Abstract: Provided is a holder which comprises at least two probe mount portions and is to be put on the head of a subject by inserting a light-transmitting probe for emitting light from the tip thereof or a light-receiving probe for receiving light through the tip thereof in the probe mount portion, the holder characterized by being provided with a linear backbone portion extending in a first direction, at least two linear branch portions extending in a second direction different from the first direction, and a disposition reference point disposed so as to match a first specific point, the first specific point being set in the head of the subject.

Abstract: A photobiological measurement apparatus 1 may include a second received light quantity information calculation unit 33 for calculating measurement data relating to cerebral activity, a data display controller for displaying the measurement data for a specified area of a subject's brain, is characterized: is being provided with a reference light-receiving probe 14, which is disposed at a position separated by a first setting distance r1 from the light-transmitting prober 12 that is shorter than a second setting distance r2, and a first received light quantity information calculating unit 32, which calculates skin blood flow data relating to the skin blood flow using first received light quantity information ?A1 from the light transmitting probe 12 to the reference light-receiving probe 14, and in displaying the skin blood flow data at a specified position of the subject's scalp by indicating the measurement position on the subject's scalp and displaying the skin blood data.

Abstract: An optical measuring system comprises a control device and an optical meter. The optical meter comprises a first case, a first controller for controlling light emitters for irradiating a patient with light and light receivers for receiving light from the patient to obtain measurement data regarding a cerebral activity, and a first transmitter and receiver for transmitting the measurement data to the control device. The control device comprises a second case removably attached to the first case, a display and input device on a surface of the second case, a second transmitter and receiver for receiving the measurement data from the optical meter, and a second controller for controlling the display and input device to display the measurement data from the optical meter. The second case can be attached on a top face of the first case when the first case is placed on a table.

Abstract: An optical biometric system (1) is characterized by being provided with: a first received light amount information acquisition unit (25) which acquires skin blood flow data relating to a skin blood flow in a wide range of the scalp of a subject by controlling the transmission/reception of light to/from a light transmission/reception unit (30) using a wide-range control table; and a selection control table creation unit (24) which causes a storage unit (23) to store a selection control table for acquiring X pieces of first received light amount information (?A1) selected from among N pieces of first received light amount information (?A1), and in that when acquiring multiple pieces of measurement data relating to the brain activity in a predetermined range of the brain of the subject by controlling the transmission/reception of light to/from the light transmission/reception unit (30) using a control table, a light transmission/reception control unit (21) acquires skin blood flow data relating to a skin blood f

Abstract: A photobiological measurement apparatus 1 may include a second received light quantity information calculation unit 33 for calculating measurement data relating to cerebral activity, a data display controller for displaying the measurement data for a specified area of a subject's brain, is characterized: is being provided with a reference light-receiving probe 14, which is disposed at a position separated by a first setting distance r1 from the light-transmitting prober 12 that is shorter than a second setting distance r2, and a first received light quantity information calculating unit 32, which calculates skin blood flow data relating to the skin blood flow using first received light quantity information ?A1 from the light transmitting probe 12 to the reference light-receiving probe 14, and in displaying the skin blood flow data at a specified position of the subject's scalp by indicating the measurement position on the subject's scalp and displaying the skin blood data.

Abstract: A photobiological measurement apparatus 1 may include a second received light quantity information calculation unit 33 for calculating measurement data relating to cerebral activity, a data display controller for displaying the measurement data for a specified area of a subject's brain, is characterized: is being provided with a reference light-receiving probe 14, which is disposed at a position separated by a first setting distance r1 from the light-transmitting prober 12 that is shorter than a second setting distance r2, and a first received light quantity information calculating unit 32, which calculates skin blood flow data relating to the skin blood flow using first received light quantity information ?A1 from the light transmitting probe 12 to the reference light-receiving probe 14, and in displaying the skin blood flow data at a specified position of the subject's scalp by indicating the measurement position on the subject's scalp and displaying the skin blood data.

