A gobo is a physical disc (usually metal or glass) that goes inside a light fixture (or gobo projector) to
project a pattern, logo, monogram, numbers, or texture onto a surface (like a wall, dance floor,
ceiling, backdrop, or even a product photo set).
In this guide, you’ll learn how gobo lighting works, the difference between metal and glass gobos, how sizing is measured, what projectors to use, and practical setup tips for events, DJs, and studio photography.
- How does a gobo work?
- Where are gobos used?
- Types of gobos (metal vs glass)
- What is a gobo projector?
- Gobo sizes explained (diameter vs image area)
- Design tips for crisp projections
- Setup tips (focus, distance, brightness)
- FAQ
How does a gobo work?
A gobo sits in the gobo holder of a fixture, between the light source and the lens.
The light passes through the gobo disc, and the lens focuses that light into a projected image.
The three ingredients of a clean projection
- A compatible fixture with a gobo slot or holder.
- The right gobo type and size for that specific fixture model.
- Proper focus + distance so the image is sharp and bright where you need it.
If you’ve ever seen a logo on a dance floor, a monogram on a wall at a wedding, or a patterned texture behind a portrait in a studio, there’s a good chance you were looking at a gobo.
Where are gobos used?
Gobos show up anywhere someone wants to create a high-impact visual created with light. Here are some of the most common real-world uses:
Events & weddings
- Monograms and initials on walls or dance floors
- Welcome signs and directional projections
- Texture washes (leaves, bokeh, geometric patterns) for ambiance
- Branding for corporate events and product launches
DJs and mobile lighting rigs
- Venue branding (club names, party themes, “Happy Birthday” numbers)
- Custom logo projections for premium packages
- Texture gobos to make smaller rooms feel “produced”
Studio photography & content creation
- Patterned backgrounds without physical backdrops
- A number in the backdrop of a birthday photo shoot.
- Product photo texture (e.g., “window light” look)
- Creative effects for video and reels
Types of gobos (metal vs glass)
The two most common gobo types are metal and glass. There are also plastic
gobos in some low-heat LED setups, but they’re generally niche and less durable.
| Type | Best for | Limitations |
|---|---|---|
| Metal gobo | Logos, monograms, text, simple icons, numbers, high durability, quick turnaround. | Needs “bridges” (support links) for islands in letters/designs as it works like a stencil. |
| Glass gobo | Fine detail, gradients/shading, and (in some cases) full color. Great for complex artwork. | Typically higher cost and longer production time, can be more fragile when handling. |
| Plastic gobo | Very low-heat LED fixtures, short-term or hobby use. | Lower durability and heat tolerance, limited professional applications. |
a metal gobo is usually the best starting point. If you need to have color in the projection explore glass gobos.
What is a gobo projector?
A gobo projector is any lighting fixture designed to accept a gobo and focus it into a
projection. In practice, that includes:
- Dedicated LED gobo projectors (popular for weddings and events)
- Ellipsoidal/ERS fixtures (common in theaters and studios)
- Moving heads with gobo wheels (common in clubs and touring rigs)
What to check before ordering a gobo
- Brand and exact model of the fixture
- Gobo size (each fixture has a specific holder size)
- LED vs halogen (heat can influence material choices and longevity)
If you’re unsure, the safest path is to identify the exact model and match the gobo size to that fixture.
(Many suppliers maintain large size databases because there isn’t one universal standard.)
Gobo sizes explained (diameter vs image area)
Gobo sizes are usually written as two numbers, for example: 26.8mm x 24mm.
These refer to:
- Outer diameter (the physical disc size that fits into the holder)
- Maximum image diameter (the largest usable design area)
clip or blur. Keeping key elements inside the safe image area improves sharpness and consistency.
The most common question: “Is there a standard gobo size?”
Not really. Different brands and models use different holders and optical systems. That’s why you’ll see
many size variants across the industry.
Design tips for crisp projections
The best gobo projections start with artwork that’s designed for light. Here are practical guidelines that
help you avoid common issues like muddy edges, missing details, or fragile cutouts.
1) Keep thin lines bold enough to survive
This is specially important for small size gobos (smaller than 25mm diameter image size). Very thin strokes can disappear at distance, especially in brighter rooms or on textured surfaces.
If your logo has delicate lines, consider simplifying or thickening them for projection.
2) Plan for “bridges” in metal gobos
Metal gobos are cut like a stencil. Any enclosed “island” (like the center of an “O”) needs a small support
bridge. A good gobo layout hides bridges in natural locations so the projection still looks clean.
3) Use high-contrast artwork
Projections are essentially contrast-based. Clear silhouettes, strong shapes, and simple typography read best, especially for events where people see the design from a distance.
4) Choose the right file format
When uploading your design, vector files are ideal: AI, EPS, PDF, SVG.
If you only have JPG or PNG, use the highest resolution available (a clean, high-contrast image works best).
Setup tips (focus, distance, brightness)
Brightness (especially for events)
- Brighter rooms require a brighter projector and/or smaller projection size.
- Dark surfaces absorb light—expect lower contrast on black or deep colors.
- Haze can make beams look dramatic, but it can slightly soften the projected edge.
Focus and distance
- Start close to get focus quickly, then move back to desired size.
- Refocus after moving, projection sharpness changes with distance.
- Use a flatter surface for maximum crispness (walls and floors vary a lot).
Orientation: “Why is my logo upside down?”
Depending on the lighting fixture, the gobo may need to be inserted facing a specific direction.
If your projection is inverted or mirrored, rotate or flip the gobo in the holder (or adjust the fixture settings).
and prevents 95% of day-of surprises. If you find a problem with the gobo you can contact us right away.
Ready to project your logo or monogram?
If you know your fixture model (or your gobo size), a custom gobo is one of the fastest ways to make an event, DJ setup, or studio shoot look premium.
Tip: If you’re not sure about sizing, start by identifying the projector brand and model.
From there, it’s easy to match the correct gobo size and recommend the right material.
FAQ
What does “gobo” stand for?
Many people say “gobo” comes from “goes before optics,” referring to its placement in the light’s optical path. In practice, most users simply treat “gobo” as the term for a projection template.
Is a gobo the same as a projector slide?
Similar concept, different hardware. A gobo is designed for lighting fixtures built to accept gobos and focus them through an optical system. “Slides” are more common in traditional image projectors.
Can I use any gobo in any light?
No. Gobos must match the fixture’s required size and holder format. Always confirm the exact projector model and the correct gobo size before ordering.
Which is better: metal or glass gobos?
Metal is typically best for durable, cost-effective logos and text (common for events and DJs), as well as a very crisp projection.
Glass is better for intricate detail, gradients, and color applications.
Why do metal gobos have little “bridges” in letters?
Metal gobos are cut like stencils. Enclosed areas (like the center of an “O”) would fall out without support,
so small bridges hold those islands in place.
How do I choose the right gobo size?
Identify your fixture’s brand and exact model, then match the required gobo size (outer diameter and maximum image diameter). If you already have an old gobo, you can measure it to confirm the size. You can always check the gobo size table on our website for more information.
