Display apparatus, display method, goggle-type head-mounted display, and vehicle
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
G02B-027/14
G02B-013/14
G09G-005/00
A61B-003/14
출원번호
US-0107076
(2011-05-13)
등록번호
US-8228608
(2012-07-24)
우선권정보
JP-2008-060654 (2008-03-11)
발명자
/ 주소
Yamamoto, Kakuya
출원인 / 주소
Panasonic Corporation
대리인 / 주소
Wenderoth, Lind & Ponack, L.L.P.
인용정보
피인용 횟수 :
3인용 특허 :
8
초록▼
A display apparatus includes a light source which emits a beam including visible light forming an image and infrared rays, and a transmissive deflection unit including a first surface facing the eyes of a user and a second surface which is a rear surface of the first surface. The transmissive deflec
A display apparatus includes a light source which emits a beam including visible light forming an image and infrared rays, and a transmissive deflection unit including a first surface facing the eyes of a user and a second surface which is a rear surface of the first surface. The transmissive deflection unit has transmissive characteristics for transmitting the visible light from the second surface side to the first surface side, deflection characteristics for deflecting, toward the eyes of the user, the visible light projected from the light source to the first surface side, and infrared absorption characteristics for absorbing the infrared rays projected from the light source to the first surface side.
대표청구항▼
1. A display apparatus which displays an image on a retina of a user, said display apparatus comprising: a light source which emits a beam including a visible light forming the image and an infrared ray;a transmissive deflection unit which includes a first surface facing an eye of the user, and a se
1. A display apparatus which displays an image on a retina of a user, said display apparatus comprising: a light source which emits a beam including a visible light forming the image and an infrared ray;a transmissive deflection unit which includes a first surface facing an eye of the user, and a second surface that is a rear surface of said first surface; anda light detecting unit configured to detect an intensity of reflected light of the beam emitted by said light source which is reflected by said transmissive deflection unit,wherein said transmissive deflection unit includes: a transmissive characteristic for transmitting the visible light from a second surface side to a first surface side;a deflection characteristic for deflecting, toward the eye of the user, the visible light projected from said light source to the first surface side; andan infrared absorption characteristic for absorbing the infrared ray projected from said light source to the first surface side,wherein said light source emits the infrared ray onto a fogging area of said transmissive deflection unit with a first output intensity, and emits the infrared ray onto an area of said transmissive deflection unit other than the fogging area with a second output intensity, the first output intensity being higher than the second output intensity, andwherein the fogging area on said transmissive deflection unit is determined based on the intensity of the reflected light detected by said light detecting unit. 2. The display apparatus according to claim 1, further comprising: a scan unit configured to perform two-dimensional scanning on said first surface of said transmissive deflection unit, using the beam emitted from said light source; anda control unit configured to cause said light source to change an output intensity of the infrared ray according to a position on said first surface onto which the beam is projected for scanning by said scan unit. 3. The display apparatus according to claim 2, wherein said scan unit and said transmissive deflection unit are positioned such that the infrared ray specularly reflected by said transmissive deflection unit is projected onto a position that is different from a position of the eye of the user. 4. The display apparatus according to claim 2, further comprising a line-of-sight detecting unit configured to detect a line-of-sight of the user based on a reflected light, on the eye of the user, of the visible beam deflected by said transmissive deflection unit,wherein said control unit is configured to cause said light source to increase the output intensity of the infrared ray as a position onto which the beam is projected for scanning by said scan unit becomes closer to a position where the line-of-sight of the user detected by said line-of-sight detecting unit and said first surface intersect with each other. 5. The display apparatus according to claim 1, wherein said transmissive deflection unit includes:an infrared absorption layer which is disposed on the first surface side, transmits the visible light, and absorbs the infrared ray emitted from said light source;a visible light deflection layer which is disposed on the second surface side, transmits the visible light traveling from the second surface side to the first surface side, and deflects, toward the eye of the user, the visible light emitted from said light source; anda heat insulation layer which is disposed between said infrared absorption layer and said visible light deflection layer, transmits the visible light, and blocks heat propagation between said infrared absorption layer and said visible light deflection layer. 6. The display apparatus according to claim 5, wherein said infrared absorption layer has a different infrared absorptance according to a position on said first surface. 7. The display apparatus according to claim 6, wherein said infrared absorption layer has a higher infrared absorptance as a position on said first surface becomes closer to the central part of said first surface. 8. The display apparatus according to claim 1, further comprising: an electric power supply mode switching unit configured to switch between a first electric power supply mode in which an electric power from an external power source is supplied to said light source, and a second electric power supply mode in which an electric power from a battery included in said display apparatus is supplied to said light source; anda control unit configured to cause said light source to decrease the output intensity of the infrared ray in response to the switching into the second electric power supply mode by said electric power supply mode switching unit. 9. The display apparatus according to claim 1, further comprising a control unit configured to make a wavefront shape of the infrared ray emitted from said light source different from a wavefront shape of the visible light, so that a focal position of the infrared ray that is deflected by said transmissive deflection unit toward the eye of the user is a position that is out of the eye of the user. 10. A goggle-type head-mounted display comprising: the display apparatus according to claim 1;a pair of lenses provided in front of the eyes of the user and each having said transmissive deflection unit on a side facing the eyes of the user; anda pair of temples each having one end connected to corresponding one of said pair of lenses and the other end fixed to a lateral side of a head of the user. 11. A vehicle comprising: the display apparatus according to claim 1; anda windshield having said transmissive deflection unit. 12. The display apparatus according to claim 1, wherein the fogging area on said transmissive deflection unit corresponds to an area on said transmissive deflection unit in which the intensity of the reflected light detected by said light detecting unit is equal to or less than a predetermined threshold. 13. A display method for displaying an image on a retina of a user via a transmissive deflection unit, wherein the transmissive deflection unit includes: a first surface facing an eye of the user, and a second surface that is a rear surface of the first surface;a transmissive characteristic for transmitting a visible light from a second surface side to a first surface side;a deflection characteristic for deflecting, toward the eye of the user, the visible light projected from a light source to the first surface side; andan infrared absorption characteristic for absorbing an infrared ray projected from the light source to the first surface side, said display method comprising:emitting a beam including the visible light forming the image and the infrared ray;performing two-dimensional scanning on the first surface of the transmissive deflection unit, using the beam emitted in the emitting; anddetecting an intensity of reflected light of the beam emitted by the light source which is reflected by the transmissive deflection unit,wherein in said emitting, the infrared ray is emitted onto a fogging area of the transmissive deflection unit with a first output intensity, and the infrared ray is emitted onto an area of the transmissive deflection unit other than the fogging area with a second output intensity, the first output intensity being higher than the second output intensity, andwherein the fogging area on the transmissive deflection unit is determined based on the intensity of the reflected light detected in said detecting. 14. The display method according to claim 13, wherein the fogging area on the transmissive deflection unit corresponds to an area on the transmissive deflection unit in which the intensity of the reflected light detected in said detecting is equal to or less than a predetermined threshold.
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이 특허에 인용된 특허 (8)
Ashizaki Koji (Tokyo JPX) Yamamoto Masanobu (Kanagawa JPX) Miyaoka Senri (Kanagawa JPX) Tamada Sakuya (Tokyo JPX), Apparatus for direct display of an image on the retina of the eye using a scanning laser.
Swanson Douglas R. ; Nestell David E. ; Lynam Niall R., Vehicle assembly line-side heat activation of a "ready-to-install" window fixing adhesive for attachment of a vehicle window to a vehicle.
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