75results about How to "Improve light collection efficiency" patented technology

An imaging device for biochemical or medical samples, the pulse mode light source of which incorporates flash lamps and a rotating mirror in an inclined position, the said mirror reflecting the light emitted by each flash lamp in turn along the same optical path to the sample. The flash lamps are switched on alternately in phases and synchronised with the rotating mirror and the emission light chopper, which comprises two rotating discs. The turning mirror directs the light at the sample from above and/or below, in which case a double-acting transparent scattering plate can be used.

A reflective fluorescent glass light conversion component, including three layers of materials: a glass substrate, a reflector glass coating and a fluorescent glass coating; the reflector glass coating is the powder of glass B with a mass ratio of 150:1 to 100:150 Composition with reflector C, fluorescent glass coating The glass coating containing phosphor D is sintered on the glass substrate, and the thickness of the reflector glass coating and the fluorescent glass coating is 0.3-3mm respectively. The reflector C is an insulator with a large optical gap, and its corresponding optical absorption wavelength is below 420 nanometers; the color of the external light of the reflector C is white. The preparation steps are as follows: firstly, a reflective coating is prepared by mixing wide-bandgap reflector powder and low-melting glass powder on the glass substrate, and then a layer of fluorescent glass coating is prepared on the glass substrate, and then the reflective coating and the The fluorescent glass coating is integrated into the glass substrate.

The present invention relates to a pixellated detector with an enhanced structure to enable easy pixel identification even with high light output at crystal edges. A half-pixel shift between scintillator crystals (50) and detector pixels (12) enables the identification of a crystal (50) from four detector pixels (12) instead of nine pixels in case of optical crosstalk. Glass plates without any mechanical structuring may be used as a common substrate (60) for detectors and scintillators.

The invention provides a transmission imaging device and method based on a tera-hertz quantum device. The transmission imaging device comprises a light source part, an optical path part and a detection part, wherein the light source part comprises a driving power supply, a first cold head, a first heat sink arranged in the first cold head, a tera-hertz quantum cascaded laser arranged on the first heat sink and a first polyethylene window arranged on the first cold head; the optical path part comprises a first off-axis parabolic mirror, a second off-axis parabolic mirror, a two-dimensional electric translation platform, a third off-axis parabolic mirror and a fourth off-axis parabolic mirror; and the detection part comprises a second cold head, a second polyethylene window arranged on the second cold head, a second heat sink arranged in the second cold head, a tera-hertz quantum trap detector arranged on the second head sink, a signal processing circuit, an oscilloscope and a computer. The device and the method have the advantages that: an adopted tera-hertz radiation source can work in the pulse mode; and due to the adoption of the tera-hertz quantum trap detector serving as a signal detector, the imaging speed of a system can be increased effectively, and the imaging quality can be enhanced.

The invention discloses a packaging method for a cerium-doped halogenated lanthanum scintillation crystal. The packaging method is characterized in that the scintillation crystal sequentially undergoes grinding (to remove a corrosion layer), polishing and surface roughness in a hypoxia dry environment; a reflecting surface of the crystal and a reflection material form a diffuse reflection surface, a light-emitting surface and a high-refraction-rate optical coupling glue form a light-emitting port, and the optimum state of the crystal light-emitting surface is of a sawtooth-shaped optical microstructure; a scintillation crystal packaging structure which is resistant to oscillation, temperature shock and damp is designed; and three layers of composite protecting structures comprising a rigid sleeve pipe, a foaming heat-insulating buffer layer and a casing are arranged. An optical coupling agent at the front end of the crystal and an elastic gasket at the rear end of the crystal are made of soft elastic materials. A gap is reserved between a rear cover and a rigid gasket, the heat-insulating effect is improved, and a double-way compound sealant is adopted to adhere the position of a joint of the casing.

