Optical measuring device and safety device used therein

• US 10,161,872 B2
• Filed: 04/14/2016
• Issued: 12/25/2018
• Est. Priority Date: 04/14/2016
• Status: Active Grant

• Current Assignee: Shimadzu Corporation
• Original Assignee: Shimadzu Corporation
• Inventors: Sasayama, Tomoki
• Primary Examiner(s): Amara, Mohamed K
• Application Number:
  US15/098,598
• Publication Number:
  US 20170299515A1
• Time in Patent Office: 985 Days
• CPC Class Codes: G01N 2021/6463 Optics
• CPC Class Codes: G01N 21/645 Specially adapted constructive features of fluorimeters
• CPC Class Codes: G01N 2201/022 Casings
• CPC Class Codes: G01N 2201/025 Mechanical control of operations
• CPC Class Codes: G02B 26/023 comprising movable attenuating elements, e.g. neutral density filters
• CPC Class Codes: G02B 5/208 for use with infrared or ultraviolet radiation, e.g. for separating visible light from infrared and/or ultraviolet radiation

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.

Claims

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.