23 results about "Fluence" patented technology

The invention provides a light generating system (1000) configured to generate in a first operational mode of the light generating system (1000) system light (1001), wherein: the system light (1001) in the first operational mode has a spectral power distribution with at least 85% of the spectral power in three emission bands (111,121,131) comprising (i) a first emission band (111) having a centroid wavelength of 445 nm + / −25 nm and having a full width half maximum of at maximum 25 nm, (ii) a second emission band (121) having a centroid wavelength of 541 nm + / −25 nm and having a full width half maximum of at maximum 150 nm, and (iii) a third emission band (131) having a centroid wavelength of 614 nm + / −25 nm and having a full width half maximum of at maximum 25 nm; in the first operational mode the light generating system (1000) is configured to control the spectral power distribution of the system light (1001) in dependence of a radiant flux of the system light (1001) while maintaining a correlated color temperature of the system light (1001) within + / −10% of a predetermined correlated color temperature value; and in the first operational mode the light generating system (1000) is configured to shift a color point (1010) of the system light (1001) towards a lower Duv with decreasing radiant flux of the system light (1001) or to shift the color point (1010) of the system light (1001) towards a higher Duv with increasing the radiant flux of the system light (1001).

The invention provides a light generating system (1000) comprising (a) first light generating device (110) and (b) a control system (300), wherein: the first light generating device (110) is configured to generate first device light (111), wherein the first device light (111) comprises light having one or more wavelengths in a first wavelength range of 280-320 nm, wherein the first wavelength range comprises a lower subrange from λ11 to λ12 and a higher subrange from λ21 to λ22, wherein 280 nm≤λ11<λ12≤λ21<λ22≤320 nm, and wherein λ12 and λ21 are selected from the wavelength range of 290-315 nm, wherein a wavelength dependent radiant flux of the first device light (111) is controllable: the light generating system (1000) is configured to generate system light (1001) comprising at least part of the first device light (111); the control system (300) is configured to control the wavelength dependent radiant flux of the first device light (111) as a function of time, wherein the light gen-crating system (1000) is configured to provide the first device light (111) at a first time t1, at a second time t2, and at a third time t3; wherein the second time t2 is temporally arranged after the first time t1, and the third time t3 is temporally arranged after the second time t2; and wherein the first time t1, the second time t2, and the third time t3 are temporally arranged in a single day; wherein relative to a total radiant flux in the first wavelength range the radiant flux of the first device light (111) in the lower subrange is relatively lower at the first time t1 than at the second time t2, and wherein relative to the total radiant flux in the first wavelength range the radiant flux of the first device light (111) in the higher subrange is relatively higher at the first time t1 than at the second time t2; and / or wherein relative to the total radiant flux in the first wavelength range the radiant flux of the first device light (111) in the lower subrange is relatively higher at the second time t2 than at the third time t3, and wherein relative to the total radiant flux in the first wavelength range the radiant flux of the first device light (111) in the higher subrange is relatively lower at the second time t2 than at the third time t3.

Devices, systems, and methods are provided for effecting person decompression and / or other health beneficial effects by controlling one or more attributes of illumination observed by a person, such as color (or wavelength) and / or intensity. Apparatuses or systems provided herein may include area lighting (e.g., for a room, a portion of a room, a vehicle) and / or specific devices (e.g., medical instruments and devices). During operation, the lighting fixture or other light source outputs light in a selected range of the visible spectrum, such as the amber range (e.g., 570-680 nm), the red range (e.g., above 680 nm), and the green range (e.g., 510-540 nm), while avoiding other ranges (e.g., below 510 nm). The light emitted by the system or device may occupy part, most or all of the radiation flux touched by the person, and the decompression effect can be verified by biological or biological recognition detection.

Examples relate to methods and systems for evaluating near-infrared (NIR) performance of endoscopes. A method includes illuminating an endoscope's entrance pupil with a first radiant flux diffused through a first integrating sphere, the first radiant flux having a first spectrum, measuring a second radiant flux collected by a second integrating sphere at the exit pupil having a second spectrum, and determining transmission by comparing the spectra. The method includes determining a normalization factor for the second spectrum by finding the maximum value of a ratio of output scaled spectrum and input normalized spectrum. The method includes determining transmission through the endoscope as the ratio of the output normalized spectrum sum in an NIR region to the input normalized spectrum sum in the same NIR region.

