Patents by Inventor Nobuhiro Shirai
Nobuhiro Shirai 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: 11940624Abstract: An optical device and a wearable image display device are provided with a light guiding plate, a plurality of half mirrors, and an incident angle adjustment member. The optical member that causes the video light to be incident as a virtual image on a person's eye and be displayed as a display image, and has a reflection characteristic that a part of the video light is reflected on a back surface thereof. The incident angle adjustment member is an optical member configured to adjust the incident angle of the video light according to the reflection characteristic of the half mirror to form video light that does not satisfy a total reflection condition in another part of the video light, to balance the brightness of the display image.Type: GrantFiled: July 23, 2019Date of Patent: March 26, 2024Assignee: BLUE OPTECH CO., LTD.Inventors: Makoto Masuda, Nobuhiro Shirai
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Patent number: 11899210Abstract: In order to allow easy maintenance and convenient usage, the present invention is provided with an image light output unit, an image light transmitting unit, and an image light emitting unit. The image light output unit and a portion of the image light transmitting unit constitute an image source-side section. The remainder of the image light transmitting unit and the image light emitting unit constitute an image display-side section. The image source-side section and the image display-side section are respectively divided into separate unit structures. As a result, the present invention allows for easy maintenance and convenient usage.Type: GrantFiled: October 23, 2018Date of Patent: February 13, 2024Assignee: BLUE OPTECH CO., LTD.Inventors: Makoto Masuda, Nobuhiro Shirai
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Patent number: 11880042Abstract: A detachable projection device, a sealing housing thereof, and a wearable apparatus are provided. The sealing housing includes a first cover, a second cover, a first waterproof and dustproof gasket having an enclosed loop-shape, and a transparent case. The first cover and the second cover respectively have two sealing edge portions corresponding in shape to each other. The second cover is detachably fastened to the first cover, and the first waterproof and dustproof gasket is gaplessly sandwiched between and abutted against the two sealing edge portions, so that the first cover, the second cover, and the first waterproof and dustproof gasket jointly define an accommodating space. The transparent case is connected to the second cover and has an insertion slot that is in spatial communication with an optical area of the accommodating space.Type: GrantFiled: December 28, 2022Date of Patent: January 23, 2024Assignee: MEGAFORCE COMPANY LIMITEDInventors: Makoto Masuda, Han-Chiang Wu, Nobuhiro Shirai
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Publication number: 20230213774Abstract: A detachable projection device, a sealing housing thereof, and a wearable apparatus are provided. The sealing housing includes a first cover, a second cover, a first waterproof and dustproof gasket having an enclosed loop-shape, and a transparent case. The first cover and the second cover respectively have two sealing edge portions corresponding in shape to each other. The second cover is detachably fastened to the first cover, and the first waterproof and dustproof gasket is gaplessly sandwiched between and abutted against the two sealing edge portions, so that the first cover, the second cover, and the first waterproof and dustproof gasket jointly define an accommodating space. The transparent case is connected to the second cover and has an insertion slot that is in spatial communication with an optical area of the accommodating space.Type: ApplicationFiled: December 28, 2022Publication date: July 6, 2023Inventors: MAKOTO MASUDA, HAN-CHIANG WU, NOBUHIRO SHIRAI
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Patent number: 11675196Abstract: A wearable image display device eliminates the need to adjust an image focus every time the device is used. The present invention includes a mounting module and a right image display module, and a left image display module. Each of the right image display module, the left image display module includes a reflective image modulation device, a lens, a light guide plate, and a plurality of half mirrors. The lens is disposed in a state eccentric to a predetermined value with respect to the reflective image modulation device. As a result, the present invention eliminates the need to adjust the image focus every time the device is used.Type: GrantFiled: November 18, 2019Date of Patent: June 13, 2023Assignee: BLUE OPTECH CO., LTD.Inventors: Makoto Masuda, Nobuhiro Shirai
