Overall Optical Design of LED Surgical Luminaires of Variable Light Spot

Shikang Zhou; Chungen Chen

doi:doi:10.11648/j.optics.20190801.11

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Overall Optical Design of LED Surgical Luminaires of Variable Light Spot

Shikang Zhou, Chungen Chen

Published in Optics (Volume 8, Issue 1)

Received: 17 December 2018 Accepted: 22 January 2019 Published: 21 February 2019

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Abstract

The surgical luminaires play a very important role in surgical operation and diagnostics. Its overall optical design is the most important component in the design of the surgical luminaires. The wide variable range of the spot size makes the luminaires adaptable to multiple occasions, and the variability is an important indicator for high-grade surgical luminaires. However, it is difficult to keep the uniformity of illumination when the size of the light field changes. One of the reasons why there are few new surgical lamps with wide range of spot size variation in the market is the lack of theoretical analysis. In this paper, we analyze the relationship between the optics of surgical luminaries and the variable light spot by examining a hypothetical surgical lamp composed of 7 LEDs, 6 of which can move radially to create the total spot variable. An improved multivariate Gaussian function will be used to simulate the variable illumination field. Several important optical parameters describing the light field in IEC standard are carefully selected as the independent variables of the Gaussian function. By adding seven improved Gaussian functions of single-spot, a mathematical function of all-spot illumination distribution is established. By this way, it is easy to find in what manner the illumination distribution of surgical luminaires varies with independent variables under the condition of meeting the requirements of international standards. From the calculated results, the important parameters for overall optical design are determined, such as the illumination distribution, the amount of spot movement, the maximum variation range of the light field and the uniformity of illumination. The graphical representation of the results are also given in this paper. The original calculations provided in this article can be used in overall optical design of surgical luminaires with any range of light field change.

Published in	Optics (Volume 8, Issue 1)
DOI	10.11648/j.optics.20190801.11
Page(s)	1-6
Creative Commons	This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.
Copyright	Copyright © The Author(s), 2019. Published by Science Publishing Group

Keywords

Surgical Luminaire, Shadow-Less Lamp, Variable Light Spot, Optical Design, Illumination, LED

References

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[2]	National Pharmaceutical Industry Standards [S], YY0627-2008.
[3]	Knulst A J , Stassen L P S , Grimbergen C A , et al. “Standards and Performance Indicators for Surgical Luminaires” [J]. LEUKOS, 2009, 6 (1): 13.
[4]	Forrester Jared A, Boyd Nicholas J, Fitzgerald J Edward F, et al. Impact of Surgical Lighting on Intraoperative Safety in Low-Resource Settings: A Cross-Sectional Survey of Surgical Providers. [J]. World Journal of Surgery, 2017, 41 (12): 3055-3065.
[5]	Kamsah, Nazri & Mohamed Kamar, Haslinda & Alhamid, Muhammad & Wong, Keng Yinn & Akademia Baru, Penerbit. (2018). “Impacts of Temperature on Airborne Particles in A Hospital Operating Room”, Journal of Advanced Research in Fluid Mechanics and Thermal Sciences. 44. 12-23.
[6]	“Technical Guidance Document: LED Surgical Task Lighting” (PDF). Department of Energy. Retrieved 30 May 2012.
[7]	JJ Mundingger and Kevin W. Houser, “Adjustable correlated colour temperature for surgical lighting” [J], Lighting Res. Technol. 2017; 0:1-11 Is it possible to help improve surgeries by mixing two LED lamps with four colour temperatures?
[8]	Jingwei Liu, Yong Jiang and Jianjiu Li, “Development of a New Type of Medical LED Shadow-less Lamp for Surgery” [J], Semiconductor Lighting, 2010.6.
[9]	Qiang Wang, “Design of LED Surgical Lamps”, Huazhong University of Science and Technology [D], 2011
[10]	Benhua Su, Chunying Su, Haiyan Yang, Nianlung Fen and Zhongxuan Sun, “Development of Operating Shadow-less Lamp with LED Light Source” [J], Chinese Medical Equipment, 2017, 14 (11):1-5
[11]	Meng Zhou, “Global Top Operative Lighting System” [J], China Medical Device Information, 2015,21 (02):68-69.
[12]	Peng Liu, “Study on Freeform Surface LED Shadow-less Lamp with Adjustable Spectrum and Its Visual Perception” [D], Zhejiang University, 2014
[13]	Shanghai Sansi Electronic Engineering Co. LTD, New Practical Patent: “Light spot adjustable LED shadow-less lamp” [P], Authorization Notice Number: CN 102661577 B (2013)
[14]	Ide, Takeshi & Kinugawa, Yoshitaka & Nobae, Yuichi & Suzuki, Toshihiro & Tanaka, Yoshiyuki & Toda, Ikuko & Tsubota, Kazuo. (2015). “LED Light Characteristics for Surgical Shadowless Lamps and Surgical Loupes”, Plastic and Reconstructive Surgery - Global Open. 3. 1. 10.1097/GOX. 0498.
[15]	Pan, C. T. & Chen, Candice & Yang, T. L. & Lin, Po-Hsun & Lin, Po-Hung & Huang, Jacob. (2015). “Study of reflection-typed LED surgical shadowless lamp with thin film Ag-based metallic glass” [J], Optik - International Journal for Light and Electron Optics. 127. 10.1016/j.ijleo.2015.11.150.
[16]	Zheng, Chaoqiang & Dai, Min & Zhang, Zhisheng & Hu, Yubo. (2016). “Intelligent control system of medical shadowless lamps” based on STM32. 1-4. 10.1109/M2VIP.2016.7827327.
[17]	Hajdau, Cornel & Bistricianu, Maria. (2017). “Electric supply availability for the surgical luminaires”, 426-429. 10.1109/EHB.2017.7995452.
[18]	Shanghai Sansi Electronic Engineering Co. LTD, Invention Patent: “Overall Optical Design of LED Surgical Luminaires of Variable Light Spot” [P], Authorization Notice Number: CN 102661577 B (2017).
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APA Style

