FAQ

2025.07.30 

Applications of Spot & Collimated Spot Lights?

• Spot Light: 

Suitable for small-area illumination requiring precise alignment, often used with coaxial lenses.

 • Collimated Spot Light: Suitable for highlighting scratches or long-distance illumination (>160mm). Higher parallelism helps identify defects.

2025.07.30

Self-check if light fails to turn on:

•  Check if the dimmer power LED is on (ensure AC cord is plugged in).

•  Ensure the Manual/Remote button is switched on.

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Checklist for overheating:

•  Cross-check dimmer and extension cables to rule out external faults.

• Check if mounting screws are too long and causing short circuits.

(Follow the "Screw Depth Limit" label on the light)

• Ensure you are using a genuine Viswell dimmer to avoid incompatibility.

2025.07.30

Is Collimated Light the same as Directional Light?

 Yes, Collimated Light is a high-precision type of Directional Light.

Standard LED directional lights have ~±5° parallelism. For higher precision, use Laser sources (±0.5°).

Conclusion: Collimated = High-precision Directional; but Directional ≠ Always Collimated.

CBL：±10°  

BL：±60°

When the light source exhibits flickering or program control abnormalities, it is recommended to first loosen the screws securing the light source and check whether excessive tightening is causing the issue.

LGBL (Light Guide Back Light) uses side-edge light input from both sides of the light bar, with approximately 70% uniformity. 

In contrast, BL (Back Lights) provide about 80% uniformity. 

The brightness of LGBL is approximately one-tenth that of BL.

The advantages of LGBL are its slim profile and lower cost, making it suitable for large-area illumination applications. 

BL (Back Lights) use direct back illumination, with LEDs fully distributed across the entire surface；therefore, the brightness is significantly higher than that of LGBL.

Question: Can the dimmer PC24R2C-130WM be used with the light source CL-5050R24V0.6ACM?

Answer: No. The PC24R2C-130WM has a fixed maximum output of 2.7 A. Connecting a 0.6 A light source will damage it. You must use PC24R2C-65WM instead.

Dimmers below 1.5 A have automatic current detection, which protects the light source from overcurrent.

The PC24R2C-130WM (130 W / 24 V / 2 C = 2.7 A) exceeds 1.5 A.

Dimmers above 1.5 A are fixed current output. For example, a dimmer with a maximum 2.7 A output will always supply 2.7 A, even if the connected light source only requires 0.6 A at maximum.

Dimmer Wattage = Current × Voltage

Example: FLC-180020W24V19AC
19 A × 24 V = 456 W
→ Select PC24M(R)1C-480WM dimmer

Note: A 456 W light source paired with a 480 W dimmer provides approximately ±10% power margin for safe operation.