Abstract:
The bandwidth selection mechanism includes a first actuator mounted on a second face of a dispersive optical element, the second face being opposite from a reflective face, the first actuator having a first end coupled to a first end block and a second end coupled to a second end block, the first actuator being operative to apply equal and opposite forces to the first end block and the second end block to bend the body of the dispersive optical element along the longitudinal axis of the body and in a first direction normal to the reflective face of the dispersive optical element. The bandwidth selection mechanism also includes a second actuator being operative to apply equal and opposite forces to bend the body along the longitudinal axis of the body, in a second direction perpendicular to the reflective face of the dispersive optical element.
Abstract:
PROBLEM TO BE SOLVED: To provide a liquid fuel property detection apparatus (sensor) for detecting a specific component within a similar hydrocarbon system material contained in a fuel. SOLUTION: The liquid fuel property sensor 1 includes: a path 3a for passing the fuel; a light emitting device 4 for emitting a light including a plurality of predetermined wavelengths toward the fuel existing in the path 3a; a light receiving device 5 for receiving the light including a plurality of the wavelengths and transmitted through the fuel; and a calculation device 101 for calculating a concentration of one of an aroma, a paraffin and an olefin as component materials of a hydrocarbon system contained in the fuel. The calculation device 101 calculates the concentration of the specific component by using a characteristic of a transmittance to the wavelength light of at least one specific component among the aroma, the paraffin and the olefin, the quantity of the light including a plurality of wavelengths emitted from the light emitting device 4, and the quantity of the light received by the light receiving device 5. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
대역폭 선택을 위한 메커니즘은 반사 광학 엘리먼트의 반사면을 따라 종축 방향으로 뻗어있는 입사 영역을 포함하는 분산 반사면을 구비한 바디를 가진 분산 광학 엘리먼트를 포함한다. 상기 바디는 또한 바디의 제 1 종축 단부에 배치된 제 1 단부 블록과 바디의 제 2 종축 단부에 배치된 제 2 단부 블록을 포함하고, 상기 제 2 종축 단부는 제 1 종축 단부에 대향하여 있다. 대역폭 선택 메커니즘은 또한 상기 반사면에 대향하여 있는 분산 광학 엘리먼트의 제 2 면 상에 장착된 제 1 액추에이터를 포함하고, 상기 제 1 액추에이터는 상기 제 1 단부 블록에 결합된 제 1 단부와 제 2 단부 블록에 결합된 제 2 단부를 구비하고, 상기 제 1 단부 블록과 상기 제 2 단부 블록에 동일하지만 반대방향인 외력을 인가하도록 동작한다.
Abstract:
A device for use with a smart phone or tablet, the device comprising: a measurement device including a light source comprising a plurality of light emitting diodes for measuring one or more physiological parameters, the measurement device configured to generate an input optical beam with one or more optical wavelengths, wherein at least a portion of the one or more optical wavelengths is a near-infrared wavelength between 500 nanometres and 2500 nanometres; the measurement device comprising one or more lenses configured to receive and to deliver a portion of the input optical beam to a sample, wherein the sample reflects at least a portion of the input optical beam delivered to the sample; the measurement device further comprising a receiver to receive at least a portion of the input optical beam reflected from the sample; the light source configured to increase a signal-to-noise ratio of the input optical beam reflected from the sample, wherein the increased signal-to-noise ratio results from an increase to the light intensity from at least one of the plurality of light emitting diodes and from modulation of at least one of the plurality of light emitting diodes; and the measurement device configured to generate an output signal; the device configured to communicate with the smart phone or tablet, the smart phone or tablet comprising a wireless receiver, a wireless transmitter, a display, a voice input module, a speaker, and a touch screen, the smart phone or tablet configured to receive and to process at least a portion of the output signal, wherein the smart phone or tablet is configured to store and display the processed output signal, wherein at least a portion of the processed output signal is configured to be transmitted over a wireless transmission link.
Abstract:
A spectral instrument including a light source configured to produce a light beam, the light beam comprising a plurality of wavelengths, and the light beam being about collimated or pseudo-collimated. The spectral instrument also includes a spectral dispersion device in optical communication with the light source. The spectral instrument also includes a screen disposed in the optical path after the spectral dispersion device. The screen comprises a material configured to be substantially opaque to at least some of the plurality of wavelengths. The screen is sized and dimensioned to at least partially block selected ones of the plurality of wavelengths. The screen is movable with respect to an axis of the screen. The spectral instrument also includes an imaging lens disposed in the optical path and disposed either after the screen or before the screen.
Abstract:
The present invention relates to a spectrometer (100) for analysing the spectrum of an upstream light beam (1) comprising an entrance slit (101) and angular dispersing means (130). According to the invention, the angular dispersing means comprise at least one polarisation-dependent diffraction grating that is suitable for, at the plurality of wavelengths (11, 12, 13), diffracting a corrected light beam (20) into diffracted light beams (31, 32, 33) in a given particular diffraction order of the polarisation-dependent diffraction grating, which is either the +1 diffraction order or the -1 diffraction order, when the corrected light beam has a preset corrected polarisation state that is circular; and the spectrometer comprises means for modifying polarisation (1100) placed between the entrance slit and the angular dispersion means, which means are suitable for modifying the polarisation state of the upstream light beam in order to generate the corrected light beam with a preset corrected polarisation state.