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Publication number: 20220004004Abstract: A wearable image display device eliminates the need to adjust an image focus every time the device is used. The present invention includes a mounting module and a right image display module, and a left image display module. Each of the right image display module, the left image display module includes a reflective image modulation device, a lens, a light guide plate, and a plurality of half mirrors. The lens is disposed in a state eccentric to a predetermined value with respect to the reflective image modulation device. As a result, the present invention eliminates the need to adjust the image focus every time the device is used.Type: ApplicationFiled: November 18, 2019Publication date: January 6, 2022Inventors: Makoto MASUDA, Nobuhiro SHIRAI
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Publication number: 20210318542Abstract: An optical device and a wearable image display device are provided with a light guiding plate, a plurality of half mirrors, and an incident angle adjustment member. The optical member that causes the video light to be incident as a virtual image on a person's eye and be displayed as a display image, and has a reflection characteristic that a part of the video light is reflected on a back surface thereof. The incident angle adjustment member is an optical member configured to adjust the incident angle of the video light according to the reflection characteristic of the half mirror to form video light that does not satisfy a total reflection condition in another part of the video light, to balance the brightness of the display image.Type: ApplicationFiled: July 23, 2019Publication date: October 14, 2021Inventors: Makoto MASUDA, Nobuhiro SHIRAI
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Publication number: 20200409155Abstract: In order to allow easy maintenance and convenient usage, the present invention is provided with an image light output unit, an image light transmitting unit, and an image light emitting unit. The image light output unit and a portion of the image light transmitting unit constitute an image source-side section. The remainder of the image light transmitting unit and the image light emitting unit constitute an image display-side section. The image source-side section and the image display-side section are respectively divided into separate unit structures.Type: ApplicationFiled: October 23, 2018Publication date: December 31, 2020Inventors: Makoto MASUDA, Nobuhiro SHIRAI
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Patent number: 10325188Abstract: A light scanning device includes: a first semiconductor laser 44a that emits a light beam L1; a polygonal mirror 42 that deflects the light beam L1; a reflective mirror 64a that reflects the light beam L1 deflected by the polygonal mirror 42 and causes the light beam L1 to enter a photosensitive drum 13; and a BD sensor 72 that detects the light beam L1 deflected by the polygonal mirror 42. The light scanning device scans the photosensitive drum 13 with the light beam L1 and set scanning timing of the photosensitive drum 13 using the light beam L1 based on detection timing of the light beam L1 using the BD sensor 72. The BD sensor 72 is arranged in the position farther from the polygonal mirror 42 than the last reflective mirror 64a that reflects the light beam L1 immediately before entering the photosensitive drum 13 and arranged inside a scanning angle range ? of the light beam L1 corresponding to an effective scan area of the photosensitive drum 13.Type: GrantFiled: June 12, 2018Date of Patent: June 18, 2019Assignee: SHARP KABUSHIKI KAISHAInventor: Nobuhiro Shirai
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Publication number: 20180293470Abstract: A light scanning device includes: a first semiconductor laser 44a that emits a light beam L1; a polygonal mirror 42 that deflects the light beam L1; a reflective mirror 64a that reflects the light beam L1 deflected by the polygonal mirror 42 and causes the light beam L1 to enter a photosensitive drum 13; and a BD sensor 72 that detects the light beam L1 deflected by the polygonal mirror 42. The light scanning device scans the photosensitive drum 13 with the light beam L1 and set scanning timing of the photosensitive drum 13 using the light beam L1 based on detection timing of the light beam L1 using the BD sensor 72. The BD sensor 72 is arranged in the position farther from the polygonal mirror 42 than the last reflective mirror 64a that reflects the light beam L1 immediately before entering the photosensitive drum 13 and arranged inside a scanning angle range ? of the light beam L1 corresponding to an effective scan area of the photosensitive drum 13.Type: ApplicationFiled: June 12, 2018Publication date: October 11, 2018Inventor: Nobuhiro SHIRAI
