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Applied Sciences
Volume 9
Issue 11
10.3390/app9112177
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Article

Non-Contact Dermatoscope with Ultra-Bright Light Source and Liquid Lens-Based Autofocus Function

by
Dierk Fricke
1,*,
Evgeniia Denker
2,
Annice Heratizadeh
2,
Thomas Werfel
2,
Merve Wollweber
1 and
Bernhard Roth
1,3
1
Hannover Centre for Optical Technologies (HOT), Leibniz University, 30167 Hannover, Germany
2
Hannover Medical School, MHH, 30625 Hannover, Germany
3
Cluster of Excellence PhoenixD, Leibniz University, 30167 Hannover, Germany
*
Author to whom correspondence should be addressed.
Appl. Sci. 2019, 9(11), 2177; https://doi.org/10.3390/app9112177
Submission received: 29 March 2019 / Revised: 22 May 2019 / Accepted: 23 May 2019 / Published: 28 May 2019
(This article belongs to the Special Issue Modern Applications in Optics and Photonics: From Sensing and Analytics to Communication)
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Abstract

Dermatoscopes are routinely used in skin cancer screening but are rarely employed for the diagnosis of other skin conditions. Broader application is promising from a diagnostic point of view as biopsies for differential diagnosis may be avoided but it requires non-contact devices allowing a comparably large field of view that are not commercially available today. Autofocus and color reproducibility are specific challenges for the development of dermatoscopy for application beyond cancer screening. We present a prototype for such a system including solutions for autofocus and color reproducibility independent of ambient lighting. System performance includes sufficiently high feature resolution of up to 30 µm and feature size scaling fulfilling the requirements to apply the device in regular skin cancer screening.
Keywords: dermatoscopy; skin screening; biomedical imaging dermatoscopy; skin screening; biomedical imaging

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MDPI and ACS Style

Fricke, D.; Denker, E.; Heratizadeh, A.; Werfel, T.; Wollweber, M.; Roth, B. Non-Contact Dermatoscope with Ultra-Bright Light Source and Liquid Lens-Based Autofocus Function. Appl. Sci. 2019, 9, 2177. https://doi.org/10.3390/app9112177

AMA Style

Fricke D, Denker E, Heratizadeh A, Werfel T, Wollweber M, Roth B. Non-Contact Dermatoscope with Ultra-Bright Light Source and Liquid Lens-Based Autofocus Function. Applied Sciences. 2019; 9(11):2177. https://doi.org/10.3390/app9112177

Chicago/Turabian Style

Fricke, Dierk, Evgeniia Denker, Annice Heratizadeh, Thomas Werfel, Merve Wollweber, and Bernhard Roth. 2019. "Non-Contact Dermatoscope with Ultra-Bright Light Source and Liquid Lens-Based Autofocus Function" Applied Sciences 9, no. 11: 2177. https://doi.org/10.3390/app9112177

APA Style

Fricke, D., Denker, E., Heratizadeh, A., Werfel, T., Wollweber, M., & Roth, B. (2019). Non-Contact Dermatoscope with Ultra-Bright Light Source and Liquid Lens-Based Autofocus Function. Applied Sciences, 9(11), 2177. https://doi.org/10.3390/app9112177

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