77 results about "Luminous flux" patented technology

The invention provides an LED street lamp brightness adaptive adjustment method and system, and the method comprises the steps: collecting light intensity time sequence data in a target region, the position-speed associated data of a road surface moving target, and power supply frequency fluctuation data through a Mesh network, so as to create a corresponding fusion data set; transmitting the fusion data set to an edge computing node of the LED street lamp to perform dynamic scene clustering and divide a plurality of target use scenes, and synchronously outputting an initial brightness adjustment parameter matched with each target use scene; historical operation data of the LED street lamp is called, a corresponding brightness attenuation prediction model is constructed, and the brightness attenuation amount in the future preset time is predicted according to the current operation duration and the environment temperature data; and performing pre-compensation correction processing on the initial brightness adjustment parameter according to the brightness attenuation so as to output a corresponding target brightness control parameter, and correspondingly controlling the output luminous flux of the LED street lamp according to the target brightness control parameter. The energy-saving benefit of the street lamp can be effectively improved.

The invention relates to a dual-waveband medium-long wave infrared optical filter based on a germanium / zinc sulfide asymmetric film system and a preparation method of the dual-waveband medium-long wave infrared optical filter. The dual-waveband medium-long wave infrared optical filter comprises a front film system, a substrate and a back film system, the front film system and the back film system are formed by alternately overlapping germanium layers and zinc sulfide film layers; the average transmittance of the infrared optical filter in the wave band of 3800 nm to 4800 nm and the wave band of 8000 nm to 10000 nm is not lower than 91%. According to the two-waveband medium-long wave infrared optical filter disclosed by the invention, 3800 to 4800 nm amp is realized; according to the infrared filtering window, the light energy of medium waves and long waves of 8000-10000 nm is improved, the luminous flux of other wavebands is well inhibited, the technical problem of the infrared filtering window in some special infrared spectrum detection systems is solved, and a new scheme is provided for infrared application.

The invention provides europium-doped silicate green fluorescent powder as well as a preparation method and application thereof, and belongs to the technical field of luminescent materials. The green fluorescent powder can generate narrow-spectrum green light with the peak value located at 532 nm under excitation of 450 nm blue light, the full width at half maximum is 46 nm, a white light LED device prepared based on the fluorescent powder has a 110% NTSC color gamut, and it is indicated that the green fluorescent powder has excellent application value in backlight display. The saturation threshold value of the fluorescent powder reaches 21.6 W / mm < 2 > under the excitation of 450nm blue laser, and the lumen at the moment reaches 1157.9 lm. The green fluorescent powder disclosed by the invention has the advantages of high luminous efficiency, narrow full width at half maximum, high light saturation threshold under blue laser excitation, high lumen efficiency and the like, and has application feasibility in the aspect of laser display.

To provide a light-emitting device which has less reduction in total luminous flux due to narrowing of an angle and is easily manufactured.SOLUTION: A light-emitting portion that is disposed on the substrate, includes a light-emitting layer, and emits light from the light-emitting layer as emitted light from an upper surface located on a side opposite to the substrate; An optical function portion including a pedestal portion disposed above a light emission surface of the light-emitting portion and spaced apart from an upper surface of the light-emitting portion, the pedestal portion including a plate-shaped portion extending to cover the light emission surface of the light-emitting portion in a top view, and a plurality of projections formed on the upper surface of the pedestal portion; A low refractive index portion made of a low refractive index substance having a refractive index lower than that of the optical function portion, wherein each of the plurality of convex portions is a pyramid or a truncated pyramid whose bottom surface is disposed on the upper surface of the pedestal portion.SELECTED DRAWING: Figure 2

To provide a lighting device capable of faithfully reproducing a color of an irradiated object.SOLUTION: The lighting system A1 is provided with two kinds of LED10, 20 and a lighting device 2. The two types of LED10 20, 20 include a first 1LED10 and a second 1LED10 that emits light having a higher color gamut area ratio than the first 2LED20. The lighting device 2 individually dims the 1LED10 and the 2LED20 so that the ratio of the light flux of the 1LED10 to the total light flux becomes large when the total light flux of the 1LED10 and the 2LED20 is larger than the thresholds. The lighting device 2 individually dims the first 2LED20 and the second 1LED10 so as to increase the ratio of the light flux of the first 2LED20 to the total light flux. The lighting device 2 individually dims the 1LED10 and the 2LED20 so that the ratio of the light flux of the 1LED10 and the ratio of the light flux of the 2LED20 are the same.SELECTED DRAWING: Figure 1

