LED Optical Group

LED Optical Assemblies: Modular Technology for Retrofit and Energy Efficiency

The implementation of a high-performance LED Optical Assembly is the most efficient technical strategy for the modernisation of lighting installations without the need to replace the complete luminaire structure. These modules integrate the diode array, precision optical systems and, in advanced versions, the thermal management system, allowing a transition to solid-state technology with photometric performance guarantees exceeding 140 lm/W.

Applications in lighting upgrades and photometric performance

In the field of urban and industrial engineering, optical assemblies are selected under strict photometric criteria. The use of optical-grade PMMA lenses allows light distribution to be adapted to specific geometries, whether through asymmetric road optics, intensive optics for great heights or extensive optics for working areas, always ensuring compliance with RD 1890/2008 outdoors and EN 12464-1 indoors.

Luminous Efficacy and Precision Binning

The quality of an LED Optical Assembly lies in its binning process. Our standards ensure colour consistency within 3 MacAdam ellipses (SDCM < 3), guaranteeing visual uniformity in large-scale installations. The efficacy of the assembly depends on the quality of the chip and the transparency of the optic, minimising absorption losses and maximising the luminaire's actual flux.

Thermal Management and L80B10 Lumen Maintenance

Long-term performance is conditioned by the dissipation capacity of the MCPCB (Metal Core PCB). An efficient thermal design ensures that the temperature at the junction point (Tj) remains at optimal levels, allowing flux maintenance of L80B10 at 100,000 hours to be certified. This robustness is essential to ensure that lumen depreciation does not compromise the minimum levels required by regulations before the end of service life.

Specialised Optics and Upward Light Output Control

To combat light pollution in outdoor projects, the modules are designed to deliver 0% Upward Light Output Ratio (ULORinst). Full Cut-off optics direct the beam with precision, reducing glare and optimising spacing between light points, which translates into lower installation and operating costs.

Technical Specifications Table (Professional Standard)

Frequently Asked Questions (FAQs)

1. What advantages does a Zhaga-certified optical assembly offer?

Zhaga certification ensures interoperability between components from different manufacturers. For a specifier, this means that the LED Optical Assembly can be replaced or upgraded in the future with new-generation modules without the need to mechanically modify the luminaire, avoiding technical obsolescence.

2. How does the CLO (Constant Light Output) function affect these modules?

The CLO function allows the driver to compensate for the natural lumen depreciation of the LED over time. At the start of service life, the module consumes less power to deliver the nominal flux, and this gradually increases. This avoids initial over-illumination and optimises the project's total energy consumption.

3. Is it necessary to change the driver when installing a new optical assembly in a retrofit?

It is highly recommended. To ensure the L80B10 factor, the driver must be perfectly calibrated to the operating current (mA) of the new LED block. In addition, modern drivers include surge protection and dimming protocols (DALI-2) that older discharge equipment does not have.

4. How important is the MCPCB substrate in performance?

The MCPCB is the printed circuit board with a metal core (generally aluminium) on which the LEDs are mounted. Its thermal conductivity is critical for transferring the heat generated by the diodes to the external heatsink. Inefficient transfer would drastically reduce the lifespan and luminous efficacy of the optical assembly.