Improvement of light quality by ZrO_2 film of chip on glass structure white LED

Lin, Huang; Ye, Zhi Ting; Lin, Chien-Chung; Chen, Kuo Ju; Tu, Hsien Hao; Chen, Huang-Ming; Chen, Cheng-Huan; Kuo, Hao‐Chung

doi:10.1364/oe.24.00a341

Cited by 6 publications

(1 citation statement)

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“…Especially color fringes and color mixing are problematic due to spatially and angular varying spectral distributions of LEDs. Color inhomogeneity reduction of LED based lighting systems is therefore an important field of research [1][2][3][4][5]. The design of color mixing optics [6][7][8] relies on information regarding the colorimetric and spectral variations of the source.…”

Section: Introductionmentioning

confidence: 99%

Hyperspectral LED models for optical simulations

et al. 2016

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Precise spectral and colorimetric simulations in commercial ray tracing software require realistic light source models, which provide spectral information as a function of angle and spatial dimension. We describe and validate a general workflow to create hyperspectral LED models as a linear combination of spectral models. The workflow only requires user defined precisions and rayfiles obtained with different optical filters. The rayfiles are transformed into histogram based models, whose precision is evaluated by normalized cross-correlation values of their intensity distributions in the near-, mid-and far field. Additionally, the concept is evaluated with a spatial and spectral well defined test device.

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