Design of Elliptic Reflective LED Surgical Shadowless Lamps Using Mathematical Optical Tracing Algorithms
Joint Authors
Chen, Y. C.
Pan, C. T.
Hsieh, C. C.
Yang, Tsung-Lin
Lin, Po-Hsun
Lin, Po-Hung
Source
Mathematical Problems in Engineering
Issue
Vol. 2014, Issue 2014 (31 Dec. 2014), pp.1-7, 7 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2014-09-29
Country of Publication
Egypt
No. of Pages
7
Main Subjects
Abstract EN
Traditional surgical shadowless halogen lamps are generally designed as projection type with many light bulbs, which can produce not only mercury pollution but also heat radiation that are serious problems to patient.
The study utilized Runge-Kutta methods and mathematical algorithms to design and optimize the freeform lens.
The LED (light-emitting diode) was adopted to replace the traditional halogen lamp.
A uniform lens was designed and fabricated based on the energy conservation.
At first, the light field of LED is concentrated through the freeform lens to improve the optical efficiency.
Second, the three-shell elliptic curves are applied to the reflective surgical shadowless lamps, where only few LED chips are needed.
Light rays emitting from different directions to the target plane can achieve the goal of shadowless.
In this study, the LED’s luminance flux is 1,895 lm.
The shadow dilution on the target plane is 54%.
Ec (central illuminance) is 114,900 lux, and the d50/d10 is 57% which is higher than the regulation by 7%, whereas the power consumption is only 20 W.
The energy of reflective surgical shadowless lamps can save more than 50%, compared with the traditional projective one.
American Psychological Association (APA)
Pan, C. T.& Chen, Y. C.& Yang, Tsung-Lin& Lin, Po-Hsun& Lin, Po-Hung& Hsieh, C. C.. 2014. Design of Elliptic Reflective LED Surgical Shadowless Lamps Using Mathematical Optical Tracing Algorithms. Mathematical Problems in Engineering،Vol. 2014, no. 2014, pp.1-7.
https://search.emarefa.net/detail/BIM-1044355
Modern Language Association (MLA)
Pan, C. T.…[et al.]. Design of Elliptic Reflective LED Surgical Shadowless Lamps Using Mathematical Optical Tracing Algorithms. Mathematical Problems in Engineering No. 2014 (2014), pp.1-7.
https://search.emarefa.net/detail/BIM-1044355
American Medical Association (AMA)
Pan, C. T.& Chen, Y. C.& Yang, Tsung-Lin& Lin, Po-Hsun& Lin, Po-Hung& Hsieh, C. C.. Design of Elliptic Reflective LED Surgical Shadowless Lamps Using Mathematical Optical Tracing Algorithms. Mathematical Problems in Engineering. 2014. Vol. 2014, no. 2014, pp.1-7.
https://search.emarefa.net/detail/BIM-1044355
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1044355