76results about How to "Reduce light source requirements" patented technology

A light source device includes at least two light emitting parts which emit light; and a polarization separating part which transmits polarized light in a first vibrating direction of the lights from the light emitting part, and reflects polarized light in a second vibrating direction nearly orthogonal to the first vibrating direction, thereby to separate the lights from the light emitting part into the polarized light in the first vibrating direction and the polarized light in the second vibrating direction. Herein, the light emitting part includes a reflection part which reflects light that travels toward the light emitting part from the polarization separating part, in the direction of the polarization separating part. The polarization separating part synthesizes the polarized light in the first vibrating direction that has passed through the polarization separating part, and the polarized light in the second vibrating direction that has reflected on the polarization separating part, thereby to cause the synthesized light to travel in a predetermined direction.

A light source module of the present invention includes: a first luminous element for emitting light having two peak wavelengths; and a second luminous element for emitting light having a single peak wavelength. With this configuration, it is possible to downsize the light source module, and improve a color reproducibility via a color filter.

Compared to a conventional halogen lamp and optical filter, wavelength range of a light is narrowed, throughput of a desired wavelength range is increased, and irradiation of a light of a different wavelength range is enabled. The present apparatus for facial treatment and hair restoration is a combination of a light source means, which is a light source of a monochromatic light of an ultra narrow bandwidth having a half bandwidth of 10 nm or less emitted from a monochromatic LED light source, a monochromatic laser diode light source, or a laser light source, and a diffusion means. Specifically, in a case where the LED light source is used, the apparatus includes a bandpass filter for focusing the wavelength range of each light emitted from the light source and a diffusion lens for diffusing a light which passed through the filter and has an ultra narrow bandwidth with a half bandwidth of 10 nm or less.

The invention discloses a shield tunneling segment erector six-freedom-degree full automatic control system. The shield tunneling segment erector six-freedom-degree full automatic control system comprises an imaging device, an image processing device, a computer, a PLC (programmable logic controller), a control chip, an electromagnetic valve, a hydraulic actuator and a sensor. The shield tunneling segment erector six-freedom-degree full automatic control system is high in positioning accuracy, and low in demand for a light source, and even does not need to additionally arrange the light source, and the imaging device is convenient to install, and needs a small installation space, and additionally the shield tunneling segment erector six-freedom-degree full automatic control system can further improve construction speed, and also can reduce total cost of construction.

A lighting apparatus includes LEDs and a light-permeable cover passing the light emitted from the LEDs and an anti-scattering film is arranged on the cover for preventing the scattering of fragments when the cover fractures. The anti-scattering film contains a dispersing agent for dispersing light. Since the anti-scattering film containing a dispersing agent is arranged on the cover, when the lighting apparatus is damaged by falling, the scattering of fragments of the cover is preventable, and the glare can be reduced because the light emitted from the LEDs are dispersed through the dispersing agent contained in the anti-scattering film. Since the anti-scattering film containing the dispersing agent is arranged on the cover, the deterioration of luminance flux is preventable as compared to a case of arranging on the cover a member for anti-scattering and a member for reducing glare separately.

The invention discloses a compound interference type distributed optical fiber vibration sensing system and the sensing method thereof. The sensing system is a loop mainly connected by a sensing system for sensing the extraneous vibration event and a detection-control system for detecting and controlling vibration signal; the sensing system is double Sagnac optical fiber interferometers; and the detection-control system is composed of a detection system and a control system by connection; The invention is sensitive for vibration signal, has high detection precision and very high space resolving power; Compared with the current technologies, the system achieves the advantages of simple structure, low requirement to light source and convenient signal processing.

A lighting device includes a light source and a light distributor disposed on a light emission side of the light source. The light distributor includes an entrance surface through which light enters and an exit surface through which the light that enters through the entrance surface exits. At least one of the entrance surface and the exit surface includes concave regions. Each of the concave regions includes a smooth concave surface. The concave regions control distribution of light from the light source that is refracted or reflected by an optical lens or a reflective component.

The invention provides an ultra-long distance distributed optical sensing device based on two-way optical amplification. The device comprises a controlling and processing device, a broadband laser device (1) and a first optical fiber coupler (2), parallel first optical fiber arm (3) and second optical fiber arm (4), a second optical fiber coupler (6), a sensing link (7) and a faraday rotation mirror (8), all of which are orderly connected together; a photoelectric detector (20) is further connected between the controlling and processing device and the first optical fiber coupler (2). The ultra-long distance distributed optical sensing device is long in sensing distance, relatively high in accuracy and good in positioning effect.

The invention relates to the technical field of biological medicines, in particular to a kit for quantum dot nucleic acid detection of urinary tract infection-causing pathogens. The kit comprises a detection membrane strip, a fluorescent detection solution and reaction solutions, wherein the detection membrane strip comprises a nylon membrane and a capture probe fixed to the nylon membrane; the fluorescent detection solution comprises quantum dots for marking the capture probe and coupled with streptavidin on the surfaces; the reaction solutions include a reaction solution I, a reaction solution II, a reaction solution III and a reaction solution IV. The kit has the beneficial effects as follows: the high-throughput, high-sensitivity and high-specificity kit for the quantum dot nucleic acid detection of the urinary tract infection-causing pathogens is provided; the kit has fewer steps and obviously shorter detection time than the existing colorimetric gene chip, has lower equipment cost than an organic fluorescent gene chip, and is conducive to clinical popularization.

