Lit appearance modeling of illumination systems

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Citations (Scopus)

Abstract

In illumination systems the look and feel are often more important than objective criterion, such as uniformity and efficiency. The reason for this is two fold: the lit appearance often sells an item and substantial variation in the illumination distribution (up to 50%) over a broad region is not noticeable to an observer. Therefore, subjective criterion, such as the lit appearance, typically plays a crucial role in the development of an illumination system. Additionally, by using computer models to ascertain the lit appearance before manufacture of the system, it allows the designer to modify the system while not demanding investment to produce prototypes. I discuss methods of determining the lit appearance for illumination systems. This modeling includes the inclusion of material and surface properties, such as surface finish, spectral transmission, and internal scattering; the response of the human eye; and the amount of rays that must be traced. By archiving the ray data, animations as a function of position and angle can be developed. Examples are developed to highlight the utility of this technique. These examples include taillights for the automotive industry and a backlit LCD screen for a laptop. Animations of these models demonstrate their luminance.

Original languageEnglish (US)
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
EditorsJ.M. Sasian, R J Koshel
Pages65-73
Number of pages9
Volume4768
DOIs
StatePublished - 2002
Externally publishedYes
EventNovel Optical Systems Design and Optimization V - Seatle, MA, United States
Duration: Jul 9 2002Jul 9 2002

Other

OtherNovel Optical Systems Design and Optimization V
CountryUnited States
CitySeatle, MA
Period7/9/027/9/02

Fingerprint

Lighting
illumination
animation
Animation
rays
luminance
Liquid crystal displays
Automotive industry
surface properties
Surface properties
Luminance
Materials properties
industries
prototypes
inclusions
Scattering
scattering

Keywords

  • Illumination
  • Lit appearance
  • Optical design
  • Rendering
  • Unlit appearance

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Condensed Matter Physics

Cite this

Koshel, R. J. (2002). Lit appearance modeling of illumination systems. In J. M. Sasian, & R. J. Koshel (Eds.), Proceedings of SPIE - The International Society for Optical Engineering (Vol. 4768, pp. 65-73) https://doi.org/10.1117/12.482197

Lit appearance modeling of illumination systems. / Koshel, Richard John.

Proceedings of SPIE - The International Society for Optical Engineering. ed. / J.M. Sasian; R J Koshel. Vol. 4768 2002. p. 65-73.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Koshel, RJ 2002, Lit appearance modeling of illumination systems. in JM Sasian & RJ Koshel (eds), Proceedings of SPIE - The International Society for Optical Engineering. vol. 4768, pp. 65-73, Novel Optical Systems Design and Optimization V, Seatle, MA, United States, 7/9/02. https://doi.org/10.1117/12.482197
Koshel RJ. Lit appearance modeling of illumination systems. In Sasian JM, Koshel RJ, editors, Proceedings of SPIE - The International Society for Optical Engineering. Vol. 4768. 2002. p. 65-73 https://doi.org/10.1117/12.482197
Koshel, Richard John. / Lit appearance modeling of illumination systems. Proceedings of SPIE - The International Society for Optical Engineering. editor / J.M. Sasian ; R J Koshel. Vol. 4768 2002. pp. 65-73
@inproceedings{157c2c7e919848b5923e9a887fe982d3,
title = "Lit appearance modeling of illumination systems",
abstract = "In illumination systems the look and feel are often more important than objective criterion, such as uniformity and efficiency. The reason for this is two fold: the lit appearance often sells an item and substantial variation in the illumination distribution (up to 50{\%}) over a broad region is not noticeable to an observer. Therefore, subjective criterion, such as the lit appearance, typically plays a crucial role in the development of an illumination system. Additionally, by using computer models to ascertain the lit appearance before manufacture of the system, it allows the designer to modify the system while not demanding investment to produce prototypes. I discuss methods of determining the lit appearance for illumination systems. This modeling includes the inclusion of material and surface properties, such as surface finish, spectral transmission, and internal scattering; the response of the human eye; and the amount of rays that must be traced. By archiving the ray data, animations as a function of position and angle can be developed. Examples are developed to highlight the utility of this technique. These examples include taillights for the automotive industry and a backlit LCD screen for a laptop. Animations of these models demonstrate their luminance.",
keywords = "Illumination, Lit appearance, Optical design, Rendering, Unlit appearance",
author = "Koshel, {Richard John}",
year = "2002",
doi = "10.1117/12.482197",
language = "English (US)",
volume = "4768",
pages = "65--73",
editor = "J.M. Sasian and Koshel, {R J}",
booktitle = "Proceedings of SPIE - The International Society for Optical Engineering",

}

TY - GEN

T1 - Lit appearance modeling of illumination systems

AU - Koshel, Richard John

PY - 2002

Y1 - 2002

N2 - In illumination systems the look and feel are often more important than objective criterion, such as uniformity and efficiency. The reason for this is two fold: the lit appearance often sells an item and substantial variation in the illumination distribution (up to 50%) over a broad region is not noticeable to an observer. Therefore, subjective criterion, such as the lit appearance, typically plays a crucial role in the development of an illumination system. Additionally, by using computer models to ascertain the lit appearance before manufacture of the system, it allows the designer to modify the system while not demanding investment to produce prototypes. I discuss methods of determining the lit appearance for illumination systems. This modeling includes the inclusion of material and surface properties, such as surface finish, spectral transmission, and internal scattering; the response of the human eye; and the amount of rays that must be traced. By archiving the ray data, animations as a function of position and angle can be developed. Examples are developed to highlight the utility of this technique. These examples include taillights for the automotive industry and a backlit LCD screen for a laptop. Animations of these models demonstrate their luminance.

AB - In illumination systems the look and feel are often more important than objective criterion, such as uniformity and efficiency. The reason for this is two fold: the lit appearance often sells an item and substantial variation in the illumination distribution (up to 50%) over a broad region is not noticeable to an observer. Therefore, subjective criterion, such as the lit appearance, typically plays a crucial role in the development of an illumination system. Additionally, by using computer models to ascertain the lit appearance before manufacture of the system, it allows the designer to modify the system while not demanding investment to produce prototypes. I discuss methods of determining the lit appearance for illumination systems. This modeling includes the inclusion of material and surface properties, such as surface finish, spectral transmission, and internal scattering; the response of the human eye; and the amount of rays that must be traced. By archiving the ray data, animations as a function of position and angle can be developed. Examples are developed to highlight the utility of this technique. These examples include taillights for the automotive industry and a backlit LCD screen for a laptop. Animations of these models demonstrate their luminance.

KW - Illumination

KW - Lit appearance

KW - Optical design

KW - Rendering

KW - Unlit appearance

UR - http://www.scopus.com/inward/record.url?scp=0036438098&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0036438098&partnerID=8YFLogxK

U2 - 10.1117/12.482197

DO - 10.1117/12.482197

M3 - Conference contribution

AN - SCOPUS:0036438098

VL - 4768

SP - 65

EP - 73

BT - Proceedings of SPIE - The International Society for Optical Engineering

A2 - Sasian, J.M.

A2 - Koshel, R J

ER -