Shikang Zhou, Chungen Chen. (2019). Overall Optical Design of LED Surgical Luminaires of Variable Light Spot. Optics, 8(1), 1-6. https://doi.org/10.11648/j.optics.20190801.11

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ACS Style

Shikang Zhou; Chungen Chen. Overall Optical Design of LED Surgical Luminaires of Variable Light Spot. Optics. 2019, 8(1), 1-6. doi: 10.11648/j.optics.20190801.11

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AMA Style

Shikang Zhou, Chungen Chen. Overall Optical Design of LED Surgical Luminaires of Variable Light Spot. Optics. 2019;8(1):1-6. doi: 10.11648/j.optics.20190801.11

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@article{10.11648/j.optics.20190801.11,
  author = {Shikang Zhou and Chungen Chen},
  title = {Overall Optical Design of LED Surgical Luminaires of Variable Light Spot},
  journal = {Optics},
  volume = {8},
  number = {1},
  pages = {1-6},
  doi = {10.11648/j.optics.20190801.11},
  url = {https://doi.org/10.11648/j.optics.20190801.11},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.optics.20190801.11},
  abstract = {The surgical luminaires play a very important role in surgical operation and diagnostics. Its overall optical design is the most important component in the design of the surgical luminaires. The wide variable range of the spot size makes the luminaires adaptable to multiple occasions, and the variability is an important indicator for high-grade surgical luminaires. However, it is difficult to keep the uniformity of illumination when the size of the light field changes. One of the reasons why there are few new surgical lamps with wide range of spot size variation in the market is the lack of theoretical analysis. In this paper, we analyze the relationship between the optics of surgical luminaries and the variable light spot by examining a hypothetical surgical lamp composed of 7 LEDs, 6 of which can move radially to create the total spot variable. An improved multivariate Gaussian function will be used to simulate the variable illumination field. Several important optical parameters describing the light field in IEC standard are carefully selected as the independent variables of the Gaussian function. By adding seven improved Gaussian functions of single-spot, a mathematical function of all-spot illumination distribution is established. By this way, it is easy to find in what manner the illumination distribution of surgical luminaires varies with independent variables under the condition of meeting the requirements of international standards. From the calculated results, the important parameters for overall optical design are determined, such as the illumination distribution, the amount of spot movement, the maximum variation range of the light field and the uniformity of illumination. The graphical representation of the results are also given in this paper. The original calculations provided in this article can be used in overall optical design of surgical luminaires with any range of light field change.},
 year = {2019}
}

