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22. 发明公开

EP3779592A1 PROJECTOR 审中-公开
公开(公告)号：EP3779592A1
公开(公告)日：2021-02-17
申请号：EP19774835.3
申请日：2019-02-28
申请人： MAXELL, LTD.
发明人： NAKAMORI, Hiroshi , SHIKITA, Kazuo , SHIRAISHI, Akihiro , KINNO, Chiaki , SHIMIZU, Takuya , PARK, Minjoo
IPC分类号： G03B21/14 , F21S2/00 , F21V5/04 , F21V7/28 , F21V7/30 , F21V9/08 , F21V9/40 , F21V9/45 , F21V14/04 , G03B21/00 , H04N9/31 , F21Y115/30
摘要： Provided is a projector that more appropriately generates white light from a laser light source and uses the white light for image display.
A white light generator of the projector has a rectangular light generating lens that generates excitation light of a rectangular shape from the blue light of a blue laser and a phosphor wheel that is coated with a phosphor that is irradiated with the excitation light to emit yellow light, wherein an arrangement is such that, when, in the phosphor wheel, a horizontal direction is set to an x-axis, a vertical direction is set to an y-axis, and an angle θ is defined such that a counterclockwise direction is positive with respect to the x-axis, a length in the vertical direction of a rectangular shape of an irradiation region is represented by v, and a length in the horizontal direction is represented by h, h v, and a center of the rectangular shape is within any one of a region having an angle of 0° or more and 45° or less, a region having an angle of 135° or more and 225° or less, and a region having an angle of 315° or more and 360° or less, or wherein an arrangement is such that h = v, and a center of the rectangular shape is within any one of a region having an angle of a region having an angle of 22.5° or more and 67.5° or less, a region having an angle of 112.5° or more and 157.5° or less, a region having an angle of 202.5° or more and 247.5° or less, and a region having an angle of 292.5° or more and 337.5° or less.

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