The invention discloses a quantitative detection method for anti-perspective performance of a textile in a complex light environment, and belongs to the technical field of new material detection, a micro gap is arranged between the textile to be detected and a variable-frequency gray scale target to simulate a non-clinging state when clothes are worn and excite Fresnel diffraction and subsurface scattering effects, and the anti-perspective performance of the textile is detected. Complex illumination conditions such as backlight and sidelight are simulated by adjusting the light intensity ratio, and after a target perspective image is acquired by using an image acquisition unit, the modulation transfer function attenuation rate of a to-be-detected textile to the target is calculated, so that the anti-perspective performance of the textile is quantitatively represented; the interference of glare on the surface of the high-gloss fabric is effectively eliminated by introducing an orthogonal polarization modulation technology, and a detection result is highly consistent with the visual perception of human eyes by adopting a specific light source spectrum simulating the skin color of a human body; compared with a traditional light transmittance method, the method has the advantages that the dimension crossing from luminous flux measurement to image information fidelity evaluation is realized, and the accuracy, reliability and practicability of detection are remarkably improved.

An apparatus and a method for detecting a mounting state of a light pipe in a terminal are disclosed. The detection apparatus includes a fixture, a detection light source, and a light detection module. A light inlet path is formed inside the fixture, an opening that is of the light inlet path and that is exposed to the fixture is opposite to a mounting position of the light pipe, and the detection light source is disposed above the fixture. The light detection module is configured to determine the mounting state of the light pipe based on a luminous flux value of detection light. In cases in which the light pipe is properly mounted, the mounting position is deviated, the light pipe is not mounted, or the like, the luminous flux value of the detection light that is transmitted to the light detection module through the light inlet path varies accordingly.

The invention relates to a three-mirror anastigmat telescope, comprising at least a primary mirror (1), a secondary mirror (2) positioned in front of the primary mirror (1) such that the primary and secondary mirrors have optical surfaces (1.1, 2.1) opposite one another, a tertiary mirror (3) having an optical surface (3.1) opposite the optical surface (2.1) of the secondary mirror (2), and a first optronic sensor (10) positioned opposite the tertiary mirror (3). The telescope comprises a second optronic sensor (20) positioned behind the secondary mirror (2) and the optical surface of the secondary mirror (2.1) has a dichroic treatment (2') intended to separate an incident luminous flux reflected by the primary mirror (1) into a first luminous flux reflected towards the first optronic sensor (10) via the tertiary mirror (3) and a second luminous flux transmitted to the second optronic sensor (20), the first luminous flux and the second luminous flux being in different spectral bands and the secondary mirror (2) being transparent to the spectral band of the second luminous flux.

The application belongs to the technical field of automobile lighting and electric heating control, and discloses an intelligent thermal management and light efficiency cooperative control system of an automobile LED lamp module. The system comprises a microcontroller, in which a physical thermal model based on a thermal resistance network and a light efficiency-junction temperature mapping function are established. The ambient temperature, the vehicle speed signal and the driving current are taken as the input of the physical thermal model, the predicted junction temperature of the next control period is solved, and the predicted luminous flux decay amount is obtained by substituting the predicted junction temperature into the mapping function. When the predicted luminous flux decay amount exceeds the light efficiency maintenance threshold, the microcontroller dynamically generates a frequency reduction pulse width modulation driving signal according to the light efficiency priority weight before the junction temperature reaches the hardware safety limit, synchronously outputs a water pump speed regulating signal, and forms a front cooperative control link. The system eliminates the control lag caused by the thermal conduction delay of the temperature sensor, avoids the local thermal runaway of the chip, maintains the constant luminous flux output, and reduces the invalid start-stop frequency of the heat dissipation actuator.

The application relates to the technical field of LED lamp bead detection, and discloses an LED lamp bead light decay prediction method and system, which comprises the following steps: collecting the luminous flux, junction temperature and forward voltage of an LED lamp bead to obtain LED operation parameter data; performing first-order derivative and second-order derivative calculation on the LED operation parameter data to obtain parameter change rate data; performing composite threshold value detection on luminous flux drop events, temperature jump events and thermal resistance mutation events based on the parameter change rate data to obtain light decay event detection results; and generating lamp bead identification results including a thermal attenuation mode, an electromigration attenuation mode or a photochemical attenuation mode according to the light decay event detection results, in combination with carrier injection efficiency values, fluorescent powder quantum efficiency values and chip defect density values, the application drives physical parameter calculation and mode identification based on event detection results, realizes a technical transformation from passive response to active identification, and significantly improves the real-time performance and accuracy of LED light decay prediction.

