46results about How to "Reduce light energy" patented technology

A reflectance sensor which can be applied to a patient in a manner which reduces the light energy reaching the detector without first being attenuated by the tissue at the measurement site. Moreover, the reflectance sensor includes emitting devices adapted for use in legacy patient monitoring systems.

This disclosure concerns methods and apparatus for interferometric spectroscopic measurements of particles with higher signal to noise ratio utilizing an infrared light beam that is split into two beams. At least one beam may be directed through a measurement volume containing a sample including a medium. The two beams may then be recombined and measured by a detector. The phase differential between the two beams may be selected to provide destructive interference when no particle is present in the measurement volume. A sample including medium with a particle is introduced to the measurement volume and the detected change resulting from at least one of resonant mid-infrared absorption, non-resonant mid-infrared absorption, and scattering by the particle may be used to determine a property of the particle. A wide range of properties of particles may be determined, wherein the particles may include living cells.

A surface mounting device-type light emitting diode (SMD-type LED) comprises a package housing one or more pairs of electrodes therein, the package having a predetermined space in the center thereof and a light-emission window which is opened so that light is emitted through the light-emission window; a lens formed on the package so as to cover the light-emission window; an LED chip formed on an electrode inside the package; a wire for electrically connecting the LED chip and the electrode; and a phosphor-mixed layer formed on the surface of the lens adjacent to the light-emission window.

Systems and methods are provided for capture control of video data from a capsule camera system having an on-board storage or wireless transmission. The capsule camera system moves through the GI tract under the action of peristalsis and records images of the intestinal walls. For some periods of time, the capsule camera system may move very slowly and there are little differences in the image data between different frames. These frames can be designated for discard to conserve storage space or conserve power. A capsule control processing unit is incorporated to evaluate motion metric based on image data associated with a current frame and a previous frame. A decision is made based on a profile of the motion metric to select an operation mode from a group comprising Capture Mode and Conservation Mode. The capsule camera system is then operated according to the selected operation mode.

The invention relates to a light coupling solid-core light cone. The light coupling solid-core light cone is made of quartz materials and has two end surfaces with the different diameters, and a bus of a cone body of the light core consists of three sections, which is a straight line, an arbitrary smooth curve and the straight line respectively. The light coupling solid-core light cone of the invention has good light transmission performance, small light energy loss, simple and reasonable structure, easy manufacture and low cost, thus being applicable to the light beam receiving, aggregation of free-space light, coupling between a light source and an optical fiber and other occasions in the wireless optical communication.

The invention belongs to the field of 3D detection and measurement, and particularly relates to a laser line scanning 3D detection method and system based on a scanning galvanometer and an event camera. The method comprises the following steps: the laser line is reflected to an object to be detected by the scanning galvanometer, so that laser line scanning is achieved; the event camera is adoptedto collect laser line signal information reflected from the object to be measured, and pixel points with changed brightness on the object to be measured and corresponding time points are stored and output; the position coordinate of the space point of the object to be detected scanned by the laser line at the moment is calculated through the relative position between the scanning galvanometer andthe event camera, the pixel point output in the step 2 and the scanning galvanometer rotation angle corresponding to the moment point corresponding to the pixel point; the steps are repeated to complete all space point coordinates of the object to be measured so as to obtain 3D point cloud data of the object to be measured, thereby solving the limitations of frame rate, resolution and illuminationresistance in the current 3D scheme.

A surface mounting device-type light emitting diode (SMD-type LED) comprises a package housing one or more pairs of electrodes therein, the package having a predetermined space in the center thereof and a light-emission window which is opened so that light is emitted through the light-emission window; a lens formed on the package so as to cover the light-emission window; an LED chip formed on an electrode inside the package; a wire for electrically connecting the LED chip and the electrode; and a phosphor-mixed layer formed on the surface of the lens adjacent to the light-emission window.

The invention discloses a display panel, comprising a first substrate which comprises a first base plate and a reflection structure positioned on the first base plate, a second substrate and a photosensitive seal adhesive which is arranged between the first substrate and the second substrate for connecting the first substrate and the second substrate, wherein the at least one reflection structure is positioned between the photosensitive seal adhesive and the first base plate. The invention mainly provides a display panel and a method for making the same in the process of solidification of photosensitive seal adhesives for increasing the utilization rate of light and reducing the needed light ray energy.

