A visible light communication system
A visible light communication and optical signal technology, applied in the field of visible light communication, can solve the problems of low signal utilization rate and inconvenient system integration, etc.
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0068] The light source 124 includes an RGB three-color combination white LED array and an LED driver module electrically connected to the LED array. The signal modulation circuit 122 includes a DFT-S-OFDM modulator. The substrate 1402 is a silicon dioxide layer with a thickness of 0.5 mm. The waveguide layer 1404 is a titanium dioxide layer with a thickness of h=255 nm, and covers the entire surface of the substrate 1402 . The metal grating 1406 includes multiple figure 2 As shown in the rectangular aluminum metal strip, the width w of the rectangular aluminum metal strip is 170 nanometers, the period Λ is 340 nanometers, the thickness d is 50 nanometers, and the duty ratio f=w / Λ is 0.5. The medium on the surface of the filter 140 is air. See Figure 6 , is a scanning electron micrograph of the filter prepared in Example 1. It can be understood that aluminum has the smallest skin depth in the visible light band and the smallest equivalent refractive index in the visible...
Embodiment 2
[0071] This embodiment is basically the same as Embodiment 1, except that the light source 124 includes an RGBA four-color combination white LED array and an LED driver module electrically connected to the LED array. The signal modulation circuit 122 includes a DFT-S-OFDM modulator. The substrate 1402 is a silicon dioxide layer with a thickness of 0.5 mm. The waveguide layer 1404 is a titanium dioxide layer with a thickness of h=420 nm, and covers the entire surface of the substrate 1402 . The metal grating 1406 includes multiple figure 2 As shown in the rectangular aluminum metal strip, the width w of the rectangular aluminum metal strip is 155 nanometers, the period Λ is 310 nanometers, the thickness d is 70 nanometers, and the duty ratio f=w / Λ is 0.5. See Figure 9 , is a scanning electron micrograph of the filter prepared in Example 2.
[0072] Further, in this embodiment, the four-bandpass filtering performance of the optical filter 140 is simulated and tested experi...
Embodiment 3
[0074] This embodiment is basically the same as Embodiment 1, the difference being that the metal grating 1406 is made of gold. From Figure 12 It can be seen that the optical filter designed in this embodiment basically meets the three-pass band filtering requirements.
PUM
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com