1274results about How to "Improve light energy utilization" patented technology

The invention relates to a light guide plate, comprising a light inputting face, a light outputting face connected with the light inputting face and a reflection face opposite to the light outputting face. Whereinto, at least an extrusive diffusion part is set on the light inputting face on the light guide plate. A reflection hole is set at one side of the reflection face of light guide plate by the light diffusion part. The invention also provides a backlight module, comprising a light guide plate. The light guide plate comprises a light inputting face, a light outputting face connected with the light inputting face, a reflection face opposite to the light outputting face and at least a light source with lighting face. The light source is set at one side of light inputting face of light guide plate and the lighting face of light source is faced to the light inputting face of light guide plate. Whereinto, at least an extrusive diffusion part is set on the light inputting face on the light guide plate at the corresponding position of light source. A reflection hole is set at one side of the reflection face of light guide plate by the light diffusion part.

The invention discloses an efficient miniature projection optical engine, which comprises a light source module group, a lens group, a micro-display panel and a projection lens. The light source module group comprises a light emitting component and a shaping lens group which collects and shapes received light beams. The lens group is arranged on an emergent light path of the shaping lens group. The shaping lens group and the lens group image a light emitting surface of the light emitting component nearby the micro-display panel. The micro-display panel is arranged on an emergent light path of the lens group, modulates incident light to obtain image light with image information. The projection lens is used for projecting and imaging the image information on the micro-display panel on a screen. The optical engine adopts a critical illumination mode to improve the efficiency, and the whole optical engine only involves an illumination device, the micro-display panel and the projection lens, and the light path has simple design, compact structure and small size.

The invention discloses an underplanting method of traditional Chinese medicinal material radix tetrastigme. By the adoption of a hillside forest and pot culture intercropping planting mode, the method for carrying out underplanting of the traditional Chinese medicinal material radix tetrastigme on a large scale in the natural environment is established through the steps of forest land selection, soil selection, seedling selection, seedling culture, forest management, pest and disease integrated control and harvest. According to the method, abundant forest land resources are utilized to provide fields for forest and medicinal material intercropping, and the purposes of reducing planting cost and obtaining high-quality and high-yield radix tetrastigme tuberous roots are achieved by making full use of growing seasons based on the ecology-imitating planting principle; besides, the planting method is simple and low in cost.

The invention discloses a device and method for testing performance of blue light-emitting diode (LED) excitation fluorescent powder and relates to fluorescent powder. The invention provides a device and method for testing performance of blue LED excitation fluorescent powder based on an integrating sphere. The testing device is provided with a fixing base, an integrating sphere, a light outlet barrel, a blue LED light source, a TEC temperature control clamp, a constant current source, a cosine collector, a spectrograph, a computer, a baffle and a standard white board. An LED with the advantages of adjustable spectrum parameters and stable illumination serves as the excitation light source, the light rays reflected by the fluorescent powder are completely collected through the characteristic that the integrating sphere device is closed, a set of fluorescent powder performance measurement system with high applicability is provided, and important luminous performance indexes, such a luminous efficacy, external quantum efficiency and light conversion efficiency, of the fluorescent powder under the actual working conditions can be conveniently and accurately measured and analyzed; meanwhile, the LED excitation light source can be flexibly replaced in the system so as to meet the requirements of different fluorescent powder on different excitation light sources, and the system has good extension performance.

The invention discloses a catadioptric hybrid multispectral imaging system, which comprises a primary mirror, a catadioptric dual-purpose secondary mirror, a wedge-shaped dichroic beam splitter, a medium wave or long wave infrared or medium-long wave infrared dual-waveband imaging mirror assembly, a medium wave or long wave infrared or medium-long wave infrared dichroic detector unit, a visible to near infrared waveband imaging mirror assembly, a visible to near infrared waveband beam splitting device and a detection unit thereof, a short wave infrared waveband imaging mirror assembly, and a short wave infrared waveband beam splitting device and a detection unit thereof, wherein a hole is formed at the center of the primary mirror, and the reflecting surface of the primary mirror is a concave surface; and the incident surface of the catadioptric dual-purpose secondary mirror is a convex surface. The system can realize imaging with common field of view and common aperture of a same object, improve the utilization rate of light energy, save space for the beam splitter and the system, prevent parasitic light from directly leaking into the imaging mirror assembly from the hole formed on the primary mirror, correct asymmetric aberration, be more conductive to realizing large aperture and the larger field of view and significantly improve the imaging quality. The imaging with the same optical axis and the common field of view can enable an image to be easy to register.

