44results about How to "Consistent color temperature" patented technology

The present application relates to a method, system, computer equipment and storage medium for controlling the color temperature of stage lamps. The method includes: obtaining the color coordinates and illuminance of each monochromatic lamp, and obtaining the monochromatic Initial illuminance data at the current color temperature of the lamp; calculate the coordinate difference between the color mixing coordinate obtained by mixing the illuminance of the initial illuminance data and the target color coordinate; when the coordinate difference belongs to the first difference range, according to the color mixing coordinate , target color coordinates, R correction coordinates, and B correction coordinates to calculate the illuminance change of R and B; obtain the latest channel values ​​of R and B through the illuminance changes of R and B, and perform color mixing according to the latest channel values The color temperature of each single-color lamp can be adjusted. The invention can solve the problem that the color temperature drift and the color rendering index decrease of different lamps due to the difference between the lamp beads, so that the same color temperature of different lamps will be different, and the practical application requirements are met.

A light-emitting device comprising: at least one light emitting unit, a wavelength converter layer, and a reflective protector.The light emitting unit has an upper surface and the lower surface of each other.The light emitting unit includes a two-electrode pad, and the two electrode pad is located in the lower surface.Wavelength conversion layer is disposed on the upper surface.The wavelength conversion layer includes a low concentration fluorescent layer and a high concentration of fluorescent collapsia.The high concentration fluorescent layer is located between the low concentration fluorescent layer and the light emitting unit.The reflective protector is covered with a light-emitting unit and a partially wavelength conversion layer, and at least the two electrode pad and low concentration fluorescent collapsy layer of the lateral unit are exposed.Width of high concentration fluorescent collaps H .Width of low concentration fluorescent layer is W L .The width of the light emitting unit is W E .The light emitting device is more satisfied with the following inequality.W E <W L W H <W L And 0.8 <W H / W E ≦ 1.2.Also, a method of fabricating a light-emitting device is also provided.

The invention discloses a viscous fluorescent film for fast package of light emitting diode and a preparation method and application thereof. The preparation method is as below: (1) weighing and mixing vinyl silicone rubber, fumed silica, vinyl silicone oil, methyl vinyl MQ silicone resin, hydroxyl silicone oil and LED phosphor to obtain a mixture 1; (2) weighing an inhibitor, a tackifier, a Karstedt catalyst and methyl silicone oil; (3) adding the components in the step (2) into the mixture 1, evenly mixing by a kneader, a two-roll mill or a mixer to obtain a mixture 2, extruding the mixture 2 on a release film, covering another from the release film and calendaring. The viscous fluorescent glue film for fast package of light-emitting diode of the invention can be used in chip scale package of inversion LED white light and package of COB type LED chip. The method simplifies process, avoids the steps of first dam enclosure, then mixing and dispensing glue, improves productivity, increases yield and significantly reduces production cost.

The invention provides an image processing method for a display device and the display device. The method comprises the following steps of providing direct current for a backlight module of the display device; regulating the magnitude of the direct current according to a brightness control signal to control the brightness of the backlight module; and when the brightness of the backlight module is changed, regulating the color temperature and a gamma curve of the display device to be the same as those of the display device when the backlight module has preset brightness, so that influence of a direct current dimming mode on the quality of a display picture is avoided.

The invention discloses a data processing method, device and manufacturing method for applying fluorescent powder to LEDs, which are used to solve the problem of accurately applying fluorescent powder to each chip, so as to keep product quality consistent. The technical solution of the present invention is briefly described as including the steps of generating chip data files: processing the collected optical characteristic parameters of each chip in the chipset to generate data files for system execution or further processing; generating phosphor distribution data files The step of: performing data processing on the data file, and generating a phosphor distribution data file for the amount of phosphor required for each chip according to the data in the data file. The chip product applying the technology of the invention has good consistency characteristics, more humane, more stable and more convenient processing characteristics.

The invention discloses an LED light-emitting device for illuminating fresh meat in supermarkets, and the device comprises at least two light-emitting diodes (LEDs), wherein the emission spectrum of the device comprises an emission peak which is generated by one LED and within the wavelength range of 400-500 nm, an emission peak which is generated by enabling the LED to excite fluorescent powder and within the wavelength range of 500-600 nm and an emission peak which is generated by the other LED and within the wavelength range of 600-630 nm. The LED light-emitting device is consistent with atraditional fluorescent lamp for irradiating fresh meat in color temperature and visual effect, can be used for replacing a fluorescent lamp, avoids the problem of mercury pollution, and is higher inlight efficiency and longer in service life than an original fluorescent lamp.