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Patent number: 10062016Abstract: A light scanning device includes: a first semiconductor laser 44a that emits a light beam L1; a polygonal mirror 42 that deflects the light beam L1; a reflective mirror 64a that reflects the light beam L1 deflected by the polygonal mirror 42 and causes the light beam L1 to enter a photosensitive drum 13; and a BD sensor 72 that detects the light beam L1 deflected by the polygonal mirror 42. The light scanning device scans the photosensitive drum 13 with the light beam L1 and set scanning timing of the photosensitive drum 13 using the light beam L1 based on detection timing of the light beam L1 using the BD sensor 72. The BD sensor 72 is arranged in the position farther from the polygonal mirror 42 than the last reflective mirror 64a that reflects the light beam L1 immediately before entering the photosensitive drum 13 and arranged inside a scanning angle range ? of the light beam L1 corresponding to an effective scan area of the photosensitive drum 13.Type: GrantFiled: December 28, 2015Date of Patent: August 28, 2018Assignee: SHARP KABUSHIKI KAISHAInventor: Nobuhiro Shirai
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Light scanning device having reduced size and parts count, and image forming apparatus with the same
Patent number: 9323050Abstract: Respective first semiconductor lasers 44a and 44b and respective second semiconductor lasers 45a and 45b are arranged on a drive substrate 46 (YZ plane) such that the emission directions of light beams L1 to L4 of the respective first semiconductor lasers 44a and 44b and the respective second semiconductor lasers 45a and 45b are perpendicular to the YZ plane. On the YZ plane, the respective first semiconductor lasers 44a and 44b and the respective second semiconductor lasers 45a and 45b are divided to two mutually different lines y1 and y2 in the lateral direction perpendicular to the rotation axis of a polygonal mirror 42, and the respective first semiconductor lasers 44a and 44b and the respective second semiconductor lasers 45a and 45b are arranged on respective different lines z1 to z4 in the vertical direction as the rotation axis direction of the polygonal mirror 42.Type: GrantFiled: October 15, 2013Date of Patent: April 26, 2016Assignee: Sharp Kabushiki KaishaInventors: Manabu Matsuo, Nobuhiro Shirai -
Publication number: 20160110634Abstract: A light scanning device includes: a first semiconductor laser 44a that emits a light beam L1; a polygonal mirror 42 that deflects the light beam L1; a reflective mirror 64a that reflects the light beam L1 deflected by the polygonal mirror 42 and causes the light beam L1 to enter a photosensitive drum 13; and a BD sensor 72 that detects the light beam L1 deflected by the polygonal mirror 42. The light scanning device scans the photosensitive drum 13 with the light beam L1 and set scanning timing of the photosensitive drum 13 using the light beam L1 based on detection timing of the light beam L1 using the BD sensor 72. The BD sensor 72 is arranged in the position farther from the polygonal mirror 42 than the last reflective mirror 64a that reflects the light beam L1 immediately before entering the photosensitive drum 13 and arranged inside a scanning angle range ? of the light beam L1 corresponding to an effective scan area of the photosensitive drum 13.Type: ApplicationFiled: December 28, 2015Publication date: April 21, 2016Inventor: Nobuhiro Shirai
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Patent number: 9250439Abstract: A light scanning device includes: a first semiconductor laser 44a that emits a light beam L1; a polygonal mirror 42 that deflects the light beam L1; a reflective mirror 64a that reflects the light beam L1 deflected by the polygonal mirror 42 and causes the light beam L1 to enter a photosensitive drum 13; and a BD sensor 72 that detects the light beam L1 deflected by the polygonal mirror 42. The light scanning device scans the photosensitive drum 13 with the light beam L1 and set scanning timing of the photosensitive drum 13 using the light beam L1 based on detection timing of the light beam L1 using the BD sensor 72. The BD sensor 72 is arranged in the position farther from the polygonal mirror 42 than the last reflective mirror 64a that reflects the light beam L1 immediately before entering the photosensitive drum 13 and arranged inside a scanning angle range ? of the light beam L1 corresponding to an effective scan area of the photosensitive drum 13.Type: GrantFiled: October 15, 2013Date of Patent: February 2, 2016Assignee: SHARP KABUSHIKI KAISHAInventor: Nobuhiro Shirai
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Patent number: 9194544Abstract: There are provided a light-emitting device, an illuminating apparatus, and a display apparatus in which, in order to apply light to an object to be illuminated with uniformity in light intensity, the quantity of light which is applied to a part of an edge of a to-be-illuminated region of the to-be-illuminated object located near a light-emitting section can be lessened. A backlight unit includes a printed substrate, a plurality of light-emitting sections each of which has a base support, an LED chip and a lens, and reflective members each of which is placed around the light-emitting section and has a first wall portion and a second wall portion.Type: GrantFiled: June 1, 2012Date of Patent: November 24, 2015Assignee: SHARP KABUSHIKI KAISHAInventors: Yasuhiro Ono, Makoto Masuda, Kenzo Ohkubo, Nobuhiro Shirai, Tetsushi Ito, Takasumi Wada
