Title:
OPTICAL DEVICE
Document Type and Number:
WIPO Patent Application WO/2018/101281
Kind Code:
A1
Abstract:
The present invention provides an optical device having high transmittance in a wide wavelength band, and in which the incidence and emission optical axes do not change when the wavelength changes. For this purpose, an optical device according to the present invention includes a transmissive diffraction element (2) that diffracts incident light, a reflection element (3) that reflects the incident light, and a rotation mechanism (4) that supports the transmissive diffraction element (2) and the reflection element (3). The transmissive diffraction element (2) and the reflection element (3) are supported so as to be rotatable about one rotation shaft of the rotation mechanism (4). In this case, preferably provided is an optical device in which intersecting lines of a light-diffracting surface of the diffraction element (2) and a light-reflecting surface of the reflection element (3) are arranged so as to coincide with said rotation shaft.
Inventors:
FUKUOKA DAISUKE (JP)
MURO KIYOFUMI (JP)
MURO KIYOFUMI (JP)
Application Number:
PCT/JP2017/042695
Publication Date:
June 07, 2018
Filing Date:
November 28, 2017
Export Citation:
Assignee:
SPECTRA QUEST LAB INC (JP)
International Classes:
G02B27/42; G01J3/18; G02B5/18; G02B26/00; H01S5/14
Domestic Patent References:
| WO2015056049A1 | 2015-04-23 |
Foreign References:
| JP2010525604A | 2010-07-22 | |||
| US6583873B1 | 2003-06-24 |
Attorney, Agent or Firm:
TAKAHASHI Masayoshi (JP)
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