Abstract:
PROBLEM TO BE SOLVED: To provide a weak luminescence detecting device, in luminescence measurement, capable of: preventing dark current values or dark current pulse numbers from reducing and from fluctuating relative to temperatures; capturing luminescence signals at a high solid angle; and detecting with high sensitivity luminescence having no directivity such as chemiluminescence or bioluminescence.SOLUTION: A luminescence measuring apparatus comprises: a plate-like member for holding a holder for a container storing a sample; a luminescence detection part for detecting luminescence in the sample; a temperature control part for controlling temperature of the luminescence detection part; and an air blowing part for blowing air to a luminescence receiving surface of the luminescence detection part.
Abstract:
An optical absorption gas sensor for detecting an analyte gas comprises a gas sample receiving chamber, at least one light emitting diode (LED) and a photodiode or other photosensor. A plurality of light pulses are generated by passing pulses of current through the at least one LED. The current through the at least one LED is measured a plurality of times during each pulse and taken into account when generating a compensated output signal. The transfer ratio between LED current and photodiode output signal is calculated a plurality of times during each pulse. An ADC measures the LED and photodiode currents alternately. The LED pulses are generated by inductor discharge flyback and the period of time for which current is supplied to the inductor prior to each pulse is selected so that the photodiode output current is at an optimal region within the input range of the ADC. At least the temperature of the at least one LED is measured and taken into account when generating the compensated output signal. Thus, rather than providing especially careful control of the LED pulses, the pulses are measured, enabling a simpler, lower power circuit which is tolerant of variations in temperature to be provided.
Abstract:
PROBLEM TO BE SOLVED: To provide a method and system for performing sample assay to produce and measure optical responses and signatures. SOLUTION: According to various embodiments, a system is provided that includes one or more LEDs (111), a temperature sensor (118) and a temperature regulator (122). The temperature sensor can thermally-contact the LED (111), can measure operating temperature, and also can generate operating temperature signal. The temperature regulator can receive the operating temperature signal of the LED to adjust operating temperature based on its received operating temperature signal. According to various embodiments, there is provided a method for irradiating a reaction area (108) with excitation beam. The method may include a step for providing a system (100) containing the LED (111) and the reaction area (108). COPYRIGHT: (C)2011,JPO&INPIT
Abstract:
A system and method are described herein for self-referencing a sensor that is used to detect a biomolecular binding event and/or kinetics which occur in a sample solution flowing along side a reference solution in a micron-sized deep flow channel.
Abstract:
PROBLEM TO BE SOLVED: To solve the problem that the depth of a focus becomes shallow because a fine flaw detection sensitivity is enhanced by raising a detection magnification in a flaw inspection device, an image forming position is shifted by environmental fluctuations and flaw detection sensitivity becomes unstable. SOLUTION: The flaw inspection device is equipped with an XY stage loaded with a substrate to be inspected to perform scanning in a predetermined direction and a mechanism for correcting the change of an image forming position with respect to a change in temperature and atmospheric pressure in order to hold an image forming state to the best state in a system for obliquely illuminating the flaw on the substrate to be inspected to detect the same by the detection optical system arranged above the substrate to be inspected. COPYRIGHT: (C)2007,JPO&INPIT