Lighting Device Modulating Color to Signal Optical Data Transmission Availability
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Solution Overview
Problem
Users find it difficult to quickly and easily identify whether a light source, such as an LED lamp, is capable of providing data transmission services at a given time, as existing technologies lack clear visual indicators for service availability.
Innovation Solution
A lighting device with a variator device that modulates the luminosity and/or color of the illumination light beam to signal the availability or unavailability of data transmission, using LEDs for both illumination and data transmission, and optical refractor devices to create distinct light beams for ambient illumination and data transfer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a lighting device uses LEDs for both illumination and data transmission, then data transmission capability is provided, but users cannot easily identify whether data transmission service is available
Solution Approach 1:
The patent applies color changes by using a color conversion element that converts monochromatic light from LEDs to polychromatic light with different colors. The lighting device displays different colors to indicate different service states: for example, green indicates data transmission service is available, while red indicates it is unavailable. This allows users to easily identify service availability through visual color cues without adding complex indicator components.
Solution Approach 2:
The patent implements multi-functionality by integrating both illumination and data transmission functions into a single lighting device. The LED serves dual purposes: providing ambient illumination and enabling optical wireless communication for data transmission. The color conversion element also serves multiple functions by converting light wavelengths and indicating service status, eliminating the need for separate indicator lights or additional components.
2Illumination intensity
If the lighting device provides ambient illumination, then visibility is improved, but the data transmission zone boundary becomes difficult to distinguish
Solution Approach 1:
The patent uses color changes to differentiate the data transmission zone from the general illumination area. The color conversion element creates a distinct colored light pattern that outlines or highlights the boundaries of the data transmission zone. This colored indication allows users to clearly see where the data transmission service is active while the rest of the area receives standard ambient illumination, solving the problem of zone boundary identification.
3Device complexity
If fixed light sources are used for illumination, then device simplicity is maintained, but ability to signal service availability is limited
Solution Approach 1:
The patent introduces color changes as a simple yet effective method to convey service status information. By incorporating a color conversion element that can display different colors based on service availability, the system communicates critical information (service up/down status) without requiring complex additional components. The color state directly indicates whether the data transmission service is operational, preserving information that would otherwise be lost.
Solution Approach 2:
The patent applies parameter changes by modifying the optical properties (wavelength/color) of the light emitted by fixed LED sources. The color conversion element changes the wavelength parameter of the light to convey different service states. This approach allows the fixed light sources to dynamically indicate service availability through parameter variation rather than requiring physical movement or additional active components.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The lighting device provides satisfactory ambient illumination while clearly indicating the availability or unavailability of data transmission zones, enhancing user identification without requiring movable parts or changes in the light beam's visual appearance, and supports high-frequency data transmission.
Implementation Method 1
an optical refractor device positioned in front of the light source so as to capture the light emitted by the light source and to form a light beam
Data Source
AI summary
A lighting device includes at least one first fixed light source dedicated to lighting, at least one second light source dedicated to data transmission by light modulation, and first and second refractor optical devices positioned respectively with respect to the first and second light sources, so as to sense the light emitted by said sources and form respectively first and second distinct light beams, said second light beam delimiting a data transmission zone. The lighting device also includes a variator of the brightness and/or the color of the first light beam, which is accentuates or decreases the visibility of the data transmission zone delimited by said second light beam, according to the availability or the unavailability respectively of the data transmission service in the data transmission zone.