The invention provides an amorphous silicon flat-panel detector and a preparation method thereof. The method comprises the following steps: preparing an image sensor array on a substrate, and forming a planar focusing microlens material layer on the image sensor array; forming a photoresist layer on the focusing microlens material layer; carrying out exposure and development on the photoresist layer and forming a photoresist array, photoresist units in the photoresist array being in one-to-one correspondence with pixel units in the image sensor array; enabling each photoresist unit to be in a spherical crown shape through hot melting; enabling the spherical crown shape to be transferred to the focusing microlens material layer through etching, and forming a focusing microlens array; and forming a scintillation layer on the focusing microlens array. Through light condensation effect, more light beams are allowed to enter a light sensitive area of an image sensor, so that light collecting efficiency of the image sensor array is improved, and sensitivity of the amorphous silicon flat-panel detector is improved; and meanwhile, through convergence effect, optical crosstalk between adjacent pixels is reduced, and spatial resolution of the amorphous silicon flat-panel detector is improved.

A LED lamp and a light effect improving method thereof. A bulb shell (2) is covered on LED beads (3), and is mounted in a reflection cup (1). The bulb shell (2) is used for processing a primary optical process for the light emitted by the LED beads (3). The reflection cup (1) is used for processing a secondary optical process for the light which is subjected to the primary optical process performed by the bulb shell (2). By the functions such as refraction, scattering, diffusion and the like of the bulb shell (2), the primary emergent light emitted from the LED beads (3) is subject to the primary optical process such as mixing, scattering and so on, so as to realize the treatment effect that the light is emitted from the three-dimensional surface of the bulb shell (2). The reflection cup (1) performs the secondary optical process, so as to reflect the scattering light within a certain angle range.

A tunable optical filter is disclosed having an input port, a beam translator for translating input and output optical beams, an element having optical power for collimating the translated beam, a reflective wavelength dispersive element, and an output port. The beam translator can include a tiltable MEMS mirror coupled to an angle-to-offset optical element. An output port can be extended into a plurality of egress ports, each receiving a fraction of the scanned optical spectrum. A multi-path scanning optical spectrometer can be used as an optical channel monitor for monitoring performance of a wavelength selective switch, or for other tasks.

The invention relates to an inlaying source device used for scintillation crystal detector gain automatic control. The inlaying source device comprises a plastic scintillator barrel, a plastic scintillator cylinder and an epoxy resin layer. A 241Am radioactive source is adhered on the bottom part of the plastic scintillator barrel. The plastic scintillator cylinder is plugged in the plastic scintillator barrel and abutted against the 241Am radioactive source so that a plastic scintillator is formed. A reflective coating layer is arranged at the external side of the plastic scintillator. The epoxy resin layer is connected on the top part of the plastic scintillator cylinder in a sealing way and used for sealing the 241Am radioactive source in the plastic scintillator. According to the inlaying source device used for scintillation crystal detector gain automatic control, the manufacturing process of the 241Am radioactive source is simple and easy to realize; and light collection efficiency is high so that signal-to-noise ratio is effectively enhanced and detection efficiency of alpha particles is greatly enhanced.

The invention provides an integrated electrochemical luminescence detecting pond. The integrated electrochemical luminescence detecting pond comprises a lower pond body and an upper pond body, wherein the upper pond body is arranged on the lower pond body; the upper pond body and the lower pond body are fixed detachably; a silica gel pad is arranged on the upper end surface of the lower pond body; an organic glass module is arranged on the silica gel pad; a fluid groove is formed in the silica gel pad; an auxiliary electrode and a working electrode are respectively arranged on the top and the bottom of the silica gel pad; an operating groove which communicates with the outside is formed in one side of the inside of the lower pond body; a second operating groove is formed in the other side of the lower pond body; a reference electrode which communicates with an outlet flow path is arranged in the lower pond body; a control device is arranged in a cavity; and a magnet is placed in the control device. By the scheme, the working electrode and the auxiliary electrode are inlaid structures, good airtightness is guaranteed, the distance between solution and a magnet and the distance between a photoelectric detection component and a luminescence point are minimum, and by the design of the annular auxiliary electrode, uniform distribution of electric fields of the working electrode can be guaranteed.