The invention provides an intelligent induction dimming and color modulation method. The method comprises the following steps: 1, setting a scene mode; 2, light flux change is selected to be defined along with an illumination sensor or self-defined, and color temperature mode selection is changed along with time or self-defined; (3) if the automatic dimming mode is selected, the photosensitive sensor detects the environment brightness change and transmits the environment brightness change to the processor, the processor sends a signal to the dimming and color adjusting module in real time according to the selected brightness value, and then the brightness of the lamp is automatically adjusted; (2) if automatic color temperature adjustment is selected, the processor sends a signal to the dimming and color adjusting module and then the lamp along with the time change through combination of a photosensitive sensor signal and a time signal, so that the color temperature is changed along with the time change, and the color temperature change of sunlight in one day is simulated; and (3) if the fixed color temperature luminous flux is selected, the processor only sends a fixed signal to the dimming and color adjusting module, and the lamp only has the fixed color temperature and luminous flux.

The present application provides a method and an apparatus for calculating a duty cycle of a lighting, a terminal, and a storage medium. The method includes: determining a first expression formula of a chromaticity coordinate, a luminous flux and an input duty cycle of each path of three paths of a RGB color light source; calibrating, based on the first expression formula and tristimulus values of the three paths of the RGB color light source under a full current operation, a nonlinear transformation of the luminous flux, to obtain a first duty cycle value; and calibrating, based on the first duty cycle value and the first expression formula, a nonlinear transformation of the chromaticity coordinate, to obtain a second duty cycle value; and controlling displaying colors of the RGB color light source based on the second duty cycle value.

An LED white light source, comprising red-light LED lamp beads (11), green-light LED lamp beads (12), blue-light LED lamp beads (13) and white-light LED lamp beads (14), which are controlled independently of each other, wherein when the green-light LED lamp beads (12) are green-light chips, the ratio of the luminous fluxes of the red-light LED lamp beads (11), the green-light LED lamp beads (12), the blue-light LED lamp beads (13) and the white-light LED lamp beads (14) is 1.8-2.0:5.5-5.6:1:15-16; alternatively, when each green-light LED lamp bead (12) comprises a first light-emitting chip and a first phosphor that covers the first light-emitting chip, the ratio of the luminous fluxes of the red-light LED lamp beads (11), the green-light LED lamp beads (12), the blue-light LED lamp beads (13) and the white-light LED lamp beads (14) is 1.8-2.0:12-13:1:14-15. Upon testing, the white light source has high power consistency at different color temperatures, such that the technical problem of the light emission efficiency of existing LED white light sources needing to be improved is solved, thereby facilitating energy efficiency optimization.

The utility model discloses a kind of glass slits, which are divided into light-transmitting area (2) and non-light-transmitting area (1). The width of the light-transmitting area (2) is 15 or 30, and the light-transmitting area (2) is coated with an anti-reflection film with a transmittance of more than 96%. The non-light-transmitting area (1) is coated with an absorbing film with an absorption rate of more than 96%. The preparation method of the glass slit involves substrate processing, gluing, film coating, and peeling, etc. The light-transmitting area (2) of the glass slit has a transmittance of more than 96%, ensuring the luminous flux of the optical system. The non-light-transmitting area (1) uses an absorbing film, avoiding stray light introduced by multiple reflections of traditional chrome plating on optical lenses. The preparation method avoids the large size error of traditional laser cutting and the burr phenomenon of the slit, improving the production qualification rate of the slit and reducing the cost.

The application discloses a calibration matching method for atmosphere lamp user color, and belongs to the field of atmosphere lamp production technology.The method comprises the following steps: installing K PCBA boards on a lamp shell;measuring color coordinate values and luminous flux values of the atmosphere lamps;taking the color coordinate values and luminous flux values of any atmosphere lamp as calibration data, and calculating a pwm duty cycle;a controller controls a LED driver to drive the K atmosphere lamps to complete primary calibration;removing the PCBA board in any atmosphere lamp, and measuring the actual luminous flux value;comparing the actual luminous flux value with a target luminous flux value to obtain a ratio r;increasing the target luminous flux value Y_t by r times, combining the calibration data, and calculating a pwm target duty cycle;a controller controls a LED driver to drive the K atmosphere lamps to complete secondary calibration;measuring the color coordinate values and luminous flux values of the atmosphere lamps after calibration, and comparing the values with customer standards.The method realizes assembly user color adjustment of multiple styles of atmosphere lamps, meets the matching degree of the colorimetric value control of the atmosphere lamps and the real environment demand, greatly saves production time cost, and improves production efficiency.

