Patents by Inventor Young-chol Lee
Young-chol Lee 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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Patent number: 8052316Abstract: A lighting device and a display device are provided. The lighting device includes: a light source; a light dividing member; and a beam shaper. The light dividing member includes a light receiving surface, on which light is incident, and divides the incident light into a plurality of light beam groups each having a predetermined width and interval therebetween. The beam shaper is disposed between the light source and the light dividing member. Light from the light source is incident on the beam shaper, and light emitted form the beam shaper is parallel and has a cross-sectional shape corresponding to the shape of the light receiving surface of the light dividing member.Type: GrantFiled: July 23, 2007Date of Patent: November 8, 2011Assignee: Samsung Electronics Co., Ltd.Inventor: Young-chol Lee
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Patent number: 8026468Abstract: A projection display apparatus includes: an illumination optical unit which emits beams; an image display element which modulates the beams according to image information; a spatial-beam changing unit which changes spatial positions of the beams emitted from the illumination optical unit; and a uniform-beam distribution unit, disposed between the spatial-beam changing unit and the image display element, which uniformly distributes the beams. The spatial-beam changing unit includes a moveable prism, a movement of which changes the spatial positions of the beams emitted therefrom.Type: GrantFiled: April 16, 2008Date of Patent: September 27, 2011Assignee: Samsung Electronics Co., Ltd.Inventors: Young-chol Lee, Sang-hyun Sohn, Yong-dok Cha, Seok-chan Hong
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Patent number: 7929216Abstract: A collimate lens assembly is provided which includes the first collimate lens which has a total reflection surface and a plurality of refracting surfaces, and the second collimate lens which is connected to the hole, and the second collimate lens has a greater refraction ratio than the first collimate lens.Type: GrantFiled: September 14, 2009Date of Patent: April 19, 2011Assignee: Samsung Electronics Co., Ltd.Inventors: Young-chol Lee, Seok-chan Hong
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Patent number: 7922339Abstract: A compact rear projection display which can be used in mobile devices is provided. The compact rear projection display includes a main body unit which generates image signals, an image providing unit which forms and projects an image according to the image signals received from the main body unit, a transparent light guide plate, and a screen disposed at a surface of the transparent light guide plate. The transparent light guide plate guides the image incident from the image providing unit to be displayed on the screen.Type: GrantFiled: November 22, 2006Date of Patent: April 12, 2011Assignee: Samsung Electronics Co., Ltd.Inventors: Kirill Sokolov, Tae-hong Jeong, Young-chol Lee, Alexei Borodouline
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Patent number: 7828448Abstract: An illumination unit and an image projection apparatus employing the same. The illumination unit includes: a first reflective surface reflecting light incident thereon; a light-emitting device generating and emitting illuminating light; and a second reflective surface reflecting light emitted from the light-emitting device to a light source surface that includes the light-emitting device.Type: GrantFiled: March 30, 2006Date of Patent: November 9, 2010Assignee: Samsung Electronics Co., Ltd.Inventors: Jong-hoi Kim, Won-yong Lee, Young-chol Lee, Kye-hoon Lee
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Patent number: 7789516Abstract: A thin projection type image display device with a low chin height includes a cabinet, a screen, a projection optical system, an optical path changing unit, and a reflecting unit. The screen is disposed on a front side of the cabinet. The projection optical system enlarges and projects an image formed by a display element, and the optical path changing unit is disposed on the bottom of the cabinet to reflect the image enlarged and projected by the projection optical system. The reflection unit is disposed obliquely to the screen and below the screen to reflect the image reflected by the optical path changing unit toward the screen. The projection optical system is disposed in a space above a horizontal plane perpendicular to the screen, behind the front side of the cabinet, and below an optical path of light incident on a bottom of the screen.Type: GrantFiled: September 26, 2006Date of Patent: September 7, 2010Assignee: Samsung Electronics Co., Ltd.Inventors: Young-chol Lee, Kun-Ho Cho, Jong-soo Lee, Jae-hyun Park
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Patent number: 7781714Abstract: A projection display projects color images on a screen. The projection display includes: an illuminating unit which emits a plurality of linear beams that are in parallel to each other; a scroll unit which scrolls the plurality of linear beams; a line type light modulator which modulates the plurality of linear beams according to image signals; and a scan unit which scans the plurality of linear beams in a direction perpendicular to the scrolling direction.Type: GrantFiled: May 14, 2007Date of Patent: August 24, 2010Assignee: Samsung Electronics Co., Ltd.Inventors: Young-chol Lee, Joon-seok Moon, Kirill Sokolov
