Mr. Haiqi Lee Profile

Haiqi Lee

at Jinan Univ

SPIE Involvement:

Author

Publications (2)

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 July 2022 Paper

Simulation of spectral confocal microscopy system

Haiqi Li, Jun Zhang, Zhe Chen, Jinfeng Wang

Proceedings Volume 12279, 122790Q (2022) https://doi.org/10.1117/12.2616488

KEYWORDS: Confocal microscopy, Objectives, Sensors, Lens design, Light sources, Stray light, Light, Monochromatic aberrations, Microscopes, Light emitting diodes

Read Abstract +

As a kind of non-contact displacement sensor modulated by wavelength, spectral confocal microscopy system has high measurement accuracy and is insensitive to object tilt and surface texture, and has strong anti-stray light ability, which makes it become a hotspot of current research. The traditional spectral confocal microscopy system uses a wide-spectrum light source to illuminate the pinhole and dispersion objective lens to generate dispersion on one side of the measured object. The dispersion objective lens focuses the light of different wavelengths at different positions of the optical axis, converts the displacement information into wavelength information, and detects the reflected spectral information by CCD industrial camera or spectrometer to determine the peak wavelength of the focused light on the object surface, Thus, the axial distance information of the object surface to be measured is obtained. In this paper, based on the analysis of the traditional confocal microscopic system, a linear dispersion objective lens of the confocal microscopic system was designed. The axial dispersion of 3.228mm was achieved in the wavelength range of 450nm to 650nm, and the linear determination coefficient between axial dispersion and wavelength was greater than R²=0.9859.On this basis, a dual-optical path detection structure based on edge light is designed. By adding three impurity filters to filter stray light except the target wavelength, the results show that the new spectral confocal light path has high sensitivity, small stray light and strong anti-interference ability.

Proceedings Article | 26 July 2022 Paper

Visible light communication system based on LED display

Rui Yang, Haiqi Li, Zhe Chen, Hongbin Huang, Changying Chen, Jun Zhang

Proceedings Volume 12279, 122790M (2022) https://doi.org/10.1117/12.2616400

KEYWORDS: LED displays, Telecommunications, Data communications, Visible radiation, Signal detection, Light emitting diodes, Receivers, Optical communications, Modulation, Field programmable gate arrays

Read Abstract +

The visible light communication system based on LED display has the functions of display and information transmission at the same time, and has a wide range of potential applications in information broadcasting and stealth advertising. This paper proposes a real-time visible light communication system based on LED display. The system uses the LED display screen as the light source, completes data processing through FPGA, and the detection system uses PIN diodes as the detector to receive the light radiation signal of the display panel. In this paper, the universal asynchronous receiving/transmitting and coding mark reversal scheme is adopted to solve the most critical problem of the display communication system, that is, the timing problem of display data and optical communication data. Experimental results show that the system can receive characters, files, and pictures. Combined with FPGA data processing, when the system transmits data at a rate of 9.6kbps, under the condition of full-screen LED display, the communication distance is 105cm and the bit error rate is 2.7 ×10^-4.

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