The invention discloses a scanning type hyperspectral imaging device and method based on a linear gradient filter. The device sequentially comprises an imaging objective lens, a gradient filter assembly, a telecentric imaging lens group and a camera along the incident direction of a light path, during working, the one-dimensional linear displacement table drives the gradient filter assembly to perform linear scanning motion in the direction perpendicular to the optical axis, so that light in an imaging view field penetrates through band-pass filtering areas with different central wavelengths on the gradient filter in a time-sharing manner. The filtered monochromatic or narrow-band light is projected to a photosensitive target surface of the camera through the telecentric imaging lens group, and multiple frames of spectral images with different wavebands are continuously acquired. Collected sequence images are processed and reconstructed to form a hyperspectral three-dimensional data cube containing spatial information and spectral information. The system has the advantages of high imaging speed, high luminous flux, compact system structure, low cost and the like, and is suitable for hyperspectral data acquisition scenes with higher real-time requirements.

To provide a phosphor plate capable of obtaining a higher luminous flux in white light using a blue LED or LD.SOLUTION: A phosphor plate 1 includes a plate-shaped fired body 5 having a light incident surface 2 for receiving light and a light emission surface 3 for emitting the light received by the light incident surface, and a glass coating layer 4 formed on the light emission surface of the fired body, wherein the fired body includes (Y1-x-y, Gdx, Cey) 3Al5O12 particles (where 0.018 ≤ x ≤ 0.054 and 0.018 ≤ y ≤ 0.025) and Al2O3 particles, the mean particle size of both particles is 3.0 to 5.0 μ m, the concentration of the (Y1-x-y, Gdx, Cey) 3Al5O12 particles to the total of both particles is 15 to 25vol%, the thickness of the fired body is 90 to 160 μ m, the glass coating layer is formed of an inorganic glass coating material, and the roughness Ra of the glass coating layer is 0.05 to 0.4 μm.SELECTED DRAWING: Figure 1

The utility model discloses a kind of determination device of carbonyl iron in coal-based methyl acetate, including ultraviolet light source controller, the ultraviolet light source controller is connected to multiple ultraviolet lamp light sources by signal line, ultraviolet light source controller can simultaneously adjust control wattage, wavelength and luminous flux of multiple ultraviolet lamp light sources;Ultraviolet lamp light source is used to irradiate high-transmittance analysis dish, and special coating mirror surface passes reaction image in high-transmittance analysis dish to high-speed camera, and high-speed camera is connected with computer image analysis system.The utility model can realize multiple sample parallel detection, with the characteristics of small error, accurate control.

The application relates to a fixing device for fixing an LED module inside an integrating sphere and a luminous flux measuring system, comprising a connecting piece fixedly connected with a supporting rod inside the integrating sphere; the luminous flux measuring system is designed ingeniously, left clamping arms and right clamping arms are arranged on the two sides of a horizontal rod in a rotating mode, a first clamping space for placing an LED module is formed between the left clamping arms and the right clamping arms, various types of lamps can be quickly clamped through the cooperation of the left clamping arms and the right clamping arms, the problem that the measurement result is affected by the poor direction consistency caused by the fact that the LED module of the measured equipment is fixed by being bound with a rope is solved, the measurement accuracy is high, the quality of the LED module of the measured equipment can be evaluated, meanwhile, the installation steps are reduced, and the installation efficiency is improved.

The invention discloses a high-flux vacuum ultraviolet light source device, which belongs to the technical field of high-end analytical instrument components, and comprises a radio frequency power amplification excitation mechanism, a heat dissipation mechanism, a discharge medium gas circuit mechanism, a vacuum sealing mechanism and a light emitting mechanism, one end of the light-emitting mechanism is connected with the discharge medium gas circuit mechanism, the other end of the light-emitting mechanism is connected with the vacuum sealing mechanism, and a gas inlet pipe and a gas outlet pipe of the discharge medium gas circuit mechanism penetrate through the heat dissipation mechanism. The high-flux vacuum ultraviolet light source device has the advantages of being small in size, high in luminous flux, stable in output, long in service life and the like, and can be widely applied to the fields of mass spectrometry, spectral analysis, photoelectron spectroscopy analysis, chromatographic photoionization detectors, basic physical research and the like; and the requirement of a high-end analysis instrument on a high-performance vacuum ultraviolet light source is met.