The invention relates to a method for controlling illumination of a surface of an object by means of a viewing device (10), the viewing device (10) comprising:-a display (17) comprising several sub-regions configured to be in a first state in which the sub-regions transmit light in a first direction and a second state in which the sub-regions do not transmit light in the first direction; the method comprises:-obtaining a value of the radiation flux received by each sub-region,-converting said value into an irradiance value,-selecting an average irradiance value based on the converted irradiance value and a predetermined value to obtain a target average irradiance value, and-determining a control rule such that, during a predefined duration, the target average irradiance value is controlled to obtain the target average irradiance value. The total duration during which each sub-region is in the second state depends on the ratio of the target average irradiance value to the obtained value.

This wet-area device is characterized by comprising an irradiation device that radiates light, and a sterilization unit that is sterilized by light radiated from the irradiation device. The sterilization unit has a direct irradiation unit that is irradiated with direct light radiated from the irradiation device, and an indirect irradiation unit that is irradiated with reflected light radiated from the irradiation device and reflected by the direct irradiation unit. The direct light has a peak wavelength of 350-450 nm in at least a spectrum. The ratio of the short-wavelength radiant flux to the total radiant flux of the reflected light is smaller than the ratio of the short-wavelength radiant flux to the total radiant flux of the direct light.

The invention provides a light generating system (1000) comprising: (i) a light generating device (100) configured to generate device light (101) having a controllable radiant flux and a controllable spectral power distribution; and (ii) a control system (300) configured to control the radiant flux and the spectral power distribution of the device light (101); wherein: (A) a ratio B / Y of the device light (101) is defined as a ratio of a radiant flux of the device light (101) in a 450-500 nm wavelength range to a radiant flux of the device light (101) in a 550-600 nm wavelength range; (B) in a first operating mode of the light generating system (1000), the control system (300) is configured to change from a first device light setting to a second device light setting different from the first device light setting; (C) the first device light setting and the second device light setting are selected from: (a) a high radiant flux first setting (SI) in which the device light (101) is a first light having a first radiant flux II and a first B / Y ratio Rl; and (b) a low radiant flux second setting (S2) in which the device light (101) is a second light having a second radiant flux I2 and a second B / Y ratio R2; and (D) I2 < II, and Rl < R2.

This application discloses a method, apparatus, equipment, medium, and product for blackbody temperature control and calibration, relating to the interdisciplinary technical fields of precision thermal control and radiometry. The method includes: constructing a generalized end-to-end optical-thermal energy transfer model; based on the generalized end-to-end optical-thermal energy transfer model, performing inversion based on the required entrance pupil radiant flux or equivalent image grayscale value, and obtaining the corrected blackbody setpoint temperature through numerical iterative calculation; and using a piecewise active disturbance rejection control system and a temperature-adaptive thermodynamic piecewise control strategy, tracking and controlling the corrected blackbody setpoint temperature. This application can achieve accurate inversion of blackbody temperature and rapid, accurate, overshoot-free closed-loop control of blackbody temperature.

The invention provides a light generating system (1000) comprising a first light generating device (110), a second light generating device (120), a luminescent material (200), a control system (300), optics (500), a polarization control system (600), a diffuser system (1710), and a light exit (1090); wherein: in a first operational mode of the light generating system (1000), the first light generating device (110) is configured to provide first device light (111) with a first radiant flux Pl, and the second light generating device (120) is configured to provide second device light (121) with a second radiant flux P2, wherein one of the first radiant flux Pl and the second radiant flux P2 is at least 5% larger than the other one of the first radiant flux Pl and the second radiant flux P2; the luminescent material (200) is configured to convert at least part of the first device light (111) and / or at least part of the second device light (121) received by the luminescent material (200) into luminescent material light (201); the diffuser system (1710) comprises a diffuser (710); wherein the diffuser system (1710) is configured to diffuse at least part of the first device light (111) and / or at least part of the second device light (121) received by the diffuser system (1710) into diffused device light (711); the optics (500) comprise redirection optics (510); wherein the redirection optics (510) comprise a first polarization based redirection optics (PBS1) and a second polarization based redirection optics (PPBS2); the light generating system (1000) is configured to generate system light (1001); the control system (300) is configured to control a spectral power distribution of the system light (1001); and in the first operational mode of the light generating system (1000) the system light is white light (1001) comprising at least part of the luminescent material light (201) and at least part of the diffused device light (711).

