Hamamatsu Photonics K K

Shizuoka, Japan

Hamamatsu Photonics K K

Shizuoka, Japan
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Patent
Hamamatsu Photonics K K and Nakayama | Date: 2017-04-05

The position of a metal marker 5 relative to an optical fiber 6 is fixed, and the metal marker 5 can be moved up close to a target site such as a thrombus. It is preferable that the position, in an optical fiber longitudinal direction, of a front-end face of the optical fiber 6 is coincident with the position, in an optical fiber longitudinal direction, of a front-end face of the metal marker 5. More specifically, since the distance between the target site and the front end of the optical fiber 6 is known by radiography, it becomes unnecessary to use a large quantity of contrast agent and irradiate a laser beam depending on skill and intuition, and therefore an effective laser beam irradiation becomes possible.


In a ranging device 10, a controlling unit CONT alternatively switches orders in time series of a first pulse-transfer-signal S_(1) and a second pulse-transfer-signal S_(2) per frame term T_(F) and outputs the first and second pulse-transfer-signals S_(1), S_(2). Furthermore, an arithmetic unit ART arithmetizes a distance d to an object OJ based on total quantities of charges Q_(1) and Q_(2) of signal charges, in two frame term T_(F) consecutive in the time series, accumulated in a first charge-accumulating region FD1 and a second charge-accumulating region FD2 in accordance with the first and second pulse-transfer-signals S_(1), S_(2) having an identical phase.


An optical plate is an optical plate for irradiating a target with light, and includes a light input surface for inputting the light, a light output surface for outputting the light, a back surface opposite to the light output surface, and a light diffusion portion formed at least inside the optical plate by converging laser light, for diffusing the light. The light input surface is a surface between the light output surface and the back surface, and the light input from the light input surface is diffused in the light diffusion portion and output from the light output surface.


Patent
Hamamatsu Photonics K K | Date: 2017-03-08

A laser processing device 1 includes a laser light source 10, a spatial light modulator 20, a control section 22, and a condensing optical system 30. The spatial light modulator 20 is input with a laser light output from the laser light source 10, presents a hologram for modulating the phase of the laser light in each of a plurality of two-dimensionally arrayed pixels, and outputs the phase-modulated laser light. The control section 22 causes a part of the phase-modulated laser light (incident light) to be condensed at a condensing position existing in a processing region as a laser light (contribution light) having a constant energy not less than a predetermined threshold X. On the other hand, the control section 22 causes a laser light (unnecessary light) other than the contribution light condensed to the condensing position existing in the processing region to be dispersed and condensed at a condensing position existing in a non-processing region as a plurality of laser lights (non-contribution lights) having an energy less than the predetermined threshold X.


Patent
Hamamatsu Photonics K K | Date: 2017-01-18

A semiconductor laser device includes: a semiconductor laser array in which a plurality of active layers that emit laser lights with a divergence angle _(S) (>4) in a slow axis direction are arranged in the slow axis direction; a first optical element that reflects first partial lights advancing to one side in the slow axis direction by a first reflecting surface and returns the first partial lights to the active layers; and a second optical element that reflects partial mode lights of a plurality of mode beams of second partial lights advancing to the other side in the slow axis direction by a second reflecting surface and returns the partial mode lights to the active layers, the first optical element is disposed such that the first reflecting surface forms an angle equal to or greater than 2 and less than (_(S)/2) with a plane perpendicular to an optical axis direction of the active layers, and the second optical element is disposed such that the second reflecting surface forms an angle greater than (-_(S)/2) and equal to or less than -2 with the plane perpendicular to the optical axis direction of the active layers.


Patent
Hamamatsu University School of Medicine and Hamamatsu Photonics K K | Date: 2017-03-22

A breast measurement apparatus 1A includes a distance measurement unit 10 measuring a distance from a skin to a light absorption portion for a measurement region of a breast which is a normal region including no tumor or an object region including a tumor, a light measurement unit 15 measuring a hemoglobin amount in the measurement region by a light measurement method using measurement light of a predetermined wavelength, a correlation data storage unit 33 storing normal correlation data of the distance to the light absorption portion and a normal hemoglobin amount generated based on measurement results for normal regions, and an evaluation value calculation unit 35 calculating a property evaluation value of the tumor based on the normal hemoglobin amount, obtained from the normal correlation data and the distance to the light absorption portion in the object region, and an object hemoglobin amount in the object region. This realizes a breast measurement method and a measurement apparatus capable of improving measurement accuracy of a property of a tumor inside a breast.


Patent
Hamamatsu Photonics K K | Date: 2017-03-29

An optical measurement device inputs excitation light to an integrating sphere in which a sample is disposed, irradiates the sample with the excitation light having a predetermined beam cross-section, detects measurement light output from the integrating sphere by a photodetector, and acquires intensity data of the sample. The optical measurement device includes a storage unit in which correction data is stored and an optical characteristic calculation unit for calculating optical characteristics of the sample based on the intensity data of the sample and the correction data. The correction data is calculated based on first corrective intensity data and second corrective intensity data. The predetermined beam cross-section is covered with the first light absorbing member and covers the second light absorbing member.


A radiation image acquiring system that improves the detection accuracy of a foreign substance etc., in a subject is provided. An X-ray image acquiring system 1 irradiates X-rays to a subject S from an X-ray source, and detects X-rays in a plurality of energy ranges transmitted through the subject S. The X-ray image acquiring system 1 includes a low-energy detector 32 for detecting X-rays in a low-energy range that is transmitted through the subject S to generate low-energy image data, a high-energy detector 42 arranged in parallel to the low-energy detector 32 with a dead zone region 82 sandwiched therebetween, for detecting X-rays in a high-energy range that is transmitted through the subject S to generate high-energy image data, and a timing control section 50 for controlling detection timing of the high-energy detector 42 based on a dead zone width NW of the dead zone region 82 so that low-energy image data to be generated by the low-energy detector 32 and high-energy image data to be generated by the high-energy detector 42 mutually correspond.


Patent
Hamamatsu Photonics K K | Date: 2017-03-22

A solid-state imaging device includes a photodetecting unit, a row control unit, a column control unit, and a signal readout unit. The photodetecting unit includes MN pixel units P(1,1) to P(M,N) two-dimensionally arrayed in M rows and N columns. Each pixel unit P(m,n) includes a photodiode PD, an amplifying transistor Tr1, a transfer transistor Tr2, a readout transistor Tr3, a first initialization transistor Tr4, and a second initialization transistor Tr5. One of the transfer transistor Tr2 and the first initialization transistor Tr4 performs an on/off operation based on a control signal output from the row control unit, and the other performs an on/off operation based on a control signal output from the column control unit. Thus, a solid-state imaging device capable of setting an accumulation period of various patterns different for each pixel is realized.


Patent
Hamamatsu Photonics K K | Date: 2017-03-15

In any three of three range sensors P_(Bn), P_(Am), P_(Am+1) consecutively aligned in a one-dimensional direction A, first signal charge-accumulating regions FD1 are adjacent to each other in the one-dimensional direction A in the range sensor P_(Am) positioned in a center of the three range sensors and the range sensor P_(Bn) positioned closer to one side of the one-dimensional direction A than the range sensor P_(Am), and the first signal charge-accumulating region FD1 and the second signal charge-accumulating region FD2 are adjacent to each other in the one-dimensional direction A in the range sensor P_(Am) positioned in the center of the three range sensors and the range sensor P_(Am+1) positioned closer to an another side of the one-dimensional direction A than the range sensor P_(Am).

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