Patents by Inventor Takahiro Totani
Takahiro Totani 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: 11570394Abstract: An image display device is a self-luminous type device including a light emitting portion, and a casing portion of a display device unit has a heat dissipating structure portion through which a part of the image display device is exposed for heat dissipation. In manufacturing the display device unit, when performing simple and reliable assembly while securing a high heat dissipation characteristic, for example, by using characteristics of a silicon substrate, high accurate positioning is performed in a display device positioning portion.Type: GrantFiled: March 19, 2021Date of Patent: January 31, 2023Assignee: SEIKO EPSON CORPORATIONInventors: Takahiro Totani, Masayuki Takagi, Yoshitaka Hama
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Patent number: 11163162Abstract: A see-through display apparatus includes an image display apparatus configured to emit a video light, a light guide apparatus configured to guide the video light and to output the video light in a first direction, and a light control shade disposed opposite to the first direction with respect to the light guide apparatus. The light control shade is configured to control a transmittance of an outside light based on a luminance of the outside light. A first response time of the light control shade when the outside light changes from a lower luminance to a higher luminance is slower than a second response time of the light control shade when the outside light changes from the higher luminance to the lower luminance.Type: GrantFiled: November 4, 2019Date of Patent: November 2, 2021Assignee: SEIKO EPSON CORPORATIONInventors: Masayuki Takagi, Takahiro Totani, Takashi Takeda, Akira Komatsu, Toshiaki Miyao
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Publication number: 20210227171Abstract: An image display device is a self-luminous type device including a light emitting portion, and a casing portion of a display device unit has a heat dissipating structure portion through which a part of the image display device is exposed for heat dissipation. In manufacturing the display device unit, when performing simple and reliable assembly while securing a high heat dissipation characteristic, for example, by using characteristics of a silicon substrate, high accurate positioning is performed in a display device positioning portion.Type: ApplicationFiled: March 19, 2021Publication date: July 22, 2021Applicant: SEIKO EPSON CORPORATIONInventors: Takahiro TOTANI, Masayuki TAKAGI, Yoshitaka HAMA
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Patent number: 10986303Abstract: An image display device is a self-luminous type device including a light emitting portion, and a casing portion of a display device unit has a heat dissipating structure portion through which a part of the image display device is exposed for heat dissipation. In manufacturing the display device unit, when performing simple and reliable assembly while securing a high heat dissipation characteristic, for example, by using characteristics of a silicon substrate, high accurate positioning is performed in a display device positioning portion.Type: GrantFiled: April 21, 2020Date of Patent: April 20, 2021Assignee: SEIKO EPSON CORPORATIONInventors: Takahiro Totani, Masayuki Takagi, Yoshitaka Hama
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Patent number: 10802289Abstract: A virtual image display device has a light guide device in which the half mirror layer (the semi-transmissive reflecting film) of the light guide member is formed on the partial area of the first junction surface, and the second junction surface of the light transmitting member is bonded to the first junction surface in at least the exceptional area. Therefore, it is possible to increase the bonding strength of the first junction surface and the second junction surface, namely the strength of the light guide device composed of the light guide member and the light transmitting member combined with each other even in the case in which the attachment force of the half mirror layer (the semi-transmissive reflecting film) with respect to the first junction surface is not sufficiently strong.Type: GrantFiled: April 18, 2018Date of Patent: October 13, 2020Assignee: SEIKO EPSON CORPORATIONInventors: Masayuki Takagi, Takahiro Totani, Toshiaki Miyao, Akira Komatsu, Takashi Takeda
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Publication number: 20200252575Abstract: An image display device is a self-luminous type device including a light emitting portion, and a casing portion of a display device unit has a heat dissipating structure portion through which a part of the image display device is exposed for heat dissipation. In manufacturing the display device unit, when performing simple and reliable assembly while securing a high heat dissipation characteristic, for example, by using characteristics of a silicon substrate, high accurate positioning is performed in a display device positioning portion.Type: ApplicationFiled: April 21, 2020Publication date: August 6, 2020Applicant: SEIKO EPSON CORPORATIONInventors: Takahiro TOTANI, Masayuki TAKAGI, Yoshitaka HAMA
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Patent number: 10735701Abstract: In a projection system, a nonaxisymmetric aspheric surface is used as a surface that is located in a position where in a pencil of light of video image light that exits from each of two points in different corner regions in an image plane that is a light exiting plane of an image display apparatus, light components that should reach a viewer's eyes do not intersect one another, whereby the size of an optical system can be further reduced and the size of an overall apparatus can therefore be reduced with a variety of types of optical precision, such as the resolution and angle of view, maintained.Type: GrantFiled: April 27, 2018Date of Patent: August 4, 2020Assignee: SEIKO EPSON CORPORATIONInventors: Masayuki Takagi, Takahiro Totani, Takashi Takeda, Akira Komatsu, Toshiaki Miyao