The invention relates to the technical field of automobile lighting, and provides an automobile headlamp which comprises a low-beam incident optical system for generating a low-beam light beam, a distance light incident optical system used for generating a distance light beam, a heat dissipation substrate having one side provided with the low-beam incident optical system and the distance light incident optical system, and a light emitting device used for collecting the low-beam light beam and the distance light beam and outputting the low-beam light beam and the high-beam light beam. The low-beam light beam and the distance light beam respectively form a first light area and a second light area on the light incident surface of the light emitting device, the second light area is arranged above the first light area, and the first light area and the second light area are partially overlapped; and a distance light and low beam conversion device is arranged between the heat dissipation substrate and the light emitting device. According to the invention, local heat accumulation of the heat dissipation substrate can be avoided, the heat dissipation efficiency is improved, the light collection rate of the light emitting device can be improved, and the ultra-long-distance lighting effect can be achieved.

The invention discloses a water-cooled light-concentrating optical fiber probe used for a stable section of a hypersonic-speed low-density wind tunnel. Optical glass, a convex lens and an optical fiber are sequentially installed on the axis of the optical fiber probe from front to back, and sealing rings I are installed on both sides of the optical glass; a protective sleeve is installed outside the convex lens and the optical fiber in a sleeving mode, the front end of the protective sleeve closely abuts against the sealing ring I behind the optical glass, and a boss is arranged at the rear end of the protective sleeve; a shell sleeves the optical glass and the protective sleeve and is internally provided with a cooling water channel. The cooling water channel is connected with an externally-arranged cooling water system through a cooling water connector installed on the shell. The rear end of the shell and the boss at the rear end of the protective sleeve are connected by a connectingnut, and the rear end of the shell and the boss at the rear end of the protective sleeve are sealed by a seal ring III; and a step is arranged on the middle part of the shell, and a nut is installedat the step in a sleeving mode. The optical fiber probe is simple in structure and high in reliability, and can lead light generated by high-temperature and high-pressure gas in the stable section ofthe hypersonic-speed low-density wind tunnel to an optical measuring instrument.

The invention relates to a laser light source and a laser projector, and belongs to the field of laser projection display. The laser light source comprises a blue laser, a light gathering device and afluorescent device, wherein the light gathering device is positioned between the blue laser and the fluorescent device; the blue laser is used for emitting blue laser; the light condensing device isused for refracting the received blue laser to obtain non-collimated blue laser and transmitting the non-collimated blue laser to the fluorescent device; the fluorescent device is of a tubular structure, wherein at least part of the inner surface of the fluorescent device is a fluorescent area; the fluorescent area is used for emitting fluorescent light under excitation of blue laser; and the tubewall of the fluorescent device is used for reflecting the received blue laser and the fluorescent light. The fluorescent device is used for outputting light with different colors. The actual excitation efficiency of the fluorescent powder is improved. The invention is used for designing the laser light source.

The present disclosure relates to an optical sensing module, an optical sensing accessory, and an optical sensing device. A reflective optical sensor module comprises a light source and a first encapsulant, a photodetector and a second encapsulant, an electrode and a substrate. The light source is configured to convert electric power into radiant energy and to emit light to an object surface. The photodetector is configured to receive the light from an object surface and to convert radiant energy into electrical current or voltage. The electrode is configured to detect an external circuit formed by the contact with an object surface. The optical sensing accessory and the optical sensing device comprise the reflective optical sensor module and other electronic modules to have further applications.