The invention discloses a lighting module, a Fresnel lens design method and a display device. The lighting module comprises a substrate, a frame, a Fresnel lens and a light-emitting unit. The Fresnel lenses are installed on the frame and arranged on the light-emitting sides of the corresponding light-emitting units. Wherein the Fresnel lens comprises an incident surface and an emergent surface, and the emergent surface comprises a tooth surface which is provided with a central tooth and a plurality of concentric annular teeth; the tooth surface contours of the central tooth and the plurality of concentric annular teeth on the tooth surface are configured as follows: on the basis of an equal luminous flux principle, the incident light rays which come from the corresponding light emitting units and are emitted through the corresponding Fresnel lenses are divided, and the division comprises equal luminous flux division in a solid angle space; or performing equal luminous flux line angle division on different azimuth angles aiming at a target illumination area with a preset shape; and each divided part of luminous flux is guided to different parts of the target illumination area so as to realize uniform illumination. According to the embodiment of the invention, the illumination performance of the illumination module can be optimized.

The present application relates to a kind of low light transmittance high haze value modulation film environment under tobacco flavor modulation method, including tobacco harvesting, modulation shed building, weathering membrane selection, tobacco string into shed, tobacco modulation management, tobacco unloading, tobacco stack and cover steps.The present application adjusts traditional greenhouse film to low light transmittance high haze value weathering membrane, can block part of light flux, reduce ultraviolet transmittance, reduce tobacco illumination intensity, while increase humidity control ability in shed, avoid the problem that quality reduces when tobacco modulation light directly irradiates and microenvironment temperature and humidity are difficult to control, provide more suitable illumination intensity and controllable temperature and humidity microenvironment for tobacco flavor tobacco leaf that is worn by tobacco wearing machine, effectively solve the shortage of " sugar high alkali low " of yunnan tobacco flavor and the situation that more green and white smoke is generated by current modulation method, improve the internal quality and appearance quality of tobacco flavor modulation.

Provided is a nitride phosphor with which it is possible to obtain a higher luminous flux when constituting a light-emitting device. The nitride phosphor contains, in a composition, at least one group 2 element selected from the group consisting of Mg, Ca, Sr and Ba, Eu, Si, Al and N. The molar content of the Al in the composition is less than or equal to the molar content of the Sr in the composition, and the molar content of the N in the composition is less than or equal to the molar content of the Eu. The ratio of the total molar content of the group 2 element to the total molar content of Eu is 0.8 to 1.1, the ratio of the molar content of Eu is 0.002 to 0.08, the ratio of the molar content of Si is 0.8 to 1.2, and the ratio of the total molar content of Si and Al is 1.8 to 2.2. The nitride phosphor has an average aspect ratio, which is the ratio of the minor axis to the major axis, of from 0.72 to 0.77 (inclusive), and an average circularity of from 0.82 to 0.92 (inclusive).

The application discloses a kind of multi-lamp bead double light LED car headlamps, including lamp plate, reflector and glass lens.Reflector includes first reflector and the second reflector and third reflector of its far end, and the curvature radius of the reflecting surface of second reflector and third reflector is identical, and different from the curvature radius of the reflecting surface of first reflector, first, second and third lamp beads are respectively set on lamp plate with first, second and third reflector corresponding.The curvature radius of the reflecting surface of second reflector and third reflector is less than the curvature radius of the reflecting surface of first reflector.The application is by setting three-cup integrated reflector structure with different reflecting curvature radius, using different lamp beads to cooperate different reflector, improve far, near light light type uniformity and brightness, play good light supplement effect.It is also by setting angle limitation of second and third reflector, can obtain better light supplement light type and brightness, and avoid stray light, improve output luminous flux and light type uniformity.