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Patent number: 7750993Abstract: A display device using an external light, includes: a main body including a light source; at least one auxiliary light source; and a display unit. The display unit includes a first end hinged with the main body such that the display unit can be opened and closed. The display unit also includes a transmissive display panel which forms an image. When the display unit is open, external light is incident onto the display panel and light from the at least one auxiliary light source is selectively supplied to the display panel.Type: GrantFiled: January 25, 2007Date of Patent: July 6, 2010Assignee: Samsung Electronics Co., Ltd.Inventors: Kyong-wook Kim, Young-chol Lee, Yoon-cheol Shin
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Publication number: 20100157434Abstract: A collimate lens assembly is provided which includes the first collimate lens which has a total reflection surface and a plurality of refracting surfaces, and the second collimate lens which is connected to the hole, and the second collimate lens has a greater refraction ratio than the first collimate lens.Type: ApplicationFiled: September 14, 2009Publication date: June 24, 2010Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Young-chol LEE, Seok-chan HONG
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Patent number: 7717571Abstract: A projector/projection type switchable display apparatus includes: a main body unit having an image producing unit forming and emitting an image; and a cover unit that is rotatably connected to the main body unit. The cover unit includes an aspherical mirror enlarging and reflecting the image emitted from the main body unit; and a screen on which the image enlarged and reflected by the aspherical mirror is displayed.Type: GrantFiled: November 15, 2006Date of Patent: May 18, 2010Assignee: Samsung Electronics Co., Ltd.Inventor: Young-chol Lee
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Patent number: 7568805Abstract: An illumination unit includes multiple light source units to emit light having different wavelengths, and a synthesizing prism to synthesize the emitted light. The synthesizing prism includes a first triangular prism (tp) having a first outer surface (os) to transmit (reflect) the light according to the light's input a direction, and first and second boundary surfaces (bs), a second tp having a second os to transmit the light, a third bs facing the second bs, and a fourth bs, a third tp having a third os to transmit (reflect) the light according the light's input direction, a fifth bs facing the fourth bs, and a sixth bs facing the first bs, and a color separation portion arranged at least one of positions between the second and third bs, the fourth and fifth bs, and the sixth and first bs, to selectively transmit (reflect) the light according to wavelengths thereof.Type: GrantFiled: June 17, 2005Date of Patent: August 4, 2009Assignee: Samsung Electronics Co., Ltd.Inventors: Kye-hoon Lee, Won-yong Lee, Young-chol Lee, Kirill Sokolov
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Patent number: 7543945Abstract: A projection display includes three illumination units to emit red, green, and blue beams, at least one optical modulator to modulate the red, green, and blue beams to be suitable for image data, and projection optics to magnify and project the light beams emitted from the at least one optical modulator. Each of the illumination units includes: a collimator including a parabolic first reflective surface; a compact light source located at a focal point of the first reflective surface; a polarizer that transforms a light beam emitted from the collimator into a P- or S-polarized beam; and an integrator that transforms the light beam emitted from the polarizer to be emitted at a uniform intensity of light.Type: GrantFiled: April 7, 2004Date of Patent: June 9, 2009Assignee: Samsung Electronics Co., Ltd.Inventors: Young-chol Lee, Dong-ha Kim, Yasunori Kuratomi, Il-kweon Moon
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Patent number: 7510288Abstract: A display device using external light and including: a light guide panel guiding light; an internal light source disposed on at least one side of the light guide panel and supplying internal light to the light guide panel; an optical filter disposed on a rear surface of the light guide panel to be exposed to the outside, and reflecting light with specific wavelengths and transmitting light with wavelengths other than the specific wavelengths among the internal light emitted from the internal light source and external light; and a display panel forming an image using the internal light and the external light which are illuminated through the light guide panel and the optical filter. The display device improves visibility using both external light and internal light by simply adding the optical filter to an existing display device.Type: GrantFiled: February 21, 2007Date of Patent: March 31, 2009Assignee: Samsung Electronics Co., Ltd.Inventors: Yoon-cheol Shin, Moon-cheol Kim, Young-chol Lee
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Patent number: 7502534Abstract: A retro-reflect type light pipe, an illumination device including the same, and a projection display including the illumination device are provided. The retro-reflective type light pipe includes an incident portion through which light is incident, a guide portion which guides the incident light such that the incident light propagates internally therewithin while being reflected at inner walls thereof, and which thereby mixes the incident light thus providing uniform light. A retro-reflective portion, provided at one end of the guide portion, re-reflects the incident light toward the incident portion. The illumination device includes a light source, the retro-reflective type light pipe, and an optical path-changing member provided between the light source and the retro-reflective type light pipe, which changes the direction of the light emitted from the light source such that the light from the light source propagates toward the retro-reflective type light pipe.Type: GrantFiled: June 21, 2007Date of Patent: March 10, 2009Assignee: Samsung Electronics Co., Ltd.Inventors: Young-chol Lee, Kirill Sokolov