A system for preventing abnormal fan blade deflection or fan flutter includes an optical emission source, an optical receiver, and a retroreflector attached to a fan blade of an engine. The system emits a radiation flux from the optical emission source towards the retroreflector when the engine is in operation; receiving, by the optical receiver, a flux of incident radiation from the retroreflector; determining a deflection value of the fan blade based on the incident radiation flux received by the optical receiver; determining whether the deflection value is greater than or equal to a threshold value of deflection of the fan blade to identify abnormal fan blade deflection or fan flutter; and selectively changing the state of the engine when the abnormal fan blade deflection or fan chatter is identified.

To radiate UV light of an appropriate intensity from an irradiation unit.SOLUTION: A liquid discharge device comprises: a liquid discharge unit for discharging onto a medium a liquid that is cured by UV irradiation; an irradiation unit for radiating UV light to the liquid discharged onto a medium; a carriage which carries the liquid discharge unit and the irradiation unit, and moves on the medium; and a motor for moving the carriage. The irradiation unit comprises: a substrate; a UV light source which is provided on the substrate, changes its radiation flux characteristics according to temperature, and emits UV light; and an integrated circuit for detecting a temperature in the irradiation unit, and outputting a digital signal based on the detected temperature.SELECTED DRAWING: Figure 1

A light emitting device includes: a light emitting element that emits ultraviolet light having an emission peak wavelength of from 220 nm to 320 nm, and that has a radiant flux of higher than 20 mW; a first member; a second member; and a silicone resin layer that bonds the first member and the second member together, transmitting the ultraviolet light in this order. A first interface between the silicone resin layer and the first member has a shortest distance (A), from the center of the first interface to the peripheral edge of the first interface, of 1.00 mm or less. The thickness (B) of the silicone resin layer is 0.6 μm or more. The ratio (A / B) is 900 or less when the units are unified.

An X-ray irradiation apparatus (100) comprises an X-ray source device (110) for creating X-rays (2) with a polychromatic spectrum and an X-ray optic device (120) with a beam axis (3) that is longitudinal, wherein the X-ray optic device (120) comprises a reflector device (121) that is polycrystalline having a reflector geometry, a reflector mosaicity and a reflector thickness and the reflector device (121) is arranged for receiving a portion of the X-rays (2) within an acceptance angle of the reflector device (121) and for creating an X-ray beam (4) by Bragg reflection, which is directed along the beam axis (3) towards a focal position thereof and has a spectral distribution determined by the polychromatic spectrum of the X-rays (2), the reflector geometry, the reflector mosaicity and the reflector thickness, and wherein the X-ray irradiation apparatus (100) further comprises a spectral filter aperture device (122) that is arranged downstream from the reflector device (121) for creating a filter gap (123) transmitting a first spectral portion (4A) of the spectral distribution of the X-ray beam (4) and blocking a second spectral portion (4B) and a third spectral portion (4C) of this spectral distribution, wherein the first spectral portion (4A) has higher energies than the second spectral portion (4B) and lower energies than the third spectral portion (4C), wherein the reflector device (121) has an acceptance solid-angle of at least 100 micro-steradian, and wherein the reflector geometry, the reflector mosaicity, the reflector thickness and the acceptance angle of the reflector device (121) are selected such that simultaneously a radiation flux in the first spectral portion (4A) is at least 1% of an incoming flux of the same spectral portion of the X-rays (2) received by the reflector device (121) with a peak reflectivity of at least 1%, the first spectral portion (4A) has a spectral bandwidth of at most 15%, the second and third spectral portions (4B, 4C) have a flux reduced by at least three orders of magnitude compared with the flux in the first spectral portion (4A), and the X-ray beam (4) has a focal spot size of less than 1.5 mm in both transverse dimensions relative to the longitudinal beam axis. Furthermore, an X-ray fluorescence imaging apparatus (200) and a method of using the X-ray irradiation apparatus (100) are described.