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Publication number: 20150268463Abstract: Respective first semiconductor lasers 44a and 44b and respective second semiconductor lasers 45a and 45b are arranged on a drive substrate 46 (YZ plane) such that the emission directions of light beams L1 to L4 of the respective first semiconductor lasers 44a and 44b and the respective second semiconductor lasers 45a and 45b are perpendicular to the YZ plane. On the YZ plane, the respective first semiconductor lasers 44a and 44b and the respective second semiconductor lasers 45a and 45b are divided to two mutually different lines y1 and y2 in the lateral direction perpendicular to the rotation axis of a polygonal mirror 42, and the respective first semiconductor lasers 44a and 44b and the respective second semiconductor lasers 45a and 45b are arranged on respective different lines z1 to z4 in the vertical direction as the rotation axis direction of the polygonal mirror 42.Type: ApplicationFiled: October 15, 2013Publication date: September 24, 2015Inventors: Manabu Matsuo, Nobuhiro Shirai
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Publication number: 20150248009Abstract: A light scanning device includes: a first semiconductor laser 44a that emits a light beam L1; a polygonal mirror 42 that deflects the light beam L1; a reflective mirror 64a that reflects the light beam L1 deflected by the polygonal mirror 42 and causes the light beam L1 to enter a photosensitive drum 13; and a BD sensor 72 that detects the light beam L1 deflected by the polygonal mirror 42. The light scanning device scans the photosensitive drum 13 with the light beam L1 and set scanning timing of the photosensitive drum 13 using the light beam L1 based on detection timing of the light beam L1 using the BD sensor 72. The BD sensor 72 is arranged in the position farther from the polygonal mirror 42 than the last reflective mirror 64a that reflects the light beam L1 immediately before entering the photosensitive drum 13 and arranged inside a scanning angle range ? of the light beam L1 corresponding to an effective scan area of the photosensitive drum 13.Type: ApplicationFiled: October 15, 2013Publication date: September 3, 2015Applicant: SHARP KABUSHIKI KAISHAInventor: Nobuhiro Shirai
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Patent number: 9116458Abstract: A light scanning device of the invention includes a scan deflection range of each of the light fluxes deflected by the deflecting part in a scan period of the scan object with the respective light fluxes is divided into a first deflection range where a reflection angle of each of the light fluxes with respect to the deflecting part is small and a second deflection range where the reflection angle is large. A polarization direction of each of the light fluxes is set such that a reflectivity of the reflective mirror when each of the light fluxes deflected in the second deflection range is reflected becomes larger than a reflectivity of the reflective mirror when each of the light fluxes deflected in the first deflection range is reflected.Type: GrantFiled: May 1, 2014Date of Patent: August 25, 2015Assignee: Sharp Kabushiki KaishaInventors: Nobuhiro Shirai, Takaharu Motoyama
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Publication number: 20150226400Abstract: The invention provides a light-emitting device for use in a backlight unit of a display apparatus including a display panel, which is capable of applying light to an illumination object with uniformity in brightness in the planar direction of the illumination object and can be made lower in profile, as well as an illuminating apparatus and a display apparatus including the light-emitting device. A backlight unit (1) is provided with a printed circuit board (12), a plurality of light-emitting portions (111) disposed on the printed circuit board (12) and having a base support (111b), an LED chip (111a) and a lens (112), and a reflective member (118) disposed around each light-emitting portion (111) and having a first reflecting member (1131) and a second reflecting member (1132).Type: ApplicationFiled: February 27, 2012Publication date: August 13, 2015Applicant: SHARP KABUSHIKI KAISHAInventors: Takasumi Wada, Yasuhiro Ono, Makoto Masuda, Kenzo Ohkubo, Nobuhiro Shirai
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Patent number: D983787Type: GrantFiled: July 12, 2021Date of Patent: April 18, 2023Assignee: MEGA1 COMPANY LTD.Inventors: Yi-Chi Li, Chih-Yu Yang, Nobuhiro Shirai