Abstract: Provided is a holder which comprises at least two probe mount portions into which a light-transmitting probe for emitting light from the tip thereof or a light-receiving probe for receiving light through the tip thereof is inserted from above and is to be put on the head of a subject, the holder being characterized by further comprising: a linear backbone portion that extends in a first direction that is perpendicular to the above-described direction from above; and at least two linear branch portions that extend in a second direction that is perpendicular to the above-described direction from above and is different from the first direction, wherein the lower end portions of the probe mount portions protrude from the lower surface of the backbone portion or a branch portion and are tapered.

Abstract: Provided is a light measurement device capable of obtaining reproducible measurement data without the necessity for bringing a subject into the state of performance of a task such as finger movement many times, the measurement data having no variation and less affected by Mayer Wave and the like caused by respiration, blood pressure, and the like other than the performance of the task.

Abstract: A photobiological measurement apparatus 1 may include a second received light quantity information calculation unit 33 for calculating measurement data relating to cerebral activity, a data display controller for displaying the measurement data for a specified area of a subject's brain, is characterized: is being provided with a reference light-receiving probe 14, which is disposed at a position separated by a first setting distance r1 from the light-transmitting prober 12 that is shorter than a second setting distance r2, and a first received light quantity information calculating unit 32, which calculates skin blood flow data relating to the skin blood flow using first received light quantity information ?A1 from the light transmitting probe 12 to the reference light-receiving probe 14, and in displaying the skin blood flow data at a specified position of the subject's scalp by indicating the measurement position on the subject's scalp and displaying the skin blood data.

Abstract: An optical measuring system comprises a control device and an optical meter. The optical meter comprises a first case, a first controller for controlling light emitters for irradiating a patient with light and light receivers for receiving light from the patient to obtain measurement data regarding a cerebral activity, and a first transmitter and receiver for transmitting the measurement data to the control device. The control device comprises a second case removably attached to the first case, a display and input device on a surface of the second case, a second transmitter and receiver for receiving the measurement data from the optical meter, and a second controller for controlling the display and input device to display the measurement data from the optical meter. The second case can be attached on a top face of the first case when the first case is placed on a table.

Abstract: An optical biometric system (1) is characterized by being provided with: a first received light amount information acquisition unit (25) which acquires skin blood flow data relating to a skin blood flow in a wide range of the scalp of a subject by controlling the transmission/reception of light to/from a light transmission/reception unit (30) using a wide-range control table; and a selection control table creation unit (24) which causes a storage unit (23) to store a selection control table for acquiring X pieces of first received light amount information (?A1) selected from among N pieces of first received light amount information (?A1), and in that when acquiring multiple pieces of measurement data relating to the brain activity in a predetermined range of the brain of the subject by controlling the transmission/reception of light to/from the light transmission/reception unit (30) using a control table, a light transmission/reception control unit (21) acquires skin blood flow data relating to a skin blood f

Abstract: An optical measurement system has main and portable optical measurement devices. The main optical measurement device includes Ath first light sending devices and Bth first light receiving devices. The portable optical measurement device includes Cth second light sending devices for illuminating a subject, Dth second light receiving devices receiving light from the subject, a holder worn on a head of the subject and having through holes therein, a control unit acquiring measurement data relating to a brain activity while controlling the second light sending and receiving devices, and a communication device communicating with the main optical measurement device. (C+D)<(A+B) is satisfied. The communication device of the portable optical measurement device transmits the measurement data acquired by the control unit of the portable optical measurement device to the main optical measurement device.

Abstract: Provided is a holder which comprises at least two probe mount portions into which a light-transmitting probe for emitting light from the tip thereof or a light-receiving probe for receiving light through the tip thereof is inserted from above and is to be put on the head of a subject, the holder being characterized by further comprising: a linear backbone portion that extends in a first direction that is perpendicular to the above-described direction from above; and at least two linear branch portions that extend in a second direction that is perpendicular to the above-described direction from above and is different from the first direction, wherein the lower end portions of the probe mount portions protrude from the lower surface of the backbone portion or a branch portion and are tapered.

