Title:
出射効率制御素子、投射型ディスプレイ装置、赤外線センサおよび非接触温度計
Document Type and Number:
Japanese Patent JP3580826
Kind Code:
B2
Abstract:
Mircolenses 3a and 3b are formed on a first surface of a transparent substrate, and an output efficiency control device 2 which modulates a light amount of incident light is provided on a second surface opposing the first surface. Incident light 4 is made to be incident obliquely to an optical axis of the mircolens 3a to be focused on the output efficiency control device 2. The output efficiency control device 2 modulates a light amount of incident light and outputs the light as outgoing light 5 through the mircolens 3b. Because of such a structure, the output efficiency control device 2 can be decreased in size, compared with a diameter of a beam and an aperture of a mircolens.
Inventors:
Teruhiro Shiono
Michito Ueda
Tatsuo Ito
Kazuo Yokoyama
Michito Ueda
Tatsuo Ito
Kazuo Yokoyama
Application Number:
JP51722297A
Publication Date:
October 27, 2004
Filing Date:
October 31, 1996
Export Citation:
Assignee:
Matsushita Electric Industrial Co., Ltd
International Classes:
G01J1/00; G02B3/00; G02B26/08; G02F1/01; (IPC1-7): G02B26/00; G01J1/00; G01J1/02; G01J1/04; G01J1/06; G01J1/08; G02B26/02; G02B26/04; G02B26/06; G02B26/08
Attorney, Agent or Firm:
Hidesaku Yamamoto