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Patent number: 10674108Abstract: An image display device is a self-luminous type device including a light emitting portion, and a casing portion of a display device unit has a heat dissipating structure portion through which a part of the image display device is exposed for heat dissipation. In manufacturing the display device unit, when performing simple and reliable assembly while securing a high heat dissipation characteristic, for example, by using characteristics of a silicon substrate, high accurate positioning is performed in a display device positioning portion.Type: GrantFiled: March 12, 2019Date of Patent: June 2, 2020Assignee: SEIKO EPSON CORPORATIONInventors: Takahiro Totani, Masayuki Takagi, Yoshitaka Hama
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Patent number: 10645374Abstract: First and second display devices have first and second common display areas in which image display with common content to left and right eyes is performed. At least one of the first and second display devices has an extended display area. A display control unit generates a signal including common image information for the first and second common display areas and extension image information for the extended display area.Type: GrantFiled: February 15, 2017Date of Patent: May 5, 2020Assignee: SEIKO EPSON CORPORATIONInventors: Takashi Takeda, Masayuki Takagi, Toshiaki Miyao, Akira Komatsu, Takahiro Totani
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Publication number: 20200064638Abstract: A see-through display apparatus includes an image display apparatus configured to emit a video light, a light guide apparatus configured to guide the video light and to output the video light in a first direction, and a light control shade disposed opposite to the first direction with respect to the light guide apparatus. The light control shade is configured to control a transmittance of an outside light based on a luminance of the outside light. A first response time of the light control shade when the outside light changes from a lower luminance to a higher luminance is slower than a second response time of the light control shade when the outside light changes from the higher luminance to the lower luminance.Type: ApplicationFiled: November 4, 2019Publication date: February 27, 2020Applicant: SEIKO EPSON CORPORATIONInventors: Masayuki TAKAGI, Takahiro TOTANI, Takashi TAKEDA, Akira KOMATSU, Toshiaki MIYAO
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Patent number: 10502961Abstract: In a frame part, a center portion having a thick structure is provided between a first optical member as a first light guide unit and a second optical member as a second light guide unit to connect to both and fixes relative positions of the first optical member and the second optical member by the center portion, and thereby, reduction in weight and size of the frame part is realized.Type: GrantFiled: August 9, 2018Date of Patent: December 10, 2019Assignee: SEIKO EPSON CORPORATIONInventors: Toshiaki Miyao, Takahiro Totani, Masayuki Takagi, Takashi Takeda, Akira Komatsu, Kazuya Kamakura
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Patent number: 10481398Abstract: In an image generation unit, a light emitting part is formed using a self-emitting OLED device, and thereby, high-contrast images can be formed and the life of the light emitting part and the life of the virtual image display apparatus are extended. Even when the light emitted in the light emitting part has deviation in color balance, a half-mirror layer that has light transmissivity and realizes see-through vision is a reflection film having wavelength dependence, and thereby, a uniform color balance of image lights is achieved and images in good conditions are visually recognized.Type: GrantFiled: March 24, 2016Date of Patent: November 19, 2019Assignee: SEIKO EPSON CORPORATIONInventors: Toshiaki Miyao, Takahiro Totani, Masayuki Takagi, Takashi Takeda, Akira Komatsu, Takeshi Koshihara, Kunihiko Yano
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Patent number: 10394028Abstract: An apparatus has a see-through configuration that guides picture lights by a light guide device and superimposes lights from the outside world and the picture lights for visual recognition. The light guide device has a light guide prevention structure (light transmission prevention structure) provided in a narrow width shape part having a narrower shape than a surrounding part, and thereby, prevents unintended reflection or the like of lights due to the lights from the outside world and suppresses light guide of the lights toward an observer side.Type: GrantFiled: December 5, 2016Date of Patent: August 27, 2019Assignee: SEIKO EPSON CORPORATIONInventors: Masayuki Takagi, Takahiro Totani, Toshiaki Miyao, Takashi Takeda, Akira Komatsu
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Patent number: 10397560Abstract: In first and second display devices that are provided in a pair on the left and right sides, image light and external light are superimposed on each other and viewed. In this case, a parallax of an angle (the value of angle) is set by a frame unit functioning as a parallax setting unit tilting principal rays of left and right image light inwardly, and the angle of convergence of an observer is in an appropriate state in the case of viewing the image light.Type: GrantFiled: April 7, 2016Date of Patent: August 27, 2019Assignee: SEIKO EPSON CORPORATIONInventors: Toshiaki Miyao, Masayuki Takagi, Akira Komatsu, Takahiro Totani, Takashi Takeda
