond a range between the two values, the control module calculates a new threshold value in the range between the two values. The control module then replaces the default threshold value with the new threshold value. The threshold value is adjustable for any kind of liquid.

Abstract: A touch device to sense and compute the coordinate of a touch object is provided. The touch device comprises a panel, a light-emitting element, an image sensor, a reflective strip and a processing unit. The panel has a sensing area surrounded by first to fourth boundaries where the first and the third boundaries define an x direction and the other two boundaries defines y direction. The light-emitting element and the image sensor are located on the first boundary with a specific distance therebetween. The reflective strip is located on the second to fourth boundaries. When the touch object touches the sensing area, a first and a second light path from the light-emitting element to the image sensor are blocked to form a real and a virtual image such that the processing unit computes the coordinate of the touch object according to the real and the virtual images. A touch method is disclosed herein as well.

Abstract: A touch device to sense and compute the coordinate of a touch object is provided. The touch device comprises a panel, a light-emitting element, an image sensor, a reflective strip and a processing unit. The panel has a sensing area surrounded by first to fourth boundaries where the first and the third boundaries define an x direction and the other two boundaries defines y direction. The light-emitting element and the image sensor are located on the first boundary with a specific distance therebetween. The reflective strip is located on the second to fourth boundaries. When the touch object touches the sensing area, a first and a second light path from the light-emitting element to the image sensor are blocked to form a real and a virtual image such that the processing unit computes the coordinate of the touch object according to the real and the virtual images. A touch method is disclosed herein as well.

Abstract: An optical touch panel includes a frame, a first and a second image capture units, a first and second light sources, a first reflective element and a block element. The first and second image capture units are disposed on the frame and respectively disposed adjacent to the first and second light sources. The line between the first and second light sources defines a first connecting line. The reflective element disposed on a first side of the frame has a top point. The line between the top point and the second image capture unit defines a second connecting line. The block element blocks the first connecting line, but does not block the second connecting line.

Abstract: A light-concentrating panel is disclosed. The light-concentrating panel comprises a planar light collecting element and a linear light collecting element. The planar light collecting element receives and collects the planar light, and then emits out as linear light. The linear light collecting element receives the linear light. The linear light from the planar collecting element enters the linear light collecting element by passing a planar-linear imaginary plane, which is located between the planar light collecting element and the linear light collecting element. The linear light from the planar collecting element are collected and turned into the spot light by the linear light collecting element.

Abstract: An optical touch module includes a display panel, an optical sensor and a light emitting unit. The optical sensor is disposed on a corner of the display panel. The light emitting unit is disposed on the optical sensor and includes a light emitting member and a compensating member. The light emitting member emits light with a first light strength along a first direction and light with a second light strength along a second direction, wherein the first light strength is greater than the second light strength. The compensating member is disposed on a side of the light emitting member. After the lights pass through the compensating member, the second light strength is increased.

Abstract: A display module is provided. The display module includes a housing, a display panel, a frame, a camera module, and a reflective strip. The display panel is disposed in the housing. The frame is disposed between the housing and the display panel to limit a position of the display panel. The camera module and the reflective strip are disposed on the frame and on a same horizontal level based on the frame. When the display panel is deformed, the camera module and the reflective strip remain on the same horizontal level.

Abstract: An optical touch panel includes a frame, a first and a second image capture units, a first and second light sources, a first reflective element and a block element. The first and second image capture units are disposed on the frame and respectively disposed adjacent to the first and second light sources. The line between the first and second light sources defines a first connecting line. The reflective element disposed on a first side of the frame has a top point. The line between the top point and the second image capture unit defines a second connecting line. The block element blocks the first connecting line, but does not block the second connecting line.

Abstract: The invention discloses an optical sensing screen for selectively sensing an object and a light pen. A first photo-emitter is disposed in a light pen for emitting a first light. The optical sensing screen includes a panel, an illuminating device, at least two first photo-sensing devices, and a processor. The illuminating device is used to form a background light source. The first photo-sensing devices are used to detect the first light and the background light source. The processor is capable of calculating the coordinate of the object according to the interdicted background light source. When any of the first photo-sensing devices detects the light pen, the processor will drive the illuminating device not to form the background light source and to calculate the coordinate of the first photo-emitter according to the detected first light.

Abstract: The invention discloses a light compensation method applied in an optical touch system. The optical touch system includes a light emitting diode, an optical detector, and a reflector. The light emitting diode is used to illuminate toward the reflector. The reflector has a pattern. The optical detector is used to sense the illuminated reflector. The light compensation method of the invention provides a light compensation solution for overly brightness or light decay of the light emitting diode due to usage over a long period in the optical touch system.

Abstract: A lens module is provided. The lens module comprises at least one square-shaped lens, a square-shaped filter, a circuit module and a plate base. The square-shaped lens comprises a light-transmitting part and two wings formed on two sides of the light-transmitting part. The circuit module comprises a light sensor. The first surface of the plate base comprises a plurality of slots, wherein the square-shaped lens, the square-shaped filter and the circuit module can be adapted to the slots respectively. A sidewall of the plate base further comprises an incident hole to make an incident light pass vertically through the square-shaped lens and the square-shaped filter and further sensed by the light sensor to generate an image signal to the circuit module.