In today's consumer lighting market, a truly eye-caring LED desk lamp must go far beyond “high brightness.”
To meet modern requirements, it must deliver flicker-free lighting, adjustable color temperature, automatic brightness compensation, and low blue light risk, while still remaining cost-effective and energy-efficient.

Powered by the high integration and low-power advantages of HLMicro MCU, AXTEK Technology Company Limited has developed a smart LED eye-caring desk lamp reference solution that balances performance, safety, and cost.
With optimized system design, the solution can even achieve up to two years of battery life, enabling premium eye-care lighting to reach mass-market households.

System Overview

This solution adopts a HLMicro MCU as the main controller.
The MCU integrates PWM control, ADC sampling, touch sensing, EEPROM storage, and low-power management, allowing a single chip to handle dimming, color tuning, ambient light detection, and user interaction.

This high level of integration significantly reduces BOM cost and design complexity, making it ideal for cost-sensitive smart lighting applications.

Key Features

1. Stepless Dimming & Tunable White Mixing

    * 3000K–6500K stepless color temperature adjustment

    * One-touch scene switching for reading, online classes, and drawing

    * Intuitive touch control:

         * Left/right slide: brightness adjustment

         * Up/down slide: color temperature adjustment

2. Automatic Ambient Light Compensation

    * MCU ADC samples desk illuminance every 2 seconds

    * Smart brightness control logic:

           * Below 500 lx: brightness increases automatically

           * Above 800 lx: brightness decreases automatically

    * Maintains stable illumination while reducing power consumption by approximately 20%

3. 45-Minute Pomodoro Timer

    * Light flashing and buzzer alert when countdown ends

    * Reminds users to rest their eyes regularly

    * One-touch disable option, suitable for office and adult users

4. Flicker-Free Lighting & RG0 Blue Light Safety

    * 16 kHz PWM dimming frequency, no visible banding on smartphone cameras

    * Flicker modulation depth < 0.5%, ensuring no perceptible flicker

    * Light source complies with IEC 62471 RG0 (Exempt Group)

    * Safe for long-term use without retinal risk

5. Night Light Mode

    * Long press for 2 seconds to enter 1% brightness warm white light

    * Soft illumination for night feeding or getting up at night

    * Long press again to return to the previous lighting state

6. Power-Off Memory

    * Brightness and color temperature stored in MCU EEPROM

    * Automatically restored after power loss

    * EEPROM endurance up to 100,000 write cycles, supporting over 10 years of usage

7. Child Lock Function

    * Press and hold two keys simultaneously for 5 seconds to lock touch controls

    * Prevents accidental adjustments by children

    * Improves safety in family environments

Performance & Eye-Care Test Results

Conclusion

An eye-caring desk lamp is not simply about brightness—it is a system-level balance of
flicker-free performance, low blue light safety, intelligent control, and cost efficiency.

With its integrated PWM, ADC, touch interface, and memory resources, the HLMicro MCU enables AXTEK Technology Company Limited to deliver premium eye-care lighting features on a low-cost platform, including:

    * Ra95 high color rendering

    * True 16 kHz flicker-free dimming

    * Automatic ambient light compensation

    * Ultra-long battery life design

This solution demonstrates how smart MCU-based lighting can bring flagship-level eye protection into everyday consumer products.

About AXTEK Technology Company Limited

AXTEK Technology Company Limited specializes in MCU-based application solution design and development, providing both 8-bit and 32-bit MCU solutions for lighting, power control, consumer electronics, and industrial applications.