Light Stimulation System Using Extraction and Parabolic Mirrors
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Solution Overview
Problem
Existing light stimulation systems for biological samples face issues such as overheating of electronic components, inefficient light distribution, rapid aging of light-emitting diodes, and instability in temperature and humidity control, which can affect the accuracy and reliability of biological studies.
Innovation Solution
A light stimulation system comprising a light source positioned outside a closed chamber, an optical guide connecting the light source to an optical device inside the chamber, and an optical device configured to generate a parallel stimulating light beam with a constant section, using an off-axis parabolic mirror and adjustable optical components to optimize light delivery to the biological sample.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the light panel is placed inside the temperature-controlled chamber, then the light can directly illuminate the biological sample, but the electronic board heats up and increases the temperature inside the chamber, leading to cell deterioration
Solution Approach 1:
The light source is extracted from the temperature-controlled chamber and placed outside. Only the optical components that do not generate significant heat remain inside the chamber. This separation removes the heat-generating electronic board from the chamber environment, preventing temperature increase and cell deterioration while still delivering light to the sample through optical guides.
2Area of stationary object
If the entire illumination panel emits light, then the light coverage is maximized, but light reflections occur and energy is overconsumed
Solution Approach 1:
Instead of having the entire illumination panel emit light, the system uses a focused light source that directs light only to the specific area where Petri dishes are positioned. The optical guide and shaping means concentrate the light beam precisely on the sample containers, eliminating unnecessary light emission from other areas, reducing reflections, and decreasing energy consumption.
3Illumination intensity
If the light-emitting diodes operate under high temperature conditions, then the illumination intensity is maintained, but the LEDs age more rapidly and require frequent replacement
Solution Approach 1:
The light source is extracted from the hot, humid chamber environment and positioned outside. This separation protects the LEDs from temperature-induced aging and humidity-related degradation, significantly extending their operational lifespan while maintaining reliable light output for photobiomodulation experiments.
4Temperature
If a cooling panel is used to dissipate heat from the electronic board, then the temperature is controlled, but the system becomes complex and the operating point becomes unstable
Solution Approach 1:
The electronic board is extracted from the chamber environment entirely, eliminating the need for complex cooling panels and water circulation systems. The light source operates outside the temperature-controlled zone, simplifying the overall system architecture while maintaining stable operating conditions for both the electronics and the biological samples.
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 system effectively addresses the drawbacks of existing systems by maintaining stable temperature and humidity conditions, reducing light reflections and overconsumption, and prolonging the lifespan of light-emitting components, while ensuring homogeneous and efficient light stimulation of biological samples.
Implementation Method 1
an optical guide connected on one side to said light source so as to receive said input light beam and on the other side to said optical device, the optical guide being arranged to guide the input light beam emitted by the light source
Implementation Method 2
an off-axis parabolic mirror positioned relative to said optical assembly so as to reflect said divergent light beam and form said parallel stimulating light beam
Data Source
AI summary
A system for light stimulation of a biological sample includes a light source adapted to emit an input light beam, and a closed chamber to receive at least one container in which the biological sample is placed. The system includes an optical device, and an optical guide connected on one side to the light source so as to receive the input light beam and on the other side to the optical device, the optical guide being arranged to guide the input light beam emitted by the light source as far as the optical device and to emit an output light beam. The optical device is configured to generate, from the output light beam, a parallel stimulating light beam, with a predetermined constant section.