Calculation method for sectional adjustment of fluorescent powder color wheel

Abstract

The invention relates to a calculation method for sectional adjustment of a fluorescent powder color wheel. The method comprises the following steps of 1, measuring color coordinates and a luminous flux of single-color fluorescent powder in the fluorescent powder color wheel by adopting an integrating sphere, and determining an angle ratio of color sections of the fluorescent powder color wheel; 2, by using known conditions in the step 1, calculating out a tristimulus value of mixed white light; 3, according to a relationship between the tristimulus value of the mixed white light and the colorcoordinates, obtaining color coordinates of the mixed white light by conversion; 4, according to a relationship between the color coordinates of the mixed white light and a color temperature, calculating out a color temperature value of the mixed white light; and 5, by using the known conditions in the step 1, calculating out a luminous flux value of the mixed white light. The color coordinates,the color temperature value and the luminous flux value of the mixed white light can be accurately calculated; by adjusting the angle ratio of the color sections of the fluorescent powder color wheel,the color sections of the fluorescent powder can be effectively utilized; efficient and high-color-gamut requirements are met; and the efficiency and the service life of an optical system are improved and prolonged.

Description

technical field [0001] The invention relates to a calculation method for segmental adjustment of fluorescent pink wheels, which belongs to the technical field of illumination and laser display. Background technique [0002] As a new type of light source with high brightness and high collimation, laser light source is being gradually applied to projection, lighting and other fields. Laser display technology uses the three primary colors of red, green and blue as the light source, fully utilizes the selectivity of laser waves and the characteristics of hyperspectral brightness, so that the displayed image has a larger color gamut performance space, so as to achieve the most realistic reproduction of the objective world. Bright colors provide more shocking expression. The laser display color gamut coverage can reach 90%, with perfect color reproduction. [0003] The light source of laser TV adopts monochrome or three-color laser. However, due to the immature development of g...

AI Technical Summary

Problems solved by technology

In addition, there are differences in the material properties of phosphors in different color segments. Due to the influence of the wavelength and optical power of the laser light source, there are also differences in the characteristics of the stimulated radiation light effect, such as optical excitation efficiency, optical saturation characteristics of blue lasers, and thermal quenching of phosphors. Extinction characteristics and light decay characteristics, resulting in oversaturation when the same power laser irradiates different fluorescent pink segments

When the phosphor pink section is oversaturated, the unconverted laser power returns to the laser, which may cause thermal shock of the laser, affect the reliability and power output of the laser light source, and reduce the optical efficiency and life of the system

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