How do you measure gobo size?
Aug 07,2023 | JINGYU OPTOELEC
Gobos, those enchanting stencils that breathe life into mesmerizing projections, come in various sizes to suit diverse lighting fixtures and creative needs. Understanding how to measure gobo size is essential for selecting the perfect fit and unleashing the magic of these artistic wonders. Let's demystify the world of gobo size and explore the techniques for precise measurement.
**1. **Outer Diameter (OD):**
The outer diameter is the overall size of the gobo, including its edges. To measure the outer diameter, place a ruler or caliper across the widest point of the gobo. This measurement helps identify the appropriate gobo holder or fixture size required for projection.
**2. **Image Diameter (ID):**
The image diameter represents the actual cutout area of the gobo where light passes through to create the projected pattern. To measure the image diameter, place the ruler or caliper across the widest point of the cutout area. This measurement is crucial for ensuring that the gobo pattern fits the intended projection space accurately.
**3. **Aspect Ratio:**
The aspect ratio is the ratio of the image diameter to the outer diameter. For instance, if a gobo has an image diameter of 50mm and an outer diameter of 100mm, the aspect ratio is 1:2. Aspect ratio is important when resizing or adjusting a design to fit different gobo sizes without distorting the image.
**4. **Standard Gobo Sizes:**
Gobos are available in various standard sizes that fit most lighting fixtures. Common standard sizes include "Size A" (100mm OD, 75mm ID), "Size B" (86mm OD, 64.5mm ID), "Size M" (66mm OD, 48mm ID), and "Size S" (53mm OD, 38mm ID). Knowing these standard sizes simplifies the selection process.
**5. **Custom Gobos:**
In addition to standard sizes, gobos can be custom-made to fit specialized projectors or unique creative requirements. When ordering a custom gobo, provide the manufacturer with the exact OD and ID measurements, ensuring a perfect fit for your specific needs.
**6. **Gobo Holder Compatibility:**
When using gobos in fixtures or projectors, consider the compatibility of the gobo holder or slot. Some fixtures have specific dimensions or holders that can accommodate only certain gobo sizes.
**Conclusion:**
Measuring gobo size is a straightforward yet essential process for unlocking the full potential of these magical stencils. By understanding the outer diameter, image diameter, and aspect ratio, you can select the perfect gobo to match your lighting fixture and creative vision. Whether using standard sizes or opting for custom-made gobos, precise measurement ensures a seamless and enchanting projection experience.
So, let the artistry of gobo size guide your creative journey, and watch as these captivating stencils weave their spellbinding magic, illuminating the world with dazzling patterns and visual wonders.
*Note: Accurate measurements are crucial when ordering or using gobos to achieve optimal results and prevent compatibility issues with lighting fixtures.*