Dynamic mesh-based analysis of dynamic irradiance characteristics of solar simulator

Meng, Qingguo; Li, Yanpeng; Gu, Yaxiu

doi:10.1016/j.ijleo.2015.08.085

Cited by 8 publications

(2 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In order to discuss the influence of the size of the integrating sphere's light outlet hole on the irradiation uniformity, a model was established using LightTools to simulate and analyze the irradiation uniformity at the integrating sphere's light outlet hole under different aperture and radius ratios. Generally, the irradiation uniformity is judged by the average difference of irradiation uniformity U 0 , the range difference of irradiation uniformity U 1 , the range difference of irradiation uniformity U 2 and the irradiation non-uniformity Bias [19], [20], [21].…”

Section: B Analysis and Design Of The Influence Of The Entrance And O...mentioning

confidence: 99%

Design of Integrating Sphere Uniform Light System for Solar Simulator

et al. 2023

View full text Add to dashboard Cite

In the process of designing and adjusting the solar simulator, the side lobe effect and aberration of the optical integrator affect the irradiation uniformity, an integrating sphere is proposed to replace the optical integrator for uniform light and the compound parabolic reflector for beam shaping. First, based on the equal illuminance theorem and the radiation transfer theory, the calculation formula of the energy transmission efficiency of the porous integrating sphere is derived; Then, the light hole illuminance interference factor is introduced, and the effects of the aperture size of the integrating sphere, the radius of the integrating sphere, and the size and position of the baffle on the energy transmission efficiency and irradiation uniformity are analyzed. Finally, an integrating sphere uniform light system with high energy transmission efficiency and uniformity is designed and simulated with LightTools software. The simulation results show that: the average difference of irradiation uniformity and the range difference of irradiation uniformity are closest to 1 in the area where the ratio of the opening size and radius of the integrating sphere is 36%-40%, and the light is evenly distributed; When the baffle position is 0.8 times of integrating sphere radius away from the light entrance hole, irradiation non-uniformity at the outlet hole is 1.99%, which is the best position of the baffle; In the effective irradiation surface of Φ1032 mm, the irradiation non-uniformity is 1.98%, and the maximum irradiance is 0.62 solar constants, the spot simulation with high irradiation uniformity on large irradiation surface is realized.

show abstract

Section: B Analysis and Design Of The Influence Of The Entrance And O...mentioning

confidence: 99%

Design of Integrating Sphere Uniform Light System for Solar Simulator

et al. 2023

View full text Add to dashboard Cite

show abstract

“…Two main focuses of optimizing illumination systems to achieve uniform flux and provide rich colors are light sources and optical path design, as reported in numerous literatures. For light sources, various types of the sources have been adopted according to the design requirement, such as high-pressure sodium lamp [6], quartz tungsten halogen lamp [7], [8], and metal halide lamp [9]- [12]. In particular, Xenon arc lamps have been widely used due to high output flux and match to solar spectrum [13]- [15].…”

Section: Introductionmentioning

confidence: 99%

Design of Ellipsoid and Spherical Combined Light Source for Uniform Flux and Color Mixing

et al. 2019

View full text Add to dashboard Cite

In this letter, an ellipsoid-spherical combined light source structure is presented for the purpose of uniform flux and color mixing, when considering heat dissipation. To allow more rays couple into spherical chamber while keeping illumination uniformity, algebraic equations to estimate light spot size focused by ellipsoidal reflector are derived and then employed to decide input slot size of the chamber. Then Monte Carlo ray tracing simulation suggests that the most preferable output slot size is between 15% and 30% of the chamber radius when considering both uniformity and available test area. A prototype with a 150-W Xenon arc lamp is fabricated to demonstrate heat distribution for the system, and experiment about uniformity indicates that 89.4% of the test circle radius can reach 2% nonuniformity. Color mixing performance for the system is studied by equipped with three ellipsoidal reflectors to collect rays from different color LEDs, and experiment shows that the maximum root-mean-square error of the spectrum across 90% of output circle radius is 1.4%. Results demonstrate it is a structure with simplified design process and having less dependence with light source type.

show abstract