luminous flux造句
1. Lumen : The unit for measuring luminous flux.
2. Visual, electromagnetic spectrum, luminous flux, luminous intensity, illuminance, luminance.
3. The luminous flux per unit area at any point on a surface exposed to incident light.
4. Ratio of the absorbed radiant or luminous flux to the incident flux.
5. Of a source . Quotient of the luminous flux emitted and the power consumed.
6. Ratio of the utilized flux to the luminous flux leaving the luminaires.
7. The measurement of the luminous flux of UHP Power light source is described in this paper.
8. The LED total luminous flux decreases with the increase of time in the DC mode, but it does not change in the pulse mode.
9. Please take Luminous Flux as standard parameter, Luminous Intensity is only for reference.
10. They create a uniform value of luminous flux due to the high frequency used.
11. The paper introduces a device of testing luminous flux of vehicle lamp with integrating sphere and selenium cell as detector, and gives design thought of this system.
12. If the krypton component of mixture gases is filled, the power and total luminous flux of compact fluorescent lamps will be reduced to be down 5- 10%, and the lamp voltage is also reduced too.
13. By means of the instrument, we got what the total luminous flux calculation needed, and designed a program to calculate the value of LED's luminous flux.
14. The width, height, brightness of the screen and the luminous flux, focus of the cineprojector are important factors of cinema auditorium design.
15. Because of this reason, it is necessary and important for us to make some measurements and researches about the total luminous flux of LED.
16. With the continuous development of LED industry, an accurate measurement on the total luminous flux of LED has been put on the agenda.
17. This paper described the principle, apparatus and correction methods of a new method of realizing the total luminous flux scale by using integrating sphere. The results are also presented.
18. At first, we discussed the traditional integrating sphere relative method for the measurement of LED's total luminous flux.
19. It is helpful to reducing the uncertainty of measuring LEDs luminous flux with integrating spheres.
20. That part of a luminaire designed to reflect the luminous flux of the lamps in required directions by means of specular reflection.
21. Among the many technical indexes of LED, the total luminous flux is one of the most important.
22. The uncertainty evaluation and data processing methods for the CCPR key comparisons of luminous intensity and luminous flux unit are introduced.
23. Note: The above classification table is applicable to 1W series product of red, yellow, green, blue and white. When in mass production, luminous flux of high power white LED is insured upward of 35lm.
24. Characterzation: high quality quartz bulb, biplanar filament which enables increased illumination, uniform color temperature and luminous flux.