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Patent Searching and Data


Title:
SPECTROSCOPE, AND MICROSCOPE PROVIDED WITH SAME
Document Type and Number:
WIPO Patent Application WO/2018/070469
Kind Code:
A1
Abstract:
The objective of the present invention is to provide a spectroscope with which it is possible to improve spectral resolution over a wide wavelength range while suppressing a deterioration in light reception efficiency and suppressing the generation of stray light. To this end, this spectroscope is provided with: a refracting lens 3 equipped with a first surface 31 upon which light emitted from a light source is incident, and a second surface 32 in the shape of a convex curved surface from which the light that has entered from the first surface 31 is emitted; a reflection-type diffraction grating 4 in the shape of a concave curved surface which reflects and diffracts incident light that is the light emitted from the second surface 32 of the refracting lens 3; a detector 6 provided in a position in which light that has been reflected by the reflection-type diffraction grating 4, has entered from the second surface 32 of the refracting lens 3 and has been emitted from the first surface 31 forms an image; and a compensating element 5 provided between the first surface 31 of the refracting lens 3 and the detector 6.

Inventors:
SATO SEICHI (JP)
Application Number:
PCT/JP2017/036966
Publication Date:
April 19, 2018
Filing Date:
October 12, 2017
Export Citation:
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Assignee:
HORIBA LTD (JP)
International Classes:
G01J3/18; G01J3/02; G01J3/36; G02B21/00
Domestic Patent References:
WO2012099987A22012-07-26
WO1990002928A11990-03-22
Foreign References:
JP2012507698A2012-03-29
JPH10293062A1998-11-04
US20090237657A12009-09-24
JP2012506562A2012-03-15
Other References:
LOBB, D. R.: "Theory of concentric designs for grating spectrometers", APPLIED OPTICS, vol. 33, no. 13, 1 May 1994 (1994-05-01), pages 2648 - 2658, XP000442289, DOI: doi:10.1364/AO.33.002648
Attorney, Agent or Firm:
NISHIMURA, Ryuhei (JP)
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