Mr. Xu Yang Profile

Xu Yang

SPIE Involvement:

Author

Publications (1)

This will count as one of your downloads.

You will have access to both the presentation and article (if available).

DOWNLOAD NOW

This content is available for download via your institution's subscription. To access this item, please sign in to your personal account.

Email or Username Forgot your username?

Password Forgot your password?

Show

Keep me signed in

No SPIE account? Create an account

Proceedings Article | 26 October 2022 Paper

Design of LED light therapy device based on free-form lens

Zefeng Feng, Peipei Wang, Song Yang, Haiyang Wang, Zhiliang Jin, Guanting Hou, Xu Yang, Hu Liu, Daxi Xiong

Proceedings Volume 12461, 1246106 (2022) https://doi.org/10.1117/12.2656443

KEYWORDS: Light sources, Light emitting diodes, Freeform optics, Collimation, Fresnel lenses, Light-emitting diode therapy, Near field

Read Abstract +

The angle between the LED light therapy instrument and the skin will have an impact on the light penetration effect, which interferes with the development of the light treatment dose, resulting in the final light treatment effect does not achieve the desired goal. To address this problem, this paper proposes a new design scheme using a COB packaged LED light source with a 10mm diameter light emitting surface, using a free-form lens with a Fresnel lens for light leveling and collimation. The initial design of the free-form lens is based on the edge light theory, Snell's law and energy mapping method. The distance between the light source and the target surface is set to 200 mm, the diameter of the target surface is 400 mm, and finally the Fresnel lens is chosen to collimate the treatment light emitted from the LED light source. Simulation results show that a treatment spot with a diameter of 220 mm and a uniformity of more than 85% can be produced within the range of 50 to 150 mm after this optical path system, and the divergence angle of the spot is controlled within 10°. This design is able to produce a large size therapeutic spot in the near field with both uniformity and collimation, which makes up for the shortcomings of the traditional LED phototherapy instrument design and provides an important reference for the design of LED phototherapy instruments.

My Library

You currently do not have any folders to save your paper to! Create a new folder below.

Folder Name

Folder Description

View contact details

UPDATE YOUR PROFILE

Is this your profile? Update it now.

Sign into your SPIE.org account

Don’t have a profile and want one?

Create an account on SPIE.org

Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks. You are receiving this notice because your organization may not have SPIE eBooks access.*

*Shibboleth/Open Athens users─please sign in to access your institution's subscriptions.

To obtain this item, you may purchase the complete book in print or electronic format on SPIE.org.

ORGANIZATIONAL
Sign in with credentials provided by your organization.

Organizational Username

Organizational Password

Show/Hide Password

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

;

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members:

Non-members: ADD TO CART

Keywords/Phrases

Search In:

Publication Years