Title:
光源ユニット及びプロジェクタ
Document Type and Number:
Japanese Patent JP5666865
Kind Code:
B2
Abstract:
A light source unit includes an excitation light source and a luminescent wheel on which luminescent light emitting areas including, on a reflecting surface, red and green luminescent materials which respectively emit light of red and green wavelength band, when receiving excitation light, and a diffuse transmission area which diffuses and transmits excitation light, are aligned end to end in a circumferential direction. An excitation light incident surface of a luminescent material layer of the luminescent wheel has a surface with a plurality of projecting bodies. Regular quadrangular pyramids are arranged thereon in a matrix with outer boundaries of bottom portions of adjacent regular quadrangular pyramids contacting each other. The pyramids rise at a rising angle of at least 30°, and a length of one side of an outer boundary of the bottom portion of the pyramid is between 10 and 100 μm.
Inventors:
小椋 直嗣
中村 英貴
宮崎 健
馬峰 治
増田 弘樹
川上 康之
中村 英貴
宮崎 健
馬峰 治
増田 弘樹
川上 康之
Application Number:
JP2010213740A
Publication Date:
February 12, 2015
Filing Date:
September 24, 2010
Export Citation:
Assignee:
カシオ計算機株式会社
スタンレー電気株式会社
スタンレー電気株式会社
International Classes:
G03B21/14; F21S2/00; F21V9/40; G03B21/00
Attorney, Agent or Firm:
Kiyoshi Mizuno
Hitoshi Kitamura
Tatsuo Itami
Hitoshi Kitamura
Tatsuo Itami