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Lexel Spot

RGB SSL Spot LampLexel LED LX-1000 system is designed for general lighting applications where perfectly controllable light and dynamic environments with flexible scene setting are required. It is used as the main component of Philips ColorSpot Lightolier SSL luminaire.

Lexel LED LX-1000 is a system with an architecture based on two modules communicating through a proprietary lighting protocol (T-Bus):

  • External Protocol Translator (accepts DMX or DALI) and Power Supply
  • Light Generation Module (light engine)


  • Retail – shop windows, mannequin islands
  • Museum and galleries
  • Multi-purpose rooms

Contributions to the product:

Conceptualization and ResearchSoftware Development Process
Light generation control algorithms
Light measurement and signal filtering
Thermal management algorithm
Power management algorithm
Overall firmware development process
Internal coding standards
Development tools selection
Version control system
Bug tracking system
Written Specifications and ProceduresEmbedded Software Architecture and Design
Hardware requirements and system I/O mapping
Functional specification
Simulation/emulation environment specification
T-Bus internal lighting protocol specification
Simulation/emulation design
Overall firmware architecture
Firmware design documents
Code DevelopmentTesting & Debugging
Board start-up and boot-loader
Device drivers
Non-volatile memory management
Real-time framework
Color feedback loop
T-Bus protocol stack
DALI protocol stack
DMX/RDM protocol stack
Firmware debug support
Exception/error handler
Performance analysis tools
Diagnostic tools for R&D
Technical leadershipIntellectual Property
Training and mentorship for the firmware team
Design authority and knowledge sharing
1. International patent application: WO2008/070977A1 (PCT/CA2007/002219)
Authors: Shane Robinson, Stefan Poli
2. International patent application: WO2008/070981A1 (PCT/CA2007/002229)
Authors: Shane Robinson, Bojana Bjeljac, Duncan Smith, Stefan Poli