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Publication number: 20190215478Abstract: An image display device is a self-luminous type device including a light emitting portion, and a casing portion of a display device unit has a heat dissipating structure portion through which a part of the image display device is exposed for heat dissipation. In manufacturing the display device unit, when performing simple and reliable assembly while securing a high heat dissipation characteristic, for example, by using characteristics of a silicon substrate, high accurate positioning is performed in a display device positioning portion.Type: ApplicationFiled: March 12, 2019Publication date: July 11, 2019Applicant: SEIKO EPSON CORPORATIONInventors: Takahiro TOTANI, Masayuki TAKAGI, Yoshitaka HAMA
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Patent number: 10330934Abstract: An image relay optical system is provided with an optical coupling member before incidence of image light on a light guide member. Among a first light incident surface, a coupling member reflecting surface, and a first light emitting surface provided in the optical coupling member, the coupling member reflecting surface and the first light emitting surface are curved surfaces. Therefore, a large bright virtual image with reduced aberration can be displayed.Type: GrantFiled: December 31, 2015Date of Patent: June 25, 2019Assignee: SEIKO EPSON CORPORATIONInventors: Takashi Takeda, Takahiro Totani, Akira Komatsu, Masayuki Takagi, Toshiaki Miyao
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Patent number: 10310270Abstract: A light guide member includes three surfaces of a second surface, a fourth surface, and a fifth surface as two or more non-axisymmetric curved surfaces, and a projection lens includes a lens surface as a non-axisymmetric aspheric surface. With this, on the light guide member side, even when there is a shape constraint that the first surface or the third surface which is a surface contributing to light guide is a flat surface, and correction of asymmetric aberration is limited, it becomes possible to perform sufficient aberration correction as the whole of an optical system including the projection lens. Therefore, the virtual image display apparatus can have a wide viewing angle and high performance, and can be made small and lightweight.Type: GrantFiled: October 30, 2017Date of Patent: June 4, 2019Assignee: SEIKO EPSON CORPORATIONInventors: Akira Komatsu, Takahiro Totani, Masayuki Takagi, Takashi Takeda, Toshiaki Miyao
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Publication number: 20190137763Abstract: There are provided a light guide device that does not cause non-uniformity in image light and external light and does not cause ghosts, and a virtual image display apparatus provided with the light guide device. The light guide device includes a parallel light guide, an incident section, and an emission section. Here, the light guide device is set such that image light rays are reflected without reflecting from a boundary surface between the parallel light guide and the reflection unit and head for an observer. Thus, the image light rays only pass through half mirrors, which are positioned in positions where the image light rays are emitted from the reflection unit of the emission section or are positioned therearound. Accordingly, it is possible to prevent luminance non-uniformity or light reduction by reducing the number of times of the image light rays to be observed pass through the half mirrors.Type: ApplicationFiled: September 18, 2018Publication date: May 9, 2019Applicant: SEIKO EPSON CORPORATIONInventors: Akira KOMATSU, Masayuki TAKAGI, Toshiaki MIYAO, Takahiro TOTANI, Takashi TAKEDA
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Patent number: 10281963Abstract: An image display device includes a display unit that displays an image so as to be visually recognized by an observer, a holding member that holds the display unit and has at least a portion thereof exposed to the outside, and a heat conduction member, having a sheet shape, which is connected to the holding member. The display unit includes an image forming device that forms the image. The heat conduction member comes into contact with the image forming device so as to be capable of heat conduction, and transmits heat of the image forming device to the holding member.Type: GrantFiled: December 1, 2015Date of Patent: May 7, 2019Assignee: SEIKO EPSON CORPORATIONInventors: Masayuki Takagi, Toshiaki Miyao, Takeshi Fujishiro, Takahiro Totani, Takashi Takeda, Akira Komatsu, Masahide Takano
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Patent number: 10271003Abstract: An image display device is a self-luminous type device including a light emitting portion, and a casing portion of a display device unit has a heat dissipating structure portion through which a part of the image display device is exposed for heat dissipation. In manufacturing the display device unit, when performing simple and reliable assembly while securing a high heat dissipation characteristic, for example, by using characteristics of a silicon substrate, high accurate positioning is performed in a display device positioning portion.Type: GrantFiled: January 30, 2017Date of Patent: April 23, 2019Assignee: SEIKO EPSON CORPORATIONInventors: Takahiro Totani, Masayuki Takagi, Yoshitaka Hama