The invention relates to an optical fiber wavelength division multiplexer based on a photonic crystal fiber structure; the optical fiber wavelength division multiplexer is a three-core photonic crystal fiber, comprising a matrix material, a cladding formed by air vents and three fiber cores. The middle of the optical fiber is provided with a fiber core; each side of the fiber core at the middle of the fiber is provided with a fiber core; the three fiber cores have different refractive index distribution; the basic mode of the fiber core at the middle has the same effective refractive index with the fiber core of one side at and only at a certain wavelength position Lambada1, and the basic mode of the fiber core at the middle has the same effective refractive index with the fiber core of the other side at and only at another certain wavelength position Lambada2. The wavelength division multiplexer can separate the optical signals including Lambada1 and Lambada2 input by the fiber core at the middle, and output the signals respectively from the left fiber core and the right fiber core. The fiber multiplexer is characterized by having smaller size and large isolation, allowing the fiber length to have relatively large manufacturing error, realizing mass production, outputting the light from two fiber cores with larger gap, facilitating the optical coupling to other optical fibers, etc.

The present invention is liquid or solid fluorescent material composition comprising 4-methyl-3-cyan-2, 6-bis (3, 5-dimethyl-1-pyrazolyl) pyridine and RE ion Eu3+ or Tb3+. The new fluorescent material may be applied as fluorescent probe, etc in biochemical and chemical analysis.

A liquid discharge apparatus includes: a head unit that has a nozzle array in which a plurality of nozzles are arranged, that discharges a liquid from each of the plurality of nozzles, and that causes liquid columns to extend downwardly; a liquid droplet generating unit that irradiates at least the two liquid columns with a laser beam in a direction obliquely intersecting with the arrangement direction when viewed from the center of the nozzle array and that separates liquid droplets from the liquid column; and a direction changing unit that applies energy to the liquid droplets and changes flying directions of the liquid droplets.

The invention provides a laser echo processing method and system. The method comprises the following steps of: reflecting a laser beam by an obstacle to form an echo optical signal; converting the echo optical signal into an echo pulse electric signal; amplifying the echo pulse electric signal and carrying out full-waveform sampling; and carrying out echo peak extraction on the sampling data afterthe full-waveform sampling, and comparing echo peak data and threshold data to generate two paths of control signals, wherein one path controls light emitting energy of the laser beam and the other path controls an amplification factor of the echo pulse electric signal. When the echo peak data is larger than a threshold data upper limit value, the light emitting energy of the laser beam or the amplification factor of the echo pulse electric signal is reduced; when the echo peak data is smaller than a threshold data lower limit value, the light emitting energy of the laser beam or the amplification factor of the echo pulse electric signal is increased. Therefore, the amplitude of the echo signals is more stable while the signal to noise ratio of the echo signals is maximized, the quality of the echo signals is improved, and the laser ranging performance is improved.

The invention discloses a micro solid-state laser module, which comprises the following main elements: a solid laser, a wavelength converter, a light splitting device and an optical detector, whereinthe solid laser is used for emitting the laser; the wavelength converter is used for converting the wavelength of the laser into lasers with different wavelengths, such as green light, according to afrequency doubling principle; the light splitting device, such as a prism, is arranged behind the wavelength converter and is used for splitting the lasers after the conversion into two light beams, namely the first light beam is that a main light beam contains most of the power and can vertically outward emit to become a main output light source, and the second light beam passes through the lightsplitting device, such as the prism, and enters the optical detector; the optical detector is used for detecting the optical power of the second light beam; the light splitting device is utilized toensure that all the elements can be packaged on one plane for treatment so as to be favourable for being packaged in a smaller TO-can package; and the compensating correction can also be performed bydirectly sensing the laser obtained after the conversion of the wavelength converter through the optical detector to ensure that the error of feedback compensation is minimum and is far superior to the conventional feedback mode.

An inexpensive projection lens unit in a rear projection type image display system, having a short focal distance (wide angle of viewing field), high focus and high contrast, and as well, including a power lens made of a glass material having a high refractive index in a range from 1.63 to 1.70 and an Abbe's number of not less than 50 with an optimized incident and emergent configuration in order to satisfactorily correct aberration with a enhanced focusing performance even with a shortened focal distance. Further, the power lens having a high refractive index can exhibit a high power, and accordingly, can carry out satisfactory aberration correction by optimizing the aspheric degree of a plastic lens even though the length of back focus is increased for enhancing the contrast.

