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Patent Searching and Data


Title:
PROJECTOR
Document Type and Number:
WIPO Patent Application WO/2019/187948
Kind Code:
A1
Abstract:
Provided is a projector that suitably generates a white beam from a laser beam source and uses the white beam to display an image. A white beam generation unit of the projector has: a rectangular beam generation lens that generates, from a blue beam of blue laser, an excitation beam having a rectangular shape; and a fluorescent substance wheel which is irradiated with the excitation beam and on which a fluorescent substance that emits a yellow beam is applied. In the fluorescent substance wheel, an x-axis, a y-axis, and an angle θ in the counterclockwise direction from the x-axis are respectively defined as the horizontal direction, the vertical direction, and a positive value, and v represents the vertical length, and h represents the horizontal length of the rectangular-shaped region irradiated with the excitation beam. Among regions on which the fluorescent substances are applied, the center of the rectangular shape is disposed to be present: in a region having any angular range between 45° and 135° or between 225° and 315° under the condition hv; or in a region having any angular range between 22.5° and 67.5°, between 112.5° and 157.5°, between 202.5° and 247.5°, or between 292.5° and 337.5° under the condition h=v.

Inventors:
NAKAMORI Hiroshi (1, Koizumi, Oyamazaki, Oyamazaki-cho Otokuni-gu, Kyoto 25, 〒6188525, JP)
SHIKITA Kazuo (1, Koizumi, Oyamazaki, Oyamazaki-cho Otokuni-gu, Kyoto 25, 〒6188525, JP)
SHIRAISHI Akihiro (1, Koizumi, Oyamazaki, Oyamazaki-cho Otokuni-gu, Kyoto 25, 〒6188525, JP)
KINNO Chiaki (1, Koizumi, Oyamazaki, Oyamazaki-cho Otokuni-gu, Kyoto 25, 〒6188525, JP)
SHIMIZU Takuya (1, Koizumi, Oyamazaki, Oyamazaki-cho Otokuni-gu, Kyoto 25, 〒6188525, JP)
PARK Minjoo (1, Koizumi, Oyamazaki, Oyamazaki-cho Otokuni-gu, Kyoto 25, 〒6188525, JP)
Application Number:
JP2019/007747
Publication Date:
October 03, 2019
Filing Date:
February 28, 2019
Export Citation:
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Assignee:
MAXELL, LTD. (1 Koizumi, Oyamazaki Oyamazaki-cho Otokuni-gu, Kyoto 25, 〒6188525, JP)
International Classes:
G03B21/14; F21S2/00; F21V5/04; F21V7/28; F21V7/30; F21V9/08; F21V9/40; F21V9/45; F21V14/04; G03B21/00; H04N9/31; F21Y115/30
Foreign References:
JP2017142451A2017-08-17
JP2017026847A2017-02-02
JP2016090850A2016-05-23
JP2014021223A2014-02-03
US20160165194A12016-06-09
Attorney, Agent or Firm:
SEIRYO I.P.C. (24-2, Hatchobori 2-chome Chuo-k, Tokyo 32, 〒1040032, JP)
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