LED light source for fluorescence endoscopy using quantum dots

Kells, K. R.; Kong, Koon Yin; White, W.B.; Kaddi, Chanchala; Wang, May D.

doi:10.1109/pht.2013.6461272

Cited by 4 publications

(2 citation statements)

References 21 publications

(20 reference statements)

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“…To dissipate heat, mounting the heat sink is essential. Kells et al [19] used a 12V DC fan and a heat sink to dissipate heat and increase the airflow. In the proposed prototype, heat sinks are mounted with LED.…”

Section: (A) the Led's Illuminance Measurementmentioning

confidence: 99%

Experimental Evaluation and Analysis of LED Illumination Source for Endoscopy Imaging

Mewada¹,

Patel²,

Chaudhari³

et al. 2022

IJIE

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The minimally invasive surgery uses a small instrument with camera and light to fit the tiny cut in the skin. The selection of the light depends on the power and driving current of the circuit. It can also help in the standardization of the camera and capture the tissues' true-colour image. This paper presents the LED source analysis used in the clinical endoscopes for surgery and thehuman body's medical examination. Initially, a LED source selection mechanism generating intense illuminance in a visibleband is proposed. A low-cost prototype model is developed to analyze the wavelength and illuminance of three different LEDs types. Aneffect on variation in LED illumination is investigated by changing the distance between the Borescope and LED source. True-colour image generation and tissue contrast are more important in medical diagnostics. Therefore, a sigmoid function improving the whole contrast ratio of the captured image in real-time is presented. The results of spectrum and wavelength for a current variation are presented. Type 3 LED produces higher illumination (i.e., 395 Klux) and peak wavelength (i.e., 622.05 nm) than other LEDs, while type-2 LED has better FWHM for the blue colour spectrum. The modification in the sigmoid function enhances the image with 34.25peak PSNR producing a true-colour image.

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Section: (A) the Led's Illuminance Measurementmentioning

confidence: 99%

Experimental Evaluation and Analysis of LED Illumination Source for Endoscopy Imaging

Mewada¹,

Patel²,

Chaudhari³

et al. 2022

IJIE

View full text Add to dashboard Cite

show abstract

“…The imaging system consists of a commercial light emitting diode (LED) source (530 nm) (Luxeon, USA). 20 The diverging light from the LED is optically coupled to a ber optic cable using a plano-convex lens (Thor labs Inc., USA). The free end of the ber optic cable was placed in contact with the skin.…”

Section: In Vivo Imagingmentioning

confidence: 99%