Project Files
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Miniature USB Camera
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Palomar Medical Technologies was developing a handheld
cosmetic surgery laser and required a reliable PC-compatible
camera that could fit in their space-constrained handpiece.
The system had to work reliably in close proximity to a
laser that was fired with over four-hundred Amps of current
with nanosecond rise times. The fully working Camera design
had to be ready for system integration in under four weeks. |
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System
Overview
Bolton Engineering Inc constructed the USB Camera using
an Ovonics chipset and a VGA-size Ovonics CMOS imager.
The design was implemented on an 8-layer board, and
sensitive tracks were embedded between power planes.
Components were carefully placed to ensure low-noise
operation. The sensitive clock circuitry was placed on
the board side furthest away from the laser. Empty space
on the board outer layers was shielded with ground
copper. All electronics was squeezed onto single 0.8” x
2.5” board. The Camera ran off the USB power rail using
less than 100mA of current. The board worked the first
time and required no rework.
Project Scope
Bolton Engineering wrote the specification, designed the
schematics, obtained vendor quotes, designed the 8-layer
circuit board, debugged the system, and delivered ten
working prototypes. |
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Consumer and Computer