Abstract: Provided is a holder which comprises at least two probe mount portions and is to be put on the head of a subject by inserting a light-transmitting probe for emitting light from the tip thereof or a light-receiving probe for receiving light through the tip thereof in the probe mount portion, the holder characterized by being provided with a linear backbone portion extending in a first direction, at least two linear branch portions extending in a second direction different from the first direction, and a disposition reference point disposed so as to match a first specific point, the first specific point being set in the head of the subject.

Abstract: An optical measurement system having a main and a portable optical measurement devices. The portable optical measurement device is provided with a second case portable by the subject, C second light sending means for illuminating the subject, D second light receiving means receiving light emitted from the subject, a second holder worn on the head of the subject and having at least (C+D) through holes therein, a control unit acquiring measurement data relating to a brain activity while controlling the second light sending and receiving means, and a communication unit communicating with the main optical measurement device, that (C+D)>(A+B) is satisfied, and that the communication unit of the portable optical measurement device transmits the measurement data acquired by the control unit of the portable optical measurement device to the main optical measurement device.

Abstract: Provided is a light measurement device capable of obtaining reproducible measurement data without the necessity for bringing a subject into the state of performance of a task such as finger movement many times, the measurement data having no variation and less affected by Mayer Wave and the like caused by respiration, blood pressure, and the like other than the performance of the task.

Abstract: A device for origin of light absorbance used in an optical measuring instrument for measuring light absorption characteristics of a light diffusion sample. The device includes a light transmission terminal configured to irradiate a measurement light onto the light diffusion sample at a point of incidence of the light diffusion sample and a light diffusion plate through the interior of which the measurement light can be diffused and transmitted. A light receiving terminal is configured to receive the measurement light from the light diffusion sample for measurement at a point of detection of the light diffusion sample that is separate from the point of incidence. Optionally, the device can include a cleaning unit that cleans the light transmission terminal and light receiving terminal.

Abstract: A device for origin of light absorbance used in an optical measuring instrument for measuring light absorption characteristics of a light diffusion sample. The device includes a light transmission terminal configured to irradiate a measurement light onto the light diffusion sample at a point of incidence of the light diffusion sample and a light diffusion plate through the interior of which the measurement light can be diffused and transmitted. A light receiving terminal is configured to receive the measurement light from the light diffusion sample for measurement at a point of detection of the light diffusion sample that is separate from the point of incidence. Optionally, the device can include a cleaning unit that cleans the light transmission terminal and light receiving terminal.

Abstract: A method for efficiently separating pentafluoroethane (HFC-125) from a mixture thereof with chloropentafluoroethane (CFC-115). This method is performed by subjecting a mixture (2) of HFC-125 (6) and CFC-115 (4) to extractive distillation (1) to give highly concentrated HFC-125 (6). A hydrofluorocarbon compound (3) having two carbon atoms, particularly 1,1,1,2-tetrafluoroethane, is used as an extractant to obtain concentrated CFC-115 as a distillate and a mixture of HFC-125 having a reduced content of CFC-115 with the extractant as a bottom (5), the extractant being separated from HFC-124 in this mixture by distillation (9) and reused in the extractive distillation.

Abstract: There is provided a process of effectively separating pentafluoroethane (HFC-125) from a mixture of HFC-125 and chloropentafluoroethane (CFC-115). When the mixture of HFC-125 and CFC-115 is subjected to an extractive distillation to obtain a concentrated HFC-125, ethyleneglycol-based compounds (3) having a general formula: R1O(CH2CH2O)nR2 wherein R1 and R2 may be the same or different and are each independently selected from the group consisting of hydrogen and an alkyl group having 1 to 4 carbon atoms, and n is an integer with a value from 1 to 3 is used as an extractant, whereby CFC-115 is obtained as a distillate product (4) and a mixture of HFC-125 and the extractant as a bottom product (5) is obtained. Then, the extractant is separated from HFC-125 by distilling the mixture and re-used in the extractive distillation.