The invention relates to a heavy metal detector with switching function and good detection effect. The heavy metal detector comprises a base, a protective cover, a switching mechanism and a cleaning mechanism, the switching mechanism comprises an isolation plate, a glass plate, a housing, a conveyor belt, a conductive component, a second motor, two rotating rollers, at least two hollow cathode lamps and at least two contacts, the cleaning mechanism comprises a guide rail, a moving seat, absorbent cotton, a driving component and two supporting components, wherein the conductive component comprises a sliding rod, an elastic sheet, two first springs and two moving sleeves, in the heavy metal detector with a switching function and a good detection effect, the switching between the hollow cathode lamps can be achieved through the switching mechanism, so that the heavy metal detector can detect different elements, the working efficiency of the heavy metal detector is improved, the glass plate can be cleaned through the cleaning mechanism, the decay of the energy of the hollow cathode lamps can be weakened, and the detection effect of the heavy metal detector can be improved.

The invention provides an orthographic projection screen, in particular an orthographic projection screen with high gain, high contrast and no sensitivity to ambient light. The screen also has the characteristics of high uniformity, no glare, no moire fringe, ultrathin property and high color saturation. The invention also provides a method for manufacturing the screen by adopting photoetching technology, in particular a method for scanning and exposing a photosensing material by utilizing a binary pattern and forming a large-area microrelief structure by performing wet etching on the surface of the photosensing material.

The invention relates to the field of liquid crystal display and discloses a liquid crystal display structure which comprises a backlight module, a lower-layer polaroid, a thin film transistor matrix,a liquid crystal and an upper-layer polaroid and further comprises an ultraviolet source, a quantum dot matrix layer and a microlens array layer. The ultraviolet source is positioned on the side faceof the backlight module, the backlight module, the quantum dot matrix layer, the microlens array layer, the lower-layer polaroid, the thin film transistor matrix, the liquid crystal and the upper-layer polaroid are sequentially arranged in a laminated manner, a microlens has corresponding quantum dot matters in a direction perpendicular to lamination, a refractive portion of the microlens enablesrefracted RGB color light to be perpendicular to the lamination direction. A quantum dot matrix layer is arranged at the bottom, RGB color is emitted by controlling quantum dot size, the microlens isadopted for one-way emission of the RGB color, color filters in conventional methods are omitted, and light using efficiency is improved; on the premise of same power consumption, screen using duration or brightness of the display screen is improved.

There are provided a solder ball deforming step of mechanically deforming a ball to break an oxide film of a surface thereof and to expose a nonoxide surface and a solder melting step of heating and melting the deformed solder ball through energy irradiation in a state where the deformed solder ball is mounted on joint units of a loaded work. The solder ball deforming step mechanically deforms the solder ball to form at least two orthogonal contact surfaces in contact with the joint surfaces of the joint units.

The LED package structure of the invention includes a substrate (1), an LED chip (2) mounted on the substrate (1) and a lens (3) covering the LED chip (2). A light penetrable film (4) whose refractive index is between those of the lens (3) and LED chip (2) is formed between the LED chip (2) and lens (3). The light penetrable film (4) is formed on the inner surface of the lens (3) facing the LED chip (2) in advance. The lens (3) is applied with hot pressing while the lens (3) is packaged so as to make the light penetrable film (4) coated on the LED chip (2).

A laser and a laser output head (100). The laser output head (100) comprises a water-cooling assembly internally mounted with a laser energy transfer component and performing water cooling on the laser energy transfer component to dissipate heat. The water-cooling assembly comprises a housing (1) and a water-cooled member (13). The water-cooled member (13) is accommodated in the housing (1). The outer wall of the water-cooled member (13) is formed with cooling grooves (131, 132) of a double helix structure. The two cooling grooves (131, 132) are communicated at one end, and a water inlet port and a water outlet port are respectively formed at the other end. The water-cooled member (13) is abutted against and fastened to the inner wall of the housing (1) by means of a convex portion (130), forming the cooling grooves (131, 132), on the outer wall of the water-cooled member (13). The contact area between the cooling water and the water-cooled member (13) is increased, and the heat dissipation efficiency can be improved so that the heat is dissipated timely, and the problem of burning an optical fiber (21) or the laser can be effectively prevented due to the strong return light.

