Shrinking the Footprint: High-Performance Reflective Encoder Discs & Chips by Photo Reticle
In the world of precision motion, size matters—specifically, the smaller, the better. As miniaturized robotics, LIDAR systems, and portable medical devices evolve, the demand for ultra-low profile components has skyrocketed.
At Photo Reticle, we specialize in the engineering and manufacturing of reflective encoder discs that empower the next generation of miniature motors, drones, and actuators. By shifting from traditional transmissive designs to advanced reflective technology, we help you reclaim valuable PCB real estate without sacrificing a micron of accuracy.
The Reflective Advantage: Why Miniaturization Starts Here
Modern IC optical encoder chips integrate the LED and optical sensor into tiny QFN packages. Because the optics and circuitry sit on a single side of the disc, reflective mode encoders offer a significantly lower profile than transmissive alternatives.
This “one-sided” architecture makes Photo Reticle components the go-to choice for:
Household Vacuum Robots: Navigating tight corners with slim sensors.
Gimbal Pan & Tilt: Smooth, jitter-free camera movement.
Drones & Actuators: High power-to-weight ratios in space-restricted housings.
LIDAR: Precision timing in compact optical assemblies.
Precision Matching: LED Wavelengths & Reflectivity
The soul of an encoder is the interaction between light and material. Reflective encoder LEDs generally operate across a spectrum from 460nm (like the iC-Haus Encoder Blue series) to 870nm (standard for Broadcom AEDR chips).
At Photo Reticle, we don’t believe in a “one size fits all” approach. We engineer our discs to maximize reflectance based on your specific sensor’s wavelength.
1. Reflective Glass Discs (High Reflective Chrome – HRC)
For applications where precision is non-negotiable, our High Reflective Chrome (HRC) coating on glass is the gold standard.
Performance: Achieve >60% reflectivity across the 400-1000nm range.
Signal Integrity: We utilize ultra-low reflective chrome on the backside of the disc to eliminate “ghost” reflections, keeping unwanted interference below 5% in the 550-720nm range.
Superior Flatness: Glass provides the most specular reflectance, essential for lensless LED chips like the iC-Haus Blue series.
Premium Options: Gold coatings are available for extreme-performance environments requiring hybrid transmissive/reflective patterns.
2. Reflective Mylar Encoder Discs (PET)
When cost-efficiency meets “peel-and-stick” convenience, our Mylar composite discs shine.
Easy Integration: Features pressure-sensitive adhesive and laser-cut registration for rapid, tool-free installation.
Optimized for Broadcom: The aluminum reflective layer offers 70% reflectivity at 550nm and peaks at 80% over 970nm, making it the perfect partner for the Broadcom AEDR series.
Custom Rigidity: Can be bonded to acrylic substrates to provide extra stiffness while maintaining a lightweight profile.
3. Reflective Aluminum Discs
For when the going gets tough. Aluminum is the ultimate choice for high-temperature or high-vibration environments.
Durability: Built to withstand environmental stressors that would compromise film or glass.
Reflectivity Profile: Optimized for infrared, providing 60% reflectance at 900nm and 45% at 750nm.
Partner with Photo Reticle for Your Next Project
From data communication to sophisticated timekeeping, Photo Reticle’s disc technology ensures your LEDs shine brighter and your sensors read clearer. We don’t just manufacture components; we enable a more sustainable, miniaturized future.
Ready to elevate your motion control? [Contact Photo Reticle today] to discuss custom materials, precision patterns, and high-volume quotes tailored to your specific application.