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公开(公告)号：US11768371B2
公开(公告)日：2023-09-26
申请号：US17613261
申请日：2020-05-11
Inventor： Hiroki Hara , Yosuke Asai , Keiji Sugiyama , Yuji Takase
CPC classification number: G02B27/0101 , B60K35/00 , H04N9/3141 , G02B2027/0118
Abstract: A projection device includes: a plurality of light sources arranged in a first direction; a spatial modulation element that modulates incident light into image information and emits the image information; a lens that changes an optical path of light emitted from each of the plurality of light sources such that the light emitted from each light source reaches substantially the same region of an incident surface of the spatial modulation element; and a first reflective optical member that deflects the light emitted from the lens toward the spatial modulation element, the first reflective optical member having a shape that reflects light emitted from the lens so as to be incident on an arbitrary point on the incident surface of the spatial modulation element at a predetermined reference incident angle.
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公开(公告)号：US11054640B2
公开(公告)日：2021-07-06
申请号：US16284573
申请日：2019-02-25
Inventor： Yuji Takase , Kouzou Yuuki
Abstract: The displaying system includes a display unit, a projection unit, and a light-transmissive member. The display unit is configured to display an image. The projection unit is configured to reflect rays of light constituting the image toward a reflective member to project the image onto the reflective member to form a virtual image in a target space. The light-transmissive member has a plate shape. The light-transmissive member is located between the reflective member and the projection unit. The light-transmissive member intersects with an optical axis of light traveling from the projection unit toward the reflective member without forming right angles. The light-transmissive member has in-plane retardation and thickness direction retardation larger than the in-plane retardation.
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