Frequently Asked Questions (FAQ) for 3R SOLUTION 3R-MJL01 Handheld LED Microscope:

1. What is the 3R-MJL01 handheld LED microscope?

The 3R Solution 3R-MJL01, also called Magic Loupe, is an ultra-portable digital microscope combining optical zoom, digital zoom, integrated lighting, and a built-in display. It requires no external power or computer connection, making it ideal for on-the-spot inspections in the field or shop.

2. What magnification levels are available?

Optical magnification: 5×

Digital zoom: 1.8× and 2.8×

Combined total magnification: 9× (5× × 1.8×) and 14× (5× × 2.8×).

3. What lighting options does it provide?

The device features two independent LED light sources:

White LED × 3 for bright, uniform illumination

UV LED × 3 for fluorescence and crack detection

A simple switch lets you toggle between white, UV, or both lights simultaneously.

4. How does the built-in display and sensor perform?

Display: 2″ TFT (visible area 1.8″), 320 × 240 px

Sensor: 1/4″ CMOS, up to 1,280 × 720 px capture (output limited by screen resolution) These ensure real-time viewing and image capture without external monitors.

5. What is the focal length and viewing angle?

Working distance (focal length): 8–12 mm from lens to specimen

Viewing angle: approximately 45° This balance lets you comfortably position the microscope over uneven surfaces without tilting excessively.

6. How long does the battery last and how is it charged?

Battery: 3.7 V, 700 mAh Li-ion

Usage time: approximately 70 minutes per full charge

Charging time: around 50 minutes via micro-USB A charge-indicator LED shows state-of-charge and auto-cuts power when full to protect battery life.

7. How do I focus and operate the unit?

Power on by pressing the single button.

Select optical/digital magnification (5×, 9×, or 14×).

Choose lighting mode (white, UV, or both).

Position the unit 8–12 mm above the object and adjust for sharp focus.

View directly on the built-in display or capture images if supported.

8. What are the typical applications?

Electronic PCB and solder joint inspection

Crack and scratch detection on metals or plastics

Label and fine-print verification

Fluorescence analysis in forensic and material testing

Field biology or geological sample examination under UV light

9. How should I clean and store the microscope?

Gently wipe the lens with lens-cleaning paper or a soft microfiber cloth.

Avoid solvents or harsh chemicals near LEDs and electronics.

Store in a dry, cool environment away from direct sunlight.

Remove battery if the unit will be unused for extended periods.

10. What accessories and packaging are included?

Please contact QTE Technologies (qtetech.com/en)

11. What warranty and support options exist?

Please contact QTE Technologies (qtetech.com/en) or directly via email at [email protected].

12. How does the 3R-MJL01 compare to similar handheld microscopes?