Optical measuring device and safety device used therein

Patent metadata

Field	Value
Publication number	US-10161872-B2
Application number	US-201615098598-A
Country	US
Kind code	B2
Filing date	Apr 14, 2016
Priority date	Apr 14, 2016
Publication date	Dec 25, 2018
Grant date	Dec 25, 2018

Abstract

An optical measuring device including a sample placement portion for a measurement sample to be placed therein; a light source portion for emitting a measurement beam toward the measurement sample that is placed in the sample placement portion; and a detector for detecting sample information from a measurement sample that is disposed in the sample placement portion; a cover portion that is able to open and close, for accessing the interior of the sample placement portion, is formed on the sample placement portion; an optical element member for not transmitting light of at least a prescribed wavelength band within the measurement beam; and a driving mechanism that is linked mechanically with the opening and closing of the cover portion to move the optical element member.

First claim

What is claimed:

1. An optical measuring device comprising:
a sample placement portion comprising a base plate and a cover portion that can be opened and closed in order to access an interior of the sample placement portion and is capable of covering an upper surface of the base plate on which a measurement sample is placed, the base plate having an aperture portion that is occluded by the measurement sample;
a light source portion which emits a measurement beam toward the measurement sample that is placed in the sample placement portion;
a detector which detects sample information from the measurement sample placed in the sample placement portion;
a shutter which does not transmit light of at least a prescribed wavelength band within the measurement beam; and
a driving mechanism for linking mechanically to an opening and closing of the cover portion, to move the shutter,
wherein: the driving mechanism places the shutter into a light path from the light source portion to the sample placement portion so as to occlude the aperture portion when the cover portion is opened and places the shutter outside of the light path from the light source portion to the sample placement portion so as to not occlude the aperture portion when the cover portion is closed,
wherein the cover portion can be opened so as to access the measurement sample.

2. The optical measuring device as set forth in claim 1 , wherein:
the shutter is configured to revolve with one end portion thereof as an axis of revolution;
the driving mechanism comprises a lever and a wire that connects one end portion of the lever and the shutter; and
the other end portion of the lever is pressed by the cover portion when the cover portion is closed, and not pressed by the cover portion when the cover portion is opened.

3. A safety device used in an optical measuring device, comprising:
a sample placement portion comprising a base plate and a cover portion that can be opened and closed in order to access an interior of the sample placement portion and is capable of covering an upper surface of the base plate on which a measurement sample is placed,
the base plate having an aperture portion that is occluded by the measurement sample;
a light source portion which emits a measurement beam toward the measurement sample that is placed in the sample placement portion;
a detector which detects sample information from the measurement sample placed in the sample placement portion;
a shutter which does not transmit light of at least a prescribed wavelength band within the measurement beam; and
a driving mechanism for linking mechanically to an opening and closing of the cover portion, to move the shutter,
wherein: the driving mechanism places the shutter into a light path from
the light source portion to the sample placement portion so as to occlude the aperture portion when the cover portion is opened and places the shutter outside of the light path from the light source portion to the sample placement portion so as to not occlude the aperture portion when the cover portion is closed,
wherein the cover portion can be opened so as to access the measurement.

Assignees

• Shimadzu Corp

Inventors

• Sasayama Tomoki

Classifications

• G01N2021/6463

  Optics · CPC title

• G02B5/208

  for use with infrared or ultraviolet radiation, e.g. for separating visible light from infrared and/or ultraviolet radiation · CPC title

• G01N21/645 Primary

  Specially adapted constructive features of fluorimeters · CPC title

• G01N2201/022

  Casings · CPC title

• G01N2201/025

  Mechanical control of operations · CPC title