Patents by Inventor Makoto Oe
Makoto Oe 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: 5863113Abstract: A plane light source unit which may be advantageously used as a backlighting means for a liquid crystal display device, and which includes a transparent light guide having a side end surface as a light incident surface, a surface perpendicular to the light incident surface as a light emitting surface, and a light reflecting layer provided on an opposite surface to the light emitting surface; and a second element having a large number of prism units formed on the light emitting surface of the transparent light guide which receives the light emitted from the transparent light guide and emits the light in a predetermined direction; wherein at least one of the light emitting surface and the opposite surface of said transparent light guide has a directional light emitting function which emits the incident light from the light incident surface of the transparent light guide in an oblique direction to the incident light and has a regulation function which makes the luminance of the light through the light emitting sType: GrantFiled: September 30, 1997Date of Patent: January 26, 1999Assignee: Mitsubishi Rayon Co., Ltd.Inventors: Makoto Oe, Issei Chiba
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Patent number: 5711589Abstract: A plane light source unit which may be advantageously used as a backlighting means for a liquid crystal display device, and which includes a transparent light guide having a side end surface as a light incident surface, a surface perpendicular to the light incident surface as a light emitting surface, and a light reflecting layer provided on an opposite surface to the light emitting surface; and a second element having a large number of prism units formed on the light emitting surface of the transparent light guide which receives the light emitted from the transparent light guide and emits the light in a predetermined direction; wherein at least one of the light emitting surface and the opposite surface of said transparent light guide has a directional light emitting function which emits the incident light from the light incident surface of the transparent light guide in an oblique direction to the incident light and has a regulation function which makes the luminance of the light through the light emitting sType: GrantFiled: April 10, 1996Date of Patent: January 27, 1998Assignee: Mitsubishi Rayon Co., Ltd.Inventors: Makoto Oe, Issei Chiba
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Patent number: 5193899Abstract: A box-type planar light-source device has incorporated therein a linear light source and is provided with a reflecting surface and a multi-prism sheet. The reflecting surface has such function that a major portion of a light reflected by the reflecting surface is obliquely incident upon the multi-prism sheet. The multi-prism sheet has its inner surface formed with a group of prisms so arranged as to extend in parallel relation to the light source and having such function that the light incident directly or obliquely in reflection outgoes in concentration toward a predetermined direction. Accordingly, so as to eliminate portion by the fact that the light outgoing at an angle separated from the normal direction converges at the dark portion. A dark-portion removing sheet for eliminating a dark portion at a location immediately above the light source is arranged on the side of the front face of the multi-prism sheet.Type: GrantFiled: October 31, 1991Date of Patent: March 16, 1993Assignee: Mitsubishi Rayon Co., Ltd.Inventors: Makoto Oe, Issei Chiba
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Patent number: 5126882Abstract: A plane light source unit is provided which comprises a first element having a light incident face at least at one side end thereof and a first light emitting surface extending perpendicularly to the light incident face, the first element further having a reflecting layer provided on a surface thereof opposite to the first light emitting surface, and a second element having a light incident surface which receives the light emitted by the first element and a second light emitting surface through which light is emitted in a predetermined direction, the first light emitting surface and/or the opposite surface of the first element having a directive function to cause incident light through the light incident face to emit through the first light emitting surface in a direction oblique to the direction of the light, the second element having a large number of prism units formed on the light incident surface thereof.Type: GrantFiled: November 10, 1988Date of Patent: June 30, 1992Assignee: Mitsubishi Rayon Co., Ltd.Inventors: Makoto Oe, Ithussei Chiba
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Patent number: 5089944Abstract: A box-type planar light-source device has incorporated therein a linear light source and is provided with a reflecting surface and a multi-prism sheet. The reflecting surface has such function that a major portion of a light reflected by the reflecting surface is obliquely incident upon the multi-prism sheet. The multi-prism sheet has its inner surface formed with a group of prisms so arranged as to extend in parallel relation to the light source and having such function that the light incident directly or obliquely in reflection outgoes in concentration toward a predetermined direction. Accordingly, so as to eliminate portion by the fact that the light outgoing at an angle separated from the normal direction converges at the dark portion. A dark-portion removing sheet for eliminating a dark portion at a location immediately above the light source is arranged on the side of the front face of the multi-prism sheet.Type: GrantFiled: February 7, 1991Date of Patent: February 18, 1992Assignee: Mitsubishi Rayon Co., Ltd.Inventors: Makoto Oe, Issei Chiba
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Patent number: 5034864Abstract: A box-type planar light-source device has incorporated therein a linear light source and is provided with a reflecting surface and a multi-prism sheet. The reflecting surface has such function that a major portion of a light reflected by the reflecting surface is obliquely incident upon the multi-prism sheet. The multi-prism sheet has its inner surface formed with a group of prisms so arranged as to extend in parallel relation to the light source and having such function that the light incident directly or obliquely in reflection outgoes in concentration toward a predetermined direction. Accordingly, so as to eliminate portion by the fact that the light outgoing at an angle separated from the normal direction converges at the dark portion. A dark-portion removing sheet for eliminating a dark portion at a location immediately above the light source is arranged on the side of the front face of the multi-prism sheet.Type: GrantFiled: April 23, 1990Date of Patent: July 23, 1991Assignee: Mitsubishi Rayon Co., Ltd.Inventor: Makoto Oe
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Patent number: RE38243Abstract: A plane light source unit is provided which comprises a first element having a light incident face at least at one side end thereof and a first light emitting surface extending perpendicularly to the light incident face, the first element further having a reflecting layer provided on a surface thereof opposite to the first light emitting surface, and a second element having a light incident surface which receives the light emitted by the first element and a second light emitting surface through which light is emitted in a predetermined direction, the first light emitting surface and/or the opposite surface of the first element having a directive function to cause incident light through the light incident face to emit through the first light emitting surface in a direction oblique to the direction of the light, the second element having a large number of prism units formed on the light incident surface thereof.Type: GrantFiled: July 2, 1997Date of Patent: September 2, 2003Assignee: Mitsubishi Rayon Co., Ltd.Inventors: Makoto Oe, Ithussei Chiba
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Patent number: RE35704Abstract: A plane light source unit is provided which comprises a first element having a light incident face at least at one side end thereof and a first light emitting surface extending perpendicularly to the light incident face, the first element further having a reflecting layer provided on a surface thereof opposite to the first light emitting surface, and a second element having a light incident surface which receives the light emitting by the first element and a second light emitting surface through which light is emitted in a predetermined direction, the first light emitting surface and/or the opposite surface of the first element having a directive function to cause incident light through the light incident face to emit through the first light emitting surface in a direction oblique to the direction of the light, the second element having a large number of prism units formed on the light incident surface thereof.Type: GrantFiled: June 29, 1994Date of Patent: December 30, 1997Assignee: Mitsubishi Rayon Co., Ltd.Inventors: Ithussei Chiba, Makoto Oe