Determination of tailored filter sets to create rayfiles including spatial and angular resolved spectral information

Rotscholl, Ingo; Trampert, Klaus; Perner, M.; Schmidt, Franz; Neumann, Cornelius

doi:10.1364/oe.23.029543

Cited by 4 publications

(1 citation statement)

References 11 publications

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“…In order to determine a robust filter combination, a Monte Carlo simulation, which incorporates precise filter models, uncertainty distributions as well as the different filter combinations, can be carried out. Suitable models, uncertainty distributions and a modeling and evaluation procedure can be found in [23]. Figure 4 shows a comparison of a Monte Carlo simulation and a real reconstruction performance of 15 possible filter combinations for the RGBW system from Fig.…”

Section: Determination Of Optical Filtersmentioning

confidence: 99%

Spectral near field data of LED systems for optical simulations

Rotscholl

Trampert

Schmidt

2019

Photonics and Education in Measurement Science 2019

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This work presents, summarizes and validates a fast, accurate and general measurement and modeling technique to obtain spectral near field data of LED systems in order to improve the optical design process of modern high quality LED systems. It requires only a minimum of goniophotometric near field measurements as well as no time-consuming angularly resolved spectral measurements. The procedure is named physically motivated basis spectra (PMBS) as its main assumption is that each piece of angularly and spatially varying spectral information can be described as the weighted sum of its physical basis spectra such as the individual semiconductors or a phosphor. Based on detailed spectral information regarding the goniophotometric measurement setup, the spectral model is obtained by solving a simple system of linear equations using the obtained near field measurements. The complete process is validated and applied to different state-of-the-art LED systems. The obtained results can be used directly in state-of-the-art ray tracers.

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Section: Determination Of Optical Filtersmentioning

confidence: 99%

Spectral near field data of LED systems for optical simulations

Rotscholl

Trampert

Schmidt

2019

Photonics and Education in Measurement Science 2019

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Light distribution technology of light-emitting-diode automotive lamps based on rippling pattern

Zhuang¹

2023

Appl. Opt.

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In this era of led-emitting-diode (LED) lighting, it is important to find a universal pattern structure for the LED automotive lamp optics. This paper starts with the secondary light distribution design method of a rippling pattern through the explanation and simulation analysis of its design principle and determines a 4′′round signal lamp scheme with good performance. It then completes the proofing verification of this scheme, and the test results achieve the original design goal. Additionally, several examples of other lamp types with the rippling pattern are introduced, including a 4′′ round halo lamp and 7′′ transit lamp.

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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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Determination of tailored filter sets to create rayfiles including spatial and angular resolved spectral information

Cited by 4 publications

References 11 publications

Spectral near field data of LED systems for optical simulations

Spectral near field data of LED systems for optical simulations

Light distribution technology of light-emitting-diode automotive lamps based on rippling pattern

Hyperspectral LED models for optical simulations

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