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TY - JOUR
T1 - Overall Optical Design of LED Surgical Luminaires of Variable Light Spot
AU - Shikang Zhou
AU - Chungen Chen
Y1 - 2019/02/21
PY - 2019
N1 - https://doi.org/10.11648/j.optics.20190801.11
DO - 10.11648/j.optics.20190801.11
T2 - Optics
JF - Optics
JO - Optics
SP - 1
EP - 6
PB - Science Publishing Group
SN - 2328-7810
UR - https://doi.org/10.11648/j.optics.20190801.11
AB - The surgical luminaires play a very important role in surgical operation and diagnostics. Its overall optical design is the most important component in the design of the surgical luminaires. The wide variable range of the spot size makes the luminaires adaptable to multiple occasions, and the variability is an important indicator for high-grade surgical luminaires. However, it is difficult to keep the uniformity of illumination when the size of the light field changes. One of the reasons why there are few new surgical lamps with wide range of spot size variation in the market is the lack of theoretical analysis. In this paper, we analyze the relationship between the optics of surgical luminaries and the variable light spot by examining a hypothetical surgical lamp composed of 7 LEDs, 6 of which can move radially to create the total spot variable. An improved multivariate Gaussian function will be used to simulate the variable illumination field. Several important optical parameters describing the light field in IEC standard are carefully selected as the independent variables of the Gaussian function. By adding seven improved Gaussian functions of single-spot, a mathematical function of all-spot illumination distribution is established. By this way, it is easy to find in what manner the illumination distribution of surgical luminaires varies with independent variables under the condition of meeting the requirements of international standards. From the calculated results, the important parameters for overall optical design are determined, such as the illumination distribution, the amount of spot movement, the maximum variation range of the light field and the uniformity of illumination. The graphical representation of the results are also given in this paper. The original calculations provided in this article can be used in overall optical design of surgical luminaires with any range of light field change.
VL - 8
IS - 1
ER -

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Author Information

Shikang Zhou

Shanghai Sansi Electronic Engineering Technology Co., Ltd, Shanghai, China
Chungen Chen

Shanghai Sansi Electronic Engineering Technology Co., Ltd, Shanghai, China

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Plain Text BibTeX RIS

APA Style

Shikang Zhou, Chungen Chen. (2019). Overall Optical Design of LED Surgical Luminaires of Variable Light Spot. Optics, 8(1), 1-6. https://doi.org/10.11648/j.optics.20190801.11

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ACS Style

Shikang Zhou; Chungen Chen. Overall Optical Design of LED Surgical Luminaires of Variable Light Spot. Optics. 2019, 8(1), 1-6. doi: 10.11648/j.optics.20190801.11

Copy | Download

AMA Style

Shikang Zhou, Chungen Chen. Overall Optical Design of LED Surgical Luminaires of Variable Light Spot. Optics. 2019;8(1):1-6. doi: 10.11648/j.optics.20190801.11

Copy | Download

@article{10.11648/j.optics.20190801.11,
  author = {Shikang Zhou and Chungen Chen},
  title = {Overall Optical Design of LED Surgical Luminaires of Variable Light Spot},
  journal = {Optics},
  volume = {8},
  number = {1},
  pages = {1-6},
  doi = {10.11648/j.optics.20190801.11},
  url = {https://doi.org/10.11648/j.optics.20190801.11},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.optics.20190801.11},
  abstract = {The surgical luminaires play a very important role in surgical operation and diagnostics. Its overall optical design is the most important component in the design of the surgical luminaires. The wide variable range of the spot size makes the luminaires adaptable to multiple occasions, and the variability is an important indicator for high-grade surgical luminaires. However, it is difficult to keep the uniformity of illumination when the size of the light field changes. One of the reasons why there are few new surgical lamps with wide range of spot size variation in the market is the lack of theoretical analysis. In this paper, we analyze the relationship between the optics of surgical luminaries and the variable light spot by examining a hypothetical surgical lamp composed of 7 LEDs, 6 of which can move radially to create the total spot variable. An improved multivariate Gaussian function will be used to simulate the variable illumination field. Several important optical parameters describing the light field in IEC standard are carefully selected as the independent variables of the Gaussian function. By adding seven improved Gaussian functions of single-spot, a mathematical function of all-spot illumination distribution is established. By this way, it is easy to find in what manner the illumination distribution of surgical luminaires varies with independent variables under the condition of meeting the requirements of international standards. From the calculated results, the important parameters for overall optical design are determined, such as the illumination distribution, the amount of spot movement, the maximum variation range of the light field and the uniformity of illumination. The graphical representation of the results are also given in this paper. The original calculations provided in this article can be used in overall optical design of surgical luminaires with any range of light field change.},
 year = {2019}
}

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