A system for preventing asynchronous rotation in aircraft components includes an optical emitting source, an optical receiver, and a retroreflector configured to be disposed on a rotating component connected to an engine of an aircraft. The system emits radiant flux from the optical emitting source towards the retroreflector when the retroreflector is on the rotating component and the engine positions the rotating component into a field of view of the optical emitting source; receives incident radiant flux from the retroreflector by the optical receiver when the retroreflector is within the field of view of the optical emitting source; records a time of receiving the incident radiant flux; determines a rotational speed of the rotating component based on the recorded time; determines whether the rotational speed is within a predetermined range; and selectively changes a state of the engine when the rotational speed is outside of the predetermined range.

The invention provides a light generating system (1000) comprising (i) a light generating device (100) configured to generate device light (101) having a controllable radiant flux and a controllable spectral power distribution, and (ii) a control system (300) configured to control the radiant flux and the spectral power distribution of the device light (101); wherein: (A) a ratio B / Y of the device light (101) is defined as a ratio of a radiant flux of the device light (101) in the 450-500 nm wavelength range and of a radiant flux of the device light (101) in the 550-600 nm wavelength range; (B) in a first operational mode of the light generating system (1000) the control system (300) is configured to change from a first device light setting to a second device light setting, different from the first device light setting; (C) the first device light setting and the second device light setting are selected from: (a) a high radiant flux first setting (S1) wherein the device light (101) is first light with a first radiant flux I1 and a first B / Y ratio R1; and (b) a low radiant flux second setting (S2) wherein the device light (101) is second light with a second radiant flux I2 and a second B / Y ratio R2; and (D) I2<I1, and R1<R2.

A laser-driven light source includes a laser source that generates continuous wave sustaining light includes a diode laser that generates a CW laser beam at an output and an optical element optically coupled to the output of the diode laser. The optical element includes a region that passes a portion of the CW laser beam to the output of the laser source and a reflection region that reflects another portion of the CW laser beam back to the output of the diode laser. The reflection region is configured to select a spatial mode and wavelength of the laser beam generated by the diode laser, thereby generating the CW sustaining light with radiant flux and spectral shape that is stable as a function of time. A gas-filled bulb optically coupled to the output of the laser source such that the generated CW sustaining light sustains a CW plasma in the gas-filled bulb, thereby emitting light with radiant flux and spectral shape stable as a function of time.

Provided is an examination device comprising: a laser irradiation unit that irradiates an eye being examined with a pulsed laser beam; and a fluorescence detection unit that is provided with a detector for detecting autofluorescence which is from floating cells in the eye being examined and which occurs due to irradiation of the eye being examined with the pulsed laser beam, wherein the radiant exposure of the pulsed laser beam with which the floating cells in the eye being examined are irradiated is not more than 10 J / cm2. Also provided is a slit lamp microscope comprising the examination device.

The invention provides a device and method for adjusting RGB light combination. The device for adjusting RGB light combination comprises a cold light source host and a spectrum test system, wherein the cold light source host comprises an RGB light emitting source, a main control board module, a driving board module and a receiving board module; the RGB light emitting source generates RGB combined light according to the driving current, and transmits the RGB combined light to the spectrum testing system through the light transmitting bundle; the spectrum test system performs spectral analysis on the RGB combined light, determines spectral data of the RGB combined light, and transmits the spectral data to the receiving plate module; the receiving board module transmits the spectral data to the main control board module; the main control board module carries out feedback adjustment on the numerical value of the driving current through the driving board module based on the first value range of the target red-green radiation flux ratio, the second value range of the target blue-green radiation flux ratio and the red-green radiation flux ratio and the blue-green radiation flux ratio of the spectral data; the red-green radiation flux ratio and the blue-green radiation flux ratio of the RGB combined light are in the first value range and the second value range respectively.