The invention provides a display device which comprises a display panel and a backlight source, wherein the display panel comprises an upper base plate and a lower base plate which are oppositely arranged; a reflecting type light filtering layer and a colorful illuminating layer are overlapped on the upper base plate in turn from top to bottom; the colorful illuminating layer comprises a red quantum dot area, a green quantum dot area and a blue quantum dot area; the backlight source is located under the lower base plate, so that the colorful illuminating layer can respectively emit red, green and blue light and the light can penetrate through the reflecting type light filtering layer; and the reflecting type light filtering layer can locally reflect the light emitted from the backlight source to the reflecting type light filtering layer onto the colorful illuminating layer and then the colorful illuminating layer is excited to illuminate again, so that the lighting effect is promoted. The display device is capable of increasing the use ratio of light energy of the backlight source and the illuminating efficiency of the colorful illuminating layer, so that the content of quantum dot in the colorful illuminating layer can be reduced under the condition of less influence and even no influence on the illuminating effect and the content of cadmium element in the quantum dot can be further reduced so as to meet the standard requirement.

The invention discloses a photocatalytic oxidation-membrane separation circulating fluid bed reaction device comprising a photocatalytic reactor and a membrane separation circulating reactor, wherein the photocatalytic reactor comprises a photocatalytic reactor shell; the membrane separation circulating reactor comprises a membrane separation circulating reactor shell arranged on the upper part of the side of the photocatalytic reactor shell; the photocatalytic reactor shell is internally provided with an ultraviolet light source; the membrane separation circulating reactor shell is internally provided with an immersed membrane assembly; the immersed membrane assembly is connected with a water outlet; the lower part of the photocatalytic reactor shell is respectively provided with a water inlet and a sludge discharge opening; the upper parts and the bottoms of the photocatalytic reactor shell and the membrane separation circulating reactor shell are respectively communicated through a connecting pipe and a circulating pipe; and the lower part of the photocatalytic reactor shell and the lower part of the immersed membrane assembly inside the membrane separation circulating reactor shell are respectively provided with a first aerating device and a second aerating device. The invention has higher mass transfer efficiency and light energy utilization ratio by adopting the photocatalytic oxidation-membrane separation circulating fluid bed reaction device and greatly enhances the efficiency of photocatalytic oxidation reaction.

The invention belongs to the field of microalgae culture, and in particular relates to a half-dry solid-state adherent culture device for microalgae industrial production. The half-dry solid-state adherent culture device comprises a bracket system, adherent culture units, a supporting shaft transmission system, a speed regulating motor, liquid supplementation pipes, collection grooves and a culture medium liquid storage tank, wherein at least one adherent culture unit is arranged on the bracket system and is connected with the speed regulating motor through the supporting shaft transmission system; the liquid supplementation pipes are respectively arranged above the adherent culture unit and are communicated with the culture medium liquid storage tank through pipelines; the collection grooves are respectively formed below the adherent culture unit and are communicated with the culture medium liquid storage tank through liquid collection pipes; a liquid circulating pump and a carbon supplementation device are arranged in the culture medium liquid storage tank. The half-dry solid-state adherent culture device can be used for producing microalgae biomass and secondary metabolites on a large scale; the yield in unit floor area is effectively improved; the culture period is shortened; the culture water consumption is greatly reduced; the cost of the culture device and the operation cost are reduced; the industrial magnification is facilitated.