公开(公告)号：US09793452B2

公开(公告)日：2017-10-17

申请号：US14735281

申请日：2015-06-10

Applicant: National Central University

Inventor： Ching-Cherng Sun ,  Tsung-Hsun Yang ,  Te-Yuan Chung ,  Yu-Yu Chang ,  Shang-Fu Yang

IPC: H01L33/50 ,  H01L33/54 ,  H01L33/56 ,  H01L33/44

CPC classification number: H01L33/56 ,  H01L33/44 ,  H01L33/50 ,  H01L33/54

Abstract: A blue light leakage-suppressing LED structure for emitting white light includes at least one LED chip, an encapsulation element, a light output lens, and an optical fuse coating formed of a thermosensitive material; or includes at least one LED chip and an encapsulation element formed of a mixture of an encapsulation material and a thermosensitive material; or includes at least one blue LED chip, a fluorescent powder layer, an isolation region, an optical fuse layer, and a light output lens. Thanks to the hue changing property of the thermosensitive material, the LED structure can reduce the intensity of its short-wavelength light component and its overall brightness significantly before reaching the L70 threshold, after passing which the LED structure will emit excessive blue light. Thus, the user is protected from overexposure to blue light and will be reminded to replace the LED structure when the LED structure is about to malfunction.

公开(公告)号：US10685474B2

公开(公告)日：2020-06-16

申请号：US16194847

申请日：2018-11-19

Applicant: NATIONAL CENTRAL UNIVERSITY

Inventor： Yeh-Wei Yu ,  Chi-Chung Lau ,  Ching-Cherng Sun ,  Tsung-Hsun Yang ,  Tzu-Kai Wang ,  Jia-Ching Wang ,  Chien-Yao Wang ,  Kuan-Chung Wang

IPC: G06T15/04 ,  G06T19/20

Abstract: The present invention provides a method for repairing incomplete 3D depth image using 2D image information. The method includes the following steps: obtaining 2D image information and 3D depth image information; dividing 2D image information into 2D reconstruction blocks and 2D reconstruction boundaries, and corresponding to 3D reconstruction of blocks and 3D reconstruction boundaries; analyzing each 3D reconstruction block, partitioning into residual-surface blocks and repaired blocks; and proceeding at least one 3D image reconstruction, which extends with the initial depth value of the 3D depth image of each of the residual-surface block and covers all the corresponding repaired block to form a repair block and to achieve the purpose of repairing incomplete 3D depth images using 2D image information.

公开(公告)号：US09625124B2

公开(公告)日：2017-04-18

申请号：US14814724

申请日：2015-07-31

Applicant: National Central University

Inventor： Ching-Cherng Sun ,  Tsung-Hsun Yang ,  Xuan-Hao Lee ,  Chen-Hao Lee

IPC: F21V14/00 ,  F21S8/08 ,  F21V3/04 ,  F21V5/00

CPC classification number: F21V14/006 ,  F21S8/086 ,  F21V3/049 ,  F21V5/004 ,  F21V17/002 ,  F21W2131/103 ,  F21Y2105/10 ,  F21Y2115/10

Abstract: A lamp structure of an adaptive streetlight includes a housing, a plurality of light sources, and a surface-structured diffusion plate. The surface-structured diffusion plate enables the lamp structure to provide a light pattern conforming to the curvature of the road to be illuminated or other sites of application, thus reducing not only the number of lamps or streetlights required for a curvy road section, but also the associated installation cost and power consumption. The lamp structure can enhance road users' safety and the safety of our daily lives by increasing the illuminance on a curvy road and other sites of application that have special requirements.

公开(公告)号：US09952152B2

公开(公告)日：2018-04-24

申请号：US15014144

申请日：2016-02-03

Applicant: National Central University

Inventor： Tsung-Hsun Yang ,  Ching-Cherng Sun ,  Yeh-Wei Yu ,  Chao-Chuan Chen

IPC: G01N21/47 ,  G01N21/55

CPC classification number: G01N21/55 ,  G01N2021/555

Abstract: The present invention discloses an optic distribution meter that includes a testing system and an imaging system. The testing system includes an arc-shaped brace which has an extended object holder; and a rail base which has a first rail. The imaging system, set at a side of the testing system, includes a screen and an image catcher. With the implementation of the present invention, the rail base is able to rotate or move an object to a test angle with very little light blocking of measurements. Besides, with the first rail supporting the object, the incident angle of the light of a light source to the object remains unchanged when the measuring angle of the imaging system is changed. Thus ensure the accuracy of measurements of the optic distribution meter.

公开(公告)号：US09995459B2

公开(公告)日：2018-06-12

申请号：US15153897

申请日：2016-05-13

Applicant: NATIONAL CENTRAL UNIVERSITY

Inventor： Ching-Cherng Sun ,  Tsung-Hsun Yang

IPC: F21V9/00 ,  F21V9/16 ,  F21V29/74 ,  F21V7/04 ,  F21V29/76 ,  F21Y113/00

CPC classification number: F21V9/30 ,  F21V7/04 ,  F21V7/045 ,  F21V29/74 ,  F21V29/76 ,  F21Y2113/00

Abstract: The present invention discloses a laser stimulated white light lighting system, it includes a hemispherical reflector, a light-permeable board, a wavelength conversion layer, a reflective layer and plural heat-radiating structures, wherein the laser light emitted by a laser light source passes through a first light entrance hole of the hemispherical reflector and subsequently through the wavelength conversion layer to produce white light. With the implementation of the present invention, complex production process or equipment is not required thus reduce the system cost, the lighting system is capable of accurately outputting white light and promoting photon recycling effect to raise illumination efficiency. With the addition of a second light entrance hole, wavelength-division or angular division multiplexing can be carried out to raise the intensity of the output white light without increasing the etendue of the source light, thereby widening the range of application of the lighting system.