Patents by Inventor Chun-Fa Hsu
Chun-Fa Hsu has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20240069069Abstract: A probe pin cleaning pad including a foam layer, a cleaning layer, and a polishing layer is provided. The cleaning layer is disposed between the foam layer and the polishing layer. A cleaning method for a probe pin is also provided.Type: ApplicationFiled: November 10, 2023Publication date: February 29, 2024Applicant: Alliance Material Co., Ltd.Inventors: Chun-Fa Chen, Yu-Hsuen Lee, Ching-Wen Hsu, Chao-Hsuan Yang, Ting-Wei Lin
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Patent number: 8414159Abstract: A light combination device includes a reflective element and a first color separating element. The reflective element guides first color light beams emitted from at least a first light source and a second light source to propagate in a first direction. The first light source and the second light source are differently positioned in a space. The first color separating element transmits the first color light beams and reflects second color light beams emitted from at least a third light source and a fourth light source. The third light source and the fourth light source are differently positioned in the space. The first color separating element has a coating curved surface, and a curvature of the coating curved surface is varied according to positions of the third light source and the fourth light source to guide the second color light beams to propagate in the first direction.Type: GrantFiled: September 22, 2010Date of Patent: April 9, 2013Assignee: Young Optics Inc.Inventors: Chun-Fa Hsu, Chia-Chang Lee, Keng-Han Chuang
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Patent number: 8029143Abstract: An illumination system for providing an illumination beam to a light valve is provided. The illumination system includes a light source, a light integration rod, a color wheel, a first focusing unit and a second focusing unit. The light source is capable of generating the illumination beam, and the light integration rod is disposed on the transmission path of the illumination beam. The first focusing unit is disposed between the integration rod and the color wheel and is capable of focusing the illumination beam onto the color wheel. The second focusing unit is disposed between the color wheel and the light valve and is capable of focusing the illumination beam onto the light valve.Type: GrantFiled: December 12, 2007Date of Patent: October 4, 2011Assignee: Young Optics Inc.Inventors: Mei-Ling Chen, S-Wei Chen, Chao-Shun Chen, Hung-Cheng Lung, Chun-Fa Hsu, Cheng-Shun Liao
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Publication number: 20110199763Abstract: A light combination device includes a reflective element and a first color separating element. The reflective element guides first color light beams emitted from at least a first light source and a second light source to propagate in a first direction. The first light source and the second light source are differently positioned in a space. The first color separating element transmits the first color light beams and reflects second color light beams emitted from at least a third light source and a fourth light source. The third light source and the fourth light source are differently positioned in the space. The first color separating element has a coating curved surface, and a curvature of the coating curved surface is varied according to positions of the third light source and the fourth light source to guide the second color light beams to propagate in the first direction.Type: ApplicationFiled: September 22, 2010Publication date: August 18, 2011Inventors: Chun-Fa HSU, Chia-Chang LEE, Keng-Han CHUANG
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Patent number: 7905601Abstract: A color filtering device including a color filter, a plurality of polarization beam splitting units, a plurality of reflecting units, and a plurality of wave plates is provided. The color filter has a plurality of filtering parts and a plurality of light shielding parts alternately arranged thereon. Each of the polarization beam splitting units is disposed in front of one of the filtering parts and makes an angle with a corresponding filtering part. Each of the reflecting units is disposed in front of one of the light shielding parts and makes an angle with a corresponding light shielding part. Each of the wave plates is substantially parallel to one of the filtering parts. Each of the polarization beam splitting units is disposed between a pair of a wave plate and a filtering part. The color filtering device has both color filtering function and polarization conversion function.Type: GrantFiled: September 20, 2007Date of Patent: March 15, 2011Assignee: Young Optics Inc.Inventors: Mei-Ling Chen, S-Wei Chen, Chao-Shun Chen, Hung-Cheng Lung, Chun-Fa Hsu, Cheng-Shun Liao
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Publication number: 20080316430Abstract: A projection apparatus including an illumination system, a reflective light valve and an imaging system is provided. The illumination system emits an illumination beam. The reflective light valve is disposed on a transmission path of the illumination beam. The imaging system includes a first lens group, a polarization beam splitter and a second lens group. The first lens group is disposed on the transmission path of the illumination beam between the illumination system and the reflective light valve. The polarization beam splitter is disposed on the transmission path of the illumination beam between the illumination system and the first lens group. The polarization beam splitter permits the illumination beam to pass through and travel to the reflective light valve. The reflective light valve modulates the illumination beam to an image beam traveling to the polarization beam splitter. The polarization beam splitter reflects the image beam to the second lens group.Type: ApplicationFiled: October 16, 2007Publication date: December 25, 2008Applicant: YOUNG OPTICS INC.Inventors: Chun-Fa Hsu, Chao-Shun Chen, Hung-Cheng Lung, S-Wei Chen, Mei-Ling Chen, Cheng-Shun Liao
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Publication number: 20080316569Abstract: An illumination system for providing an illumination beam to a light valve is provided. The illumination system includes a light source, a light integration rod, a color wheel, a first focusing unit and a second focusing unit. The light source is capable of generating the illumination beam, and the light integration rod is disposed on the transmission path of the illumination beam. The first focusing unit is disposed between the integration rod and the color wheel and is capable of focusing the illumination beam onto the color wheel. The second focusing unit is disposed between the color wheel and the light valve and is capable of focusing the illumination beam onto the light valve.Type: ApplicationFiled: December 12, 2007Publication date: December 25, 2008Applicant: YOUNG OPTICS INC.Inventors: Mei-Ling Chen, S-Wei Chen, Chao-Shun Chen, Hung-Cheng Lung, Chun-Fa Hsu, Cheng-Shun Liao
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Publication number: 20080304015Abstract: A color filtering device including a color filter, a plurality of polarization beam splitting units, a plurality of reflecting units, and a plurality of wave plates is provided. The color filter has a plurality of filtering parts and a plurality of light shielding parts alternately arranged thereon. Each of the polarization beam splitting units is disposed in front of one of the filtering parts and makes an angle with a corresponding filtering part. Each of the reflecting units is disposed in front of one of the light shielding parts and makes an angle with a corresponding light shielding part. Each of the wave plates is substantially parallel to one of the filtering parts. Each of the polarization beam splitting units is disposed between a pair of a wave plate and a filtering part. The color filtering device has both color filtering function and polarization conversion function.Type: ApplicationFiled: September 20, 2007Publication date: December 11, 2008Applicant: YOUNG OPTICS INC.Inventors: Mei-Ling Chen, S-Wei Chen, Chao-Shun Chen, Hung-Cheng Lung, Chun-Fa Hsu, Cheng-Shun Liao
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Publication number: 20080297735Abstract: A lamp driving method for a projection apparatus is provided. The projection apparatus has a light valve and a lamp. The lamp driving method includes adjusting a brightness of the lamp to different values according to multiple states of the light valve. The lamp driving method improves the energy efficiency of the projection apparatus.Type: ApplicationFiled: September 7, 2007Publication date: December 4, 2008Applicant: YOUNG OPTICS INC.Inventors: Mei-Ling Chen, S-Wei Chen, Chao-Shun Chen, Hung-Cheng Lung, Chun-Fa Hsu, Cheng-Shun Liao