The invention relates to the technical field of hydrogen energy safety monitoring, and discloses a hydrogen flame combustion state monitoring device and method based on infrared pyroelectric sensing, and the device comprises a metal housing, a sapphire glass window, a narrow-band optical filter, an infrared pyroelectric sensor, a signal conditioning circuit board and a microprocessor. The characteristic radiation of hydrogen combustion product water vapor in a specific infrared band is utilized, optical frequency selection is realized through a narrow-band optical filter, a flame flicker signal is extracted by utilizing the characteristic that the pyroelectric sensor is sensitive to the change rate of radiation flux, and the microprocessor calculates the signal energy characteristic in real time, so that the flame flicker signal is obtained. The flame state is judged by combining threshold comparison and time confirmation logic, and then alarm and safety interlocking control are driven. The method effectively solves the problems that the hydrogen flame is difficult to identify and the traditional method is poor in anti-interference capability, and has the advantages of high monitoring specificity, high sensitivity, good reliability, low cost and the like.

The application discloses a calibration method and device of a wide-band irradiance meter with high irradiance. The method comprises the following steps: calibrating a spectral radiometric device to obtain a spectral correction coefficient; measuring spectral radiant flux of a fiber type wide-band light source and correcting the spectral radiant flux by using the spectral correction coefficient to obtain corrected spectral radiant flux; calculating radiant flux of a predetermined wave band according to the corrected spectral radiant flux; calculating a radiant illuminance value of a fiber output port as a standard value according to the radiant flux of the predetermined wave band; measuring a reading of a measured irradiance meter at the same fiber output port, comparing the reading with the standard value, and obtaining a calibration result. The application solves the problem that the existing light track method cannot be adapted to the fiber type irradiance meter by combining an integrating sphere with a standard fiber and introducing a fiber output light source into the integrating sphere to homogenize light. The radiant illuminance is accurately calculated by using a standard lamp calibration and a fiber end surface area, near distance measurement error is avoided, and accurate calibration of high irradiance is realized.

A laser-driven light source includes a laser source that generates continuous wave sustaining light includes a diode laser that generates CW light and an optical element optically coupled to the output of the diode laser. The optical element includes a region that passes a portion of the CW light to the output of the laser source and a reflection region that reflects another portion of the CW light back to the diode laser. The reflection region is configured to select a spatial mode and wavelength of the laser light generated by the diode laser, thereby generating the CW sustaining light with radiant flux and spectral shape that is stable. A gasfilled bulb optically coupled to the output of the laser source such that the generated CW sustaining light sustains a CW plasma in the gas-filled bulb, thereby emitting light with radiant flux and spectral shape stable.

Systems and methods for phototherapeutic modulation of nitric oxide in mammalian tissue include use of a first wavelength and first radiant flux of light to stimulate enzymatic generation of nitric oxide, and use of a second wavelength and second radiant flux of light to stimulate release of nitric oxide from endogenous stores of nitric oxide. Pulsed light and / or partially non-overlapping light impingement windows may be used. Non-coherent light impinged on tissue may include a peak wavelength in a range of from 410 nm to 440 nm in the absence of light emissions having a peak wavelength of from 600 nm to 900 nm.

The invention discloses a calibration method and device for a high-irradiance broadband irradiatometer. The method comprises the following steps: calibrating a spectral radiation measurement device to obtain a spectral correction coefficient; measuring the spectral radiation flux of the optical fiber type broadband light source, and correcting the spectral radiation flux by using the spectral correction coefficient to obtain the corrected spectral radiation flux; calculating the radiation flux of the predetermined wave band according to the corrected spectral radiation flux; according to the radiation flux of the preset wave band, calculating a radiation illumination value of the optical fiber output port as a standard value; and measuring the reading of the measured irradiatometer at the same optical fiber output port, and comparing the reading with the standard value to obtain a calibration result. Through combination of the integrating sphere and the standard optical fiber, an optical fiber output light source is introduced into the integrating sphere for dodging, and the problem that an existing optical track method cannot adapt to an optical fiber type irradiatometer is solved; the irradiance is accurately calculated through calibration of the standard lamp and the area of the end face of the optical fiber, close-range measurement errors are avoided, and accurate calibration of the high irradiance is achieved.