Halogen Hair Removal Optics for Low-Voltage Skin-Safe Irradiation
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Solution Overview
Problem
Conventional hair removal devices using high-energy light sources like pulsed light or laser pose safety hazards, require high voltage, are bulky, costly, and have limited spectral bands, leading to skin damage and high energy consumption.
Innovation Solution
A hair removal device utilizing a halogen lamp with a parabolic reflector and lens to convert light into a parallel beam, combined with a Peltier cooler for precise temperature control and an optical filter for safe, versatile use, powered by low-voltage DC.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If high-energy light sources (pulsed light or laser) are used for hair removal, then hair removal effectiveness is improved, but safety hazards increase (eye irritation, skin damage, high voltage requirements)
Solution Approach 1:
The patent replaces expensive, high-risk pulsed light or laser sources with a simpler, safer halogen lamp that has a shorter operational lifespan but eliminates safety hazards. The halogen lamp operates at low voltage without requiring special triggering mechanisms, making it inherently safer while still achieving hair removal through photothermal effect on melanin.
Solution Approach 2:
The patent converts the potentially harmful high-energy light into beneficial low-energy halogen lamp light that safely activates melanin's photothermal effect. By using a different wavelength range from the halogen lamp, the system achieves the same hair removal mechanism without the harmful side effects of high-voltage pulsed light or laser.
2Productivity
If high-energy light sources are used, then hair removal function is achieved, but device volume and cost increase
Solution Approach 1:
The patent eliminates bulky specialized power supplies and triggering mechanisms required for pulsed light or laser by using a simple halogen lamp that can be powered by standard low-voltage DC. This dramatically reduces device volume and complexity while maintaining hair removal functionality.
Solution Approach 2:
The patent extracts and removes the unnecessary high-voltage power supply and triggering mechanism components from the device, keeping only the essential halogen lamp and optical components. This extraction of unnecessary elements reduces device volume and simplifies the overall system design.
3Productivity
If pulsed light or laser sources are used, then hair removal is achieved, but energy consumption increases
Solution Approach 1:
The patent replaces high-consumption pulsed light or laser sources with low-power halogen lamps that consume significantly less energy. Although halogen lamps have shorter lifespans, their low energy consumption makes them environmentally friendly and reduces power supply requirements.
Solution Approach 2:
The patent changes the operating parameters from high-voltage pulsed light to low-voltage continuous halogen lamp operation. This parameter change from high-energy pulsed mode to low-energy continuous mode dramatically reduces energy consumption while maintaining the photothermal hair removal mechanism through melanin activation.
4Productivity
If pulsed light or laser sources are used, then hair removal is achieved, but spectral band versatility is limited
Solution Approach 1:
The patent makes the device multi-functional by using a halogen lamp that emits a broad spectrum of light. By adding different optical filters, the same device can perform hair removal, skin rejuvenation, acne treatment, and other beauty therapies, unlike pulsed light or laser devices limited to specific wavelength bands.
Solution Approach 2:
The patent enables the device to perform multiple beauty and therapeutic functions by combining the halogen lamp with different optical filters. The full spectrum output of the halogen lamp allows selective filtering for various treatments, making one device serve multiple purposes including hair removal, anti-aging, and acne management.
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 device is safer, more compact, and versatile, offering effective hair removal with minimal skin damage and reduced energy consumption, while enabling additional beauty and therapeutic functions.
Implementation Method 1
light generated by the light source is reflected by the parabolic inner wall of the reflector
Implementation Method 2
light generated by the light source is reflected by the parabolic inner wall of the reflector or refracted by the lens
Implementation Method 3
uses a halogen lamp as the light source
Implementation Method 4
combined with a Peltier cooler for precise temperature control
Implementation Method 5
Conventional hair removal devices utilize high-energy light sources such as pulsed light or laser to generate high-energy light that ablates hair
Data Source
AI summary
A hair removal device includes a main control board and a light source assembly. The light source assembly comprises a light source electrically connected to the main control board, a reflector housing the light source and providing a light outlet, and a lens located in front of the light source within the reflector. A head of the device is provided with a light window; the reflector has a parabolic inner wall; the light source is located on a focus line of the parabolic inner wall of the reflector; and an optical path of the hair removal device is that: light generated by the light source is reflected by the parabolic inner wall of the reflector or refracted by the lens to form a parallel light beam, and the parallel light beam is emitted through the light outlet toward the light window, irradiating skin outside the light window.