The invention discloses a method for improving the anti-interception probability between a satellite and an underwater moving target, which adopts a multi-satellite combined scanning mode and a multi-aperture diversity receiving mode of the underwater moving target. Multi-satellite joint scanning can reduce the interception rate by reducing the light energy emitted from each satellite on the premise that the same light intensity is received by the receiving underwater moving target. Multi-aperture diversity reception on the submarine can combine the light energy of multiple satellites downstream to reach the threshold intensity required by the detector, thus ensuring the success of signal reception under the condition of multi-satellite combination scanning weak signal. The advantages of this scheme are mainly embodied in two aspects: when the total energy received by multi-satellite diversity is larger than that received by traditional single-satellite diversity scheme, the signal-to-noise ratio is improved; in multi-satellite and multi-propagation paths, there is the probability of satellite failure or optical path blocking, and the diversity reception of multi-path is not affected by the loss of individual links, which improves the probability of link connection.

The invention relates to the technical field of myopia prevention and control, in particular to a phototherapy device for myopia prevention and control, which comprises a shell, a light source and a light path module are arranged in the shell, and light emitted by the light source passes through the light path module and then is emitted to the macular position of eyeballs of a patient is weakened. Light emitted by the light source is projected to the retina through the light path module, blood flow and blood supply are increased after the choroid below the retina is irradiated by the red light with proper intensity, the original atrophic choroid and retina are restored, sclera hypoxia is fully supplemented, and therefore myopia is effectively prevented and controlled. Meanwhile, as choroid distribution at the macular position is denser than that of other parts and is more sensitive to light, the light path module is designed in a targeted manner, and energy of light emitted to the macular of the eyeball of the patient is weakened through different modes such as shielding, scattering, reflection and distribution of light guide points, so that the treatment effect of the macular macular is improved. Damage and calcification to macules in the process of using the phototherapy device for myopia prevention and control for a long time are avoided.

In the case of a method for producing a liquid-tight connection between layers of material, in particular textile fabrics, an adhesive layer of an additional sealing strip that seals the layers of material is melted by means of a laser bean. After that, the sealing strip is connected to the layers of material. A relative movement takes place between the laser beam and the sealing strip.

The invention provides an LED chip assembly, a manufacturing method thereof, an LED device and a manufacturing method of the LED device. Inverted LED chips are arranged on the front face of a bonding film, and the positive electrode and the negative electrode of each LED inverted chip are bonded to the front face of the bonding film; a first adhesive layer is formed on the front surface of the adhesive film, wherein the first adhesive layer is used for covering and packaging the flip LED chips together; a second adhesive layer used for reducing light energy emitted from the light-emitting surfaces of the front faces of the LED chips is formed on the first adhesive layer, and the second adhesive layer at least partially covers the light-emitting surfaces of the front faces of the flip LED chips and does not cover the first adhesive layer between the adjacent LED chips; and the first adhesive layer is cut to obtain a plurality of LED chip assemblies. The second adhesive layer used for reducing light energy is formed on the front surface of each LED flip chip, so that the difference between the light energy in the forward normal direction of the flip LED chips and the light energy of the four side surfaces can be reduced, and the uniformity of light emitting colors is improved.

The invention belongs to the field of optical devices. The problem that an existing infrared window material is not high in laser energy threshold value, and consequently the material is prone to damage is solved. The invention discloses an intelligent infrared light switch for an infrared window material and a manufacturing method, the working wavelength is infrared light, and the intelligent infrared light switch is characterized by comprising an infrared filter layer, a semiconductor-metal phase change material layer and a transparent substrate layer in the working wavelength in sequence inthe light propagation direction; the infrared filter layer is used for shielding light of a wave band outside the working wavelength and enabling infrared light of the working wavelength to pass through; when the temperature of the semiconductor-metal phase change material layer is lower than the phase change threshold value, the semiconductor-metal phase change material layer is in a semiconductor state, infrared light with the working wavelength passes through, when the temperature of the semiconductor-metal phase change material layer is higher than the phase change threshold value, the semiconductor-metal phase change material layer is in a metal state, and infrared light with the working wavelength cannot pass through. By using the technical scheme, the incident light waveband of the specific infrared light can be intelligently adjusted.

The invention discloses an optical subassembly for receiving optical module signals. The light receiving subassembly comprises an optical fiber connecting sleeve for connecting optical fibers, wherein the optical fiber connecting sleeve is provided with a through hole; and a filling block made of an optical transparent material is arranged at the through hole and is matched with the through hole. According to the light receiving subassembly, the filling block made of the transparent material is arranged at the through hole of the optical fiber connecting sleeve, light passes through the filling block and is transmitted to the air, the refractive index of the filling block is close to that of an optical fiber, the reflectivity of the light back to the optical fibers through an optical interface where the filling block is contacted with the optical fiber is low, namely the optical energy returning to the optical fiber is reduced, and the optical communication quality is improved.