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Publication number: 20090002638Abstract: A projection display apparatus includes: an illumination optical unit which emits beams; an image display element which modulates the beams according to image information; a spatial-beam changing unit which changes spatial positions of the beams emitted from the illumination optical unit; and a uniform-beam distribution unit, disposed between the spatial-beam changing unit and the image display element, which uniformly distributes the beams. The spatial-beam changing unit includes a moveable prism, a movement of which changes the spatial positions of the beams emitted therefrom.Type: ApplicationFiled: April 16, 2008Publication date: January 1, 2009Applicant: Samsung Electronics Co., Ltd.Inventors: Young-chol LEE, Sang-hyun Sohn, Yong-dok Cha, Seok-chan Hong
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Patent number: 7448758Abstract: An illumination unit includes first, second, third, and fourth light source units to emit first, second, third, and fourth light beams of different wavelength bands, and a hexahedral color synthesis prism to synthesize the first, second, third, and fourth light beams emitted from the first, second, third, and fourth light source units to propagate the first, second, third, and fourth light beams can propagate along the same path with respect to each other.Type: GrantFiled: September 26, 2005Date of Patent: November 11, 2008Assignee: Samsung Electronics Co., LtdInventors: Jong-hoi Kim, Young-chol Lee, Kye-hoon Lee, Won-yong Lee
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Publication number: 20080095511Abstract: A retro-reflect type light pipe, an illumination device including the same, and a projection display including the illumination device are provided. The retro-reflective type light pipe includes an incident portion through which light is incident, a guide portion which guides the incident light such that the incident light propagates internally therewithin while being reflected at inner walls thereof, and which thereby mixes the incident light thus providing uniform light. A retro-reflective portion, provided at one end of the guide portion, re-reflects the incident light toward the incident portion. The illumination device includes a light source, the retro-reflective type light pipe, and an optical path-changing member provided between the light source and the retro-reflective type light pipe, which changes the direction of the light emitted from the light source such that the light from the light source propagates toward the retro-reflective type light pipe.Type: ApplicationFiled: June 21, 2007Publication date: April 24, 2008Applicant: SAMSUNG ELECTRONICS CO., LTDInventors: Young-chol Lee, Kirill Sokolov
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Publication number: 20080068514Abstract: A projection display includes: an illumination unit which irradiates a plurality of single color light beams; a first scanner scanning the plurality of light beams irradiated from the illumination unit along a first direction; a light modulator with a linear array of micro-electromechanical system (MEMS) devices that are arranged parallel to the first direction so as to turn a light beam scanned by the first scanner ON or OFF for each pixel; an F-? lens disposed between the first scanner and the light modulator and having a first entrance pupil on which a light beam scanned by the first scanner is incident and a second entrance pupil on which light beams modulated by the light modulator are incident; and a second scanner disposed opposite to the second entrance pupil of the F-? lens and which scans a light beam passing through the second entrance pupil of the F-? lens on a screen along a second direction that is orthogonal to the first direction.Type: ApplicationFiled: August 13, 2007Publication date: March 20, 2008Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Kirill SOKOLOV, Dae-sik KIM, Young-chol LEE, Alexei BORODOULINE
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Patent number: 7331694Abstract: An illuminating unit having a plurality of light emitting devices and collimators and a projection type image display apparatus using the same are provided. The illuminating unit includes: a plurality of light emitting devices which output light beams of predetermined wavelengths; a plurality of collimators, each having a parabolic reflection surface for reflecting the light beam in a predetermined direction, a mounting section for locating the light emitting device at the focal point of the parabolic reflection surface, a light output surface opposite to the parabolic reflection surface, and a light guide section for guiding the light beam reflected from the parabolic reflection surface to the light output surface; and one or more fixing members having two or more steps for mounting the light emitting devices and the collimators on their top surface. A plurality of light emitting devices and collimators are efficiently arranged in a small space.Type: GrantFiled: November 8, 2005Date of Patent: February 19, 2008Assignee: Samsung Electronics Co., Ltd.Inventors: Kye-hoon Lee, Won-yong Lee, Young-chol Lee
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Patent number: 7331680Abstract: An illumination unit with an improved color synthesis prism, which can synthesize light beams emitted from compact light sources, and a projection type image display apparatus employing the illumination unit.Type: GrantFiled: September 26, 2005Date of Patent: February 19, 2008Assignee: Samsung Electronics Co., Ltd.Inventors: Kye-hoon Lee, Young-chol Lee, Won-yong Lee