The embodiment of the invention discloses a light source assembly and a projection device, and belongs to the technical field of projection. The light source assembly comprises a laser for emitting a first light beam and a second light beam; a light combination assembly which comprises a reflection area and a transmission area, wherein the transmission area comprises a first transmission area and a second transmission area; the first light beam sequentially passes through a first lens, the first transmission area and a third lens and enters a third lens group; the second light beam sequentially passes through a second lens, the second transmission area and a fourth lens and enters the third lens group; the third lens group converges the incident first light beam and the incident second light beam and emits the light beams to a wavelength conversion device; and the wavelength conversion device which reflects or converts the incident light beam into fluorescent light and emits the fluorescent light to the third lens group, wherein the third lens group collimates the light beam and then emits the light beam to a reflection area of the light combination assembly, and the light beam is reflected to a light emitting direction by the reflection area. According to the embodiment of the invention, the light receiving efficiency of the light source assembly is improved.

The invention belongs to the technical field of radioactive pollution monitoring, and discloses a beta surface polluted-position resolution measurement method. The method is used for detecting the beta radioactive surface pollution by utilizing a beta surface polluted-position resolution detector, and comprises the following steps of acquiring a position relation standard curve and measuring the beta radioactive surface pollution. The method has the advantages of simplicity, low detection lower limit, large detection sensitive area, high measuring speed and capability of accurately measuring polluted-position information.

The invention discloses a beta-ray position detection device based on scintillating fibers. The device comprises a collimator and a position sensitive detector, wherein the collimator is used for allowing beta rays perpendicular to the incident position sensitive detector to strike the scintillating fibers in the position sensitive detector by virtue of the incident beta-rays perpendicular to the plane direction of the position sensitive detector; and the position sensitive detector is positioned in the rear of the collimator and is used for detecting the positions of the vertical incidence beta rays passing through the collimator. The invention also discloses a position detection method. According to the device and method disclosed by the invention, the two-dimensional position information of the beta rays can be simultaneously acquired by adopting an optical fiber fabric; light loss in light collection can be reduced, so that a large-area beta-ray position sensitive detector is possible; the light collection efficiency is improved, and position resolution and energy resolution are promoted; and moreover, the number of photomultipliers is greatly saved, and the cost is reduced.

The invention relates to a silver-copper bimetallic thin film for a light anode and a laser-induced membrane-changing method. In the silver-copper bimetallic thin film, the molar ratio of silver to copper is (1-7):(1-8). Dye sensitized solar cell light anode with an Ag-Cu bimetallic-TiO2 composite structure is prepared by substituting a laser-induced membrane-changing preparation method for an electron beam photoetching method and substituting an Ag-Cu bimetallic material for Au to serve as a surface plasma medium. A metallic titanium-supported titanium oxide membrane serves as a receiving substrate; the silver-copper thin film serves as a source matrix; the metallic titanium-supported titanium oxide membrane is placed below indium tin oxide (ITO) glass where the silver-copper thin film is deposited to perform laser-induced membrane changing. By the silver-copper bimetallic thin film for the light anode and the laser-induced membrane-changing method, dependence on high-cost noble metal in the prior art can be reduced, photovoltaic property of the dye sensitized solar cell is further improved, solar energy can be utilized to a larger degree, energy pressure can be relieved, and environment-friendly and low-cost development of the dye sensitized solar cell technique can be further promoted.

The invention discloses an OMEGA-2.0 space solar power station adopting optical-mechanical-electrical integrated design, which comprises a spherical crown condenser, the appearance of the spherical crown condenser is a partial spherical surface shape formed by using a spherical surface primary reflection area by utilizing a spherical surface condensation principle, the backlight side of the spherical crown condenser is connected with an electric propeller, the focusing position of the center line of the spherical crown condenser is connected with a photovoltaic cell array, and the photovoltaic cell array is connected with a power source. The end part of the photovoltaic cell array is connected with a space bionic radiator penetrating through the spherical crown condenser, and the electric output end of the photovoltaic cell array is connected with an omnidirectional transmitting antenna; problems existing in an original scheme are perfectly eliminated, the problem of concave transmission and convex reflection of a film is avoided, the requirement of the film for microwave transparency is eliminated, the problem that the reliability of high-voltage huge-power electric energy transmission of an electric brush is low is solved, and the device has the advantages of being simple in structure, easy to achieve, high in light collection rate and easy to control.