What Is A Gobo in Projector?

What is a gobo in projector?

What is the gobo inside the advertising gobo projector? Its key function and selection guide.

What is Gobo?

Gobo is the abbreviation of "Go Between Optics", an optical component installed inside the advertising logo projector, used to control the shape of the light projection. It is like an "illuminated template", by blocking some of the light, it projects clear LOGOs, texts or patterns on the wall or the ground.

1 .The core function of the gobo lens

- **Precise control of light shape**: Convert ordinary light beams into customized patterns (such as brand logos, advertising slogans)

- **Enhance brand recognition**: Strengthen visual memory in shopping malls, hotels, and exhibitions

- **Save Installation Space**: Replace traditional light boxes and achieve high-definition projection of logos over a long distance

2. Common materials for the shading covers of advertising gobo light projector

Material Type	Characteristics	Applicable Scenarios	Service Life
Metal gobo	Etched from stainless steel or aluminum, resistant to high temperatures (500°C+)	High-brightness halogen/LED light source, long-term use	50,000 hours+
Glass gobo	High-precision color printing or etching, supports gradient effect	Requires color projection (such as full-color LOGO)	30,000 hours+

Professional advice: For projecting high-definition color images, it is recommended to use custom gobo made of heat-resistant glass.

3. Metal gobo Production Process

1. **Vector Graphic Design** (in AI/CDR format)

2. **Laser Cutting/Chemical Etching** (with precision up to 0.1mm)

3. **Surface Blackening Treatment** (to reduce halo effect)

4. **High-Temperature Resistant Coating** (to prevent oxidation)

4. Color Glass Gobo Technology

- **Double-sided Colored Printing**: Achieving gradient colors

- **Multi-layer Coating Technology**: Enhancing light effect contrast

5. How to choose a gobo for advertising gobo projector?

1 .Based on the color of the logo

- White logo: Can be made with metal gobo or heat-resistant glass gobo

- Logo with colors: Must use gobo made of heat-resistant glass material

2 .Select the Gobo size based on the gobo light groove.

gobo size	standard	Outside Diameter (Glass)	Outside Diameter (Steel)	Image Area (max)
A size	standard	100mm	100mm	75mm
B size	standard	86mm	86mm	64mm
D size	standard	53.3mm	53.3mm	40mm
E size	standard	37.5mm	37.5mm	28mm
F size	standard	41.5mm	41.5mm	28mm
G size	standard	66mm	66mm	45mm
H size	standard	52mm	52mm	32mm
J size	standard	38.8mm	38.8mm	25mm
M size	standard	66mm	66mm	48mm

3. Key Purchase Parameters

- **Temperature Resistance Grade**: The working temperature of the light source is 20%

- **Opening Ratio**: Affects the balance between brightness and clarity

- **Installation Method**: Compatible with both rotational and slot types

6. Gobo Maintenance and Common Issues

1 Cleaning and Maintenance

- Metal/Glass Surface: Wipe with an alcohol-soaked cotton pad

- Do not use abrasive cleaners

2 Fault Troubleshooting

- **Projection Blurring**: Check if the shading sheet is deformed or contaminated

- **Edge Scratches**: Could be caused by poor etching process

- **Excessive Aging**: Incompatibility between material and light source power

7. Advantages of Our custom gobo Service

✅ Ultra-high precision **laser cutting technology** at 0.05mm

✅ Military-grade stainless steel material with a temperature resistance of 1000+℃

✅ **72-hour rapid prototyping** service

✅ Free design optimization support (providing high-definition logo files)

The gobo lens, as the "core mold" of the advertising logo light, directly determines the precision and professionalism of the projection effect. Whether it is the projection of the LOGO of a brand chain store or the display of promotional information in a commercial center, choosing the appropriate shading sheet can greatly enhance the effectiveness of the advertisement.

Do you need professional custom gobo? Contact us immediately to obtain a free technical solution!