A light source driving circuit includes a transformer, a switching circuit, a control circuit, a brightness adjusting circuit and an isolator circuit. The brightness adjusting circuit is connected to a secondary winding assembly of the transformer and the light-emitting element for detecting an output voltage and/or an output current and generating a control signal according to the brightness adjusting signal. The isolator circuit is used for isolating the primary winding assembly of the transformer from the brightness adjusting circuit. The isolator circuit generates a feedback current according to the control signal. According to the feedback current, the switching circuit is controlled by the control circuit. As a status of the brightness adjusting signal is changed, a status of the control signal is changed and a time period of changing the status of the control signal is longer than a time period of changing the status of the brightness adjusting signal.

A method of constructing a non-imaging beam transformer includes reducing a tailored illumination function from a predetermined light source to a source point response illumination function; calculating a plurality of transformation pairs for the predetermined light source, the transformation pairs identifying the radii of illumination of the light source at given source output angles; determining a desired lighting profile for light output at a region of interest to be illuminated by the beam transformer; determining a surface profile of a surface of the beam transformer such that for given output angles of the light source, the transformation pairs at those output angles are satisfied to correspond to the desired lighting profile; and constructing the beam transformer having the surface profile determined based on the transformation pairs. The method can include characterizing a specific angular output distribution of a light source to calculate the transformation pairs.

An interface circuit is disclosed for operating a light source from an electronic fluorescent driver. In one example, the interface circuit comprises

• • input terminals for connection to lamp connection terminals of the electronic fluorescent lamp driver,
  • a first string interconnecting a first pair of input terminals,
  • a second string interconnecting a second pair of input terminals,
  • a third string interconnecting a first terminal of the first string and a second terminal of the second string and comprising a rectifier, output terminals of said rectifier being coupled during operation to the light source.

When a light source is operated making use of the interface circuit, a proper emulation of a fluorescent lamp is obtained.

A light source device comprises a waveguide, an electrodeless lamp, a probe, and conversing means. The waveguide is formed to contain a medium enabling a microwave to resonate and has a surface and an aperture cavity with an aperture opened at a predetermined position of the surface. The electrodeless lamp is loaded in the aperture cavity in a state where part of the electrodeless lamp is protruded from the surface of the waveguide so that the part of the electrode lamp emits light in response to applying the microwave to the electrodeless lamp. The probe supplies a high-frequency signal to the waveguide so that the high-frequency signal is converted to the microwave in the waveguide. The converging means is disposed on the surface of the waveguide to face the aperture cavity and utilizes all the light emitted from the part of the electrodeless lamp to converge the light.

The invention discloses a quantum dot nucleic acid detection kit and method for simultaneously detecting 24 respiratory tract pathogens. The kit comprises reaction solutions I-V, a positive control, an internal label and a negative control. The reaction solutions I-III comprise a respiratory tract pathogen detection primer, dN(U)TP, UDG, a PCR buffer system and an RNA enzyme inhibitor; the reaction solution IV comprises DNA polymerase; the reaction solution V comprises reverse transcriptase and DNA polymerase; the positive control comprises influenza A viruses, coronavirus OC43 pseudoviruses and mycoplasma pneumoniae recombinant plasmids; the internal label comprises exogenous fragment pseudoviruses free of target genes; the negative control comprises human genomic DNA; a fluorescence detection solution comprises a streptavidin-coupled quantum dot; a denaturant comprises an alkali solution; a neutral agent comprises an acid solution; and a membrane strip comprises a nylon membrane comprising a coupling-specific detection probe. The 24 common respiratory tract infection pathogens can be quickly, sensitively and specifically detected, and the occurrence of false negatives can be effectively monitored.

An image forming apparatus includes: a latent image carrier; an exposure unit which forms a latent image on the latent image carrier; a developing unit which develops the latent image formed on the latent image carrier by the exposure unit using liquid developer; a squeeze roller which contacts the latent image carrier, and applies bias voltage to the latent image carrier after development by the developing unit; an electrification reducing light source which supplies light to the latent image carrier to which bias is applied by the squeeze roller; a transfer member which contacts the latent image carrier and receives the image transferred from the latent image carrier; and a reflection preventing member disposed between the transfer member and the electrification reducing light source.

A backlight unit which significantly reduces overshoot of a light source driving current and audible noise includes a light source driven by a light source driving voltage, a light source controller controlling the light source driving voltage, and a soft starter generating a first soft start voltage by receiving a charge signal from the light source controller and outputting the first soft start voltage to the light source controller, and generating a second soft start voltage when the charge signal is not applied thereto and outputting the second soft start voltage to the light source controller.

To shorten the distance from a point light source to an effective light emitting area and reduce the size of a back light. A liquid crystal display having a liquid crystal display panel and a back light disposed on the back face of the liquid crystal display panel, where in the back light has a light guide plate, a point light source disposed on a side face of the light guide plate, and an outgoing light control board disposed on the light guide plate on the side of the liquid crystal display panel, wherein the outgoing light control board has a plurality of convex portions at least partly circular in cross-sectional shape on the surface of the light guide plate, and is disposed on the surface of the light guide plate on the side of the liquid crystal display panel with the convex portions made adherent to the surface of the light guide plate on the side of the liquid crystal display panel, and wherein the convex portions of the outgoing light control board are also formed in an area corresponding to a non-effective area of the back light.

An illuminating device includes: a calibrating output unit for reading an output current command value corresponding to a specific brightness command value and for outputting the output current command value to a light source; a ratio calculating unit for calculating a ratio between an illuminance of illuminating light emitted from the light source and a prescribed illuminance value prescribed for the specific brightness command value; an illuminance calculating unit for calculating each illuminance when each output current command value matched with each brightness command value is outputted; and a calibrating unit for calibrating a relationship between each brightness command value and each output current command value in a conversion table such that each illuminance at the time when each output current command value matched with each brightness command value is outputted is set to each prescribed illuminance value prescribed for each of the brightness command values.