A Gobo Projector is one of the most cost-effective ways to brand a physical space. Whether it is projecting your logo onto a busy Delhi sidewalk or displaying safety warnings on a warehouse floor, the clarity of the image depends entirely on the quality of the installation. At Mangal Sen and Sons, we emphasize that projection is a science of light management.
1. Site Survey: Light vs. Lumens
Before drilling holes, you must evaluate the ambient light of your location. Projection is subtractive; it must compete with the existing light in the room. For outdoor daytime projection, you typically need 100W to 300W LED power. For indoor retail or evening storefronts, our 15W to 50W models are highly effective.
2. Throw Distance and Image Sizing
The "Throw Ratio" determines how large your logo will be at a certain distance. Most MS & Sons projectors use a standard medium-throw lens. As a rule of thumb, for every 1 meter of distance, your image will grow by approximately 0.25 to 0.35 meters in diameter.
| Distance (M) | Approx. Image Diameter (M) | Recommended Wattage |
|---|---|---|
| 3 Meters | 0.8m - 1.0m | 15W - 25W |
| 6 Meters | 1.8m - 2.2m | 50W |
| 12+ Meters | 4.0m+ | 100W - 200W |
3. Mechanical Installation: Avoiding Keystone Distortion
Keystoning occurs when the projector is at a sharp angle to the surface, causing the logo to look stretched or like a trapezoid. To prevent this:
- Perpendicular Alignment: Aim to keep the projector as "head-on" to the surface as possible.
- Mounting Height: If mounting on a ceiling to project on a floor, ensure the projector is centered over the target area.
- Custom Correction: If an angle is unavoidable, MS & Sons can provide "pre-distorted" glass gobos that look perfect when projected at a specific angle.
4. The Art of Focusing
Unlike a TV, a Gobo projector has a physical focal point. Our 2026 range features high-precision multi-coated glass lenses. To focus:
- Power on the unit and wait 60 seconds for the LED to reach full brightness.
- Loosen the waterproof lens ring (for outdoor models).
- Rotate the front lens barrel slowly. The image will go from "blurry" to "sharp" to "blurry" again. Find the middle point.
- Look at the edges of the text—that is where you will see the best focus results.
- Once sharp, tighten the locking screw to prevent vibration from shifting the focus over time.
5. Outdoor Setup: IP67 Ratings & Weatherproofing
In regions with heavy monsoons or extreme heat, like Delhi/NCR, weatherproofing is vital. Our outdoor logo projectors are IP67 rated, meaning they are dust-tight and protected against water immersion.
Installation Tip: Always install the projector with the cable gland pointing downward. This prevents water from running along the cable and seeping into the seals via gravity.
6. Maintenance for High-Output LEDs
To keep your brand shining bright, follow this maintenance schedule:
- Monthly: Wipe the external lens with a microfiber cloth. Dust buildup can reduce brightness by 15%.
- Quarterly: Check the cooling fan vents for debris. Heat is the enemy of LED longevity.
- Gobo Swapping: If you want to change your logo, contact us for a replacement Dichroic Glass Gobo. They are easy to swap in under 5 minutes.