The invention relates to a head-up display device (1) for vehicles comprising: - an image generation device (10) designed to generate a light beam (L); - an optical system (20) configured to project said light beam towards a partially transparent blade (70) and comprising a first mirror (21) arranged to reflect said light beam; - an optical sensor (60) designed to determine a luminous flux; and - a protection module (30) capable of controlling a reduction in the intensity of said light beam based on said luminous flux. According to the invention, a field of view (C) of said optical sensor is oriented towards said first mirror. (Shorthand figure: Fig. 1)

The invention provides a control method and device, a vehicle and a computer readable storage medium, and relates to the technical field of trailer equipment, the method is applied to an electric trailer hook, and the electric trailer hook comprises a shell and a first illumination module; the method comprises the following steps: acquiring environment state information and / or a user instruction; based on the environment state information and / or the user instruction, a target working mode of the electric trailer hook is determined, and the target working mode comprises a trailer connection auxiliary mode, a maintenance operation lighting mode or an outdoor scene lighting mode; according to the target working mode, the first lighting module is controlled to execute a lighting strategy matched with the first lighting module; wherein the illumination strategy comprises adjustment of one or more parameters of the luminous flux, the light beam shape, the light spot range, the illumination color temperature and the light output directivity of the first illumination module. According to the method, the lighting effect of the electric tow hook can be dynamically adjusted based on the lighting requirements of different scenes, so that the differentiated lighting requirements of a user in different scenes are met.

This invention relates to the field of light-emitting diode (LED) technology and discloses a full-spectrum healthy lighting LED and its phosphor formulation method. The method includes: S1: measuring the spectral radiant flux and phosphor conversion parameters of a blue LED chip; S2: calculating the green, yellow, and red light fluxes based on the spectral radiant flux and phosphor conversion parameters, and setting formulation constraint parameters; S3: calculating the spectral proportion parameter based on a first mass proportion and generating a second mass proportion; S4: weighing and mixing green, yellow, and red phosphors according to the second mass proportion to obtain a mixed phosphor; S5: mixing the mixed phosphor with a silicone substrate and then dotting it onto the surface of the blue LED chip for curing to obtain an LED device. This invention realizes the calculation and control of green, yellow, and red light fluxes, solving the technical problem of spectral discontinuity in traditional single phosphor schemes.

Disclosed is an intelligent greenhouse system, comprising a greenhouse, a ventilation and air exchange system, an active energy storage system, and an intelligent shading system disposed at a top of the greenhouse; the active energy storage system comprises an underground water tank and a heat exchange piping assembly; a plurality of heat-exchange air inlets are provided above the greenhouse, and a plurality of heat-exchange air outlets are provided below the greenhouse, wherein the plurality of heat-exchange air inlets and the plurality of heat-exchange air outlets are respectively connected to the heat exchange piping assembly; the intelligent shading system comprises a shading louver assembly disposed above a roof of the greenhouse, wherein the shading louver assembly automatically regulates photosynthetically active radiation within the greenhouse according to plant light requirements. The intelligent greenhouse system is capable of storing, in the form of stored energy, high temperatures generated in the greenhouse, and is able to both reasonably regulate the temperature inside the greenhouse and acquire heat energy, making the entire greenhouse more environmentally friendly and low-energy consuming, thereby saving energy and allowing for a self-contained ecosystem capable of self-sustaining circulation.

The invention discloses a measuring system and a measuring method applied to a display screen, the display screen is provided with a test pattern, and the measuring system comprises a high-speed deflecting mirror, a photoelectric sensor and a processor. The high-speed deflecting mirror directly faces a test pattern on the display screen, and the high-speed deflecting mirror is used for rotating according to a preset angle and enabling the test pattern to deflect through a light beam of the high-speed deflecting mirror; the photoelectric sensor is connected with the high-speed deflecting mirror and is used for collecting luminous flux data of the light beams deflected by the high-speed deflecting mirror; the processor is in communication connection with the photoelectric sensor and is used for receiving the luminous flux data and obtaining the attenuation rate slope of the test pattern according to the luminous flux data, and the attenuation rate slope is used for representing the halo intensity of the test pattern. Through the cooperation of the high-speed deflecting mirror, the photoelectric sensor and the processor, the halo intensity of a test pattern is quantified more accurately, meanwhile, the time of single measurement is greatly shortened, and the detection efficiency of a product is improved.

A biological fluid information acquisition apparatus includes a light source, a prism, a first light receiving element, a second light receiving element, a differential circuit, and a signal processing unit. The prism has a first boundary face that branches a laser beam emitted from the light source into a first luminous flux and a second luminous flux, a second boundary face that totally reflects the second luminous flux, a third boundary face that totally reflects the second luminous flux reflected by the second boundary face, and a fourth boundary face emitting the second luminous flux reflected by the third boundary face, and, when a width direction of the biological fluid information acquisition apparatus is an X direction and a thickness direction of the biological fluid information acquisition apparatus orthogonal to the X direction is a Y direction, an interval between the second boundary face and the third boundary face in the Y direction is shorter than an interval between the first boundary face and the fourth boundary face in the X direction.