Optical design of dental light with high performance and low power based on white LEDs

Sun, Ching Cherng; Ho, Hsin Yang; Cai, Jhih You; Chung, Shuang Chao; Chang, Yin‐Cheng; Yang, Tsung Hsun

doi:10.1364/ao.54.00e171

Cited by 2 publications

(1 citation statement)

References 21 publications

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“…[1][2][3][4][5][6] As the luminous efficacy of LED continues to increase and prices continue to decline, its application is no longer limited to signal lights, but is widely used in information, transportation, medical, biological and general lighting industries. [7][8][9][10][11] The light-emitting diode with the conformalcoating package is most used in vehicle headlamps due to the smaller etendue and better thermal dissipation than the LED with the encapsulated-lens packaging. [12][13] There has been considerable research on optical design of vehicle headlamps using LEDs as light source.…”

Section: Introductionmentioning

confidence: 99%

Headlamp design with an additional midfield mask for removal of specific illumination including glare

Lin

Sun

et al. 2022

Lighting Research & Technology

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In this paper, a bicycle light-emitting diode (LED) headlamp is design for the purpose of meeting the regulation and removing the unwanted reflection of some specific parts. In addition to the optical design of the headlamp, a three-dimensional mask is designed to block the LED light source to remove the specific unwanted light on the front tyre of the bicycle and then reduce the glare effect to the rider. The experimental results show that the 3D mask can effectively eliminate 97.7% of the unwanted light on the wheel of the bicycle and keeps 98.6% of the original illuminance at the A point of the K-mark regulation. The proposed mask approach will be helpful to the design by using LED as a light source.

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Section: Introductionmentioning

confidence: 99%

Headlamp design with an additional midfield mask for removal of specific illumination including glare

Lin

Sun

et al. 2022

Lighting Research & Technology

View full text Add to dashboard Cite

show abstract

Optical design of dental light using a remote phosphor light-emitting diode package for improving illumination uniformity

et al. 2018

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The projection-type dental lighting based on the remote phosphor light-emitting diode (LED) package is designed to enhance uniformity of illuminance and correlated color temperature (CCT) on a target plane and to remove glare in the eyes of the patient. This dental lighting enables dentists to illuminate effectively the patient's mouth by increasing the inner area (50 mm×25 mm) described in ISO 9680. The optical module comprised of the LED package and optical lens is modeled to satisfy the inner area wider than 100 mm×50 mm and illuminance over 5,000 lx per the designed optical module. The fabricated prototype dental lighting contains four optical modules, and the maximum illuminance is 22,786 lx. The measured inner area is 105 mm×74 mm, and the ratio of inner area to outer area is about 76%. Also, the CCT variation is below 450 K in total illuminance pattern.

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Optical design of dental light with high performance and low power based on white LEDs

Cited by 2 publications

References 21 publications

Headlamp design with an additional midfield mask for removal of specific illumination including glare

Headlamp design with an additional midfield mask for removal of specific illumination including glare

Optical design of dental light using a remote phosphor light-emitting diode package for improving illumination uniformity

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