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US 8,541,951 B1Granted
High temperature LED system using an AC power source
AssigneeSoraa, Inc.
InventorsFrank Tin Chung Shum, Frank M. Steranka, Cliff Jue
Life of this patent
Estimating the term…
Abstract
Power management and thermal management for high intensity LED lamps are disclosed.
Claims20
An LED system for coupling to an AC power source comprising:
- a rectifier module being electrically coupled to the AC power source, the rectifier module being configured to provide a rectified output;
- a first array of LED devices, the first array of LED devices being electrically coupled to the rectifier module and to receive the rectified output;
- a second array of LED devices electrically coupled to the first array of LED devices;
- a current monitor module electrically coupled to the first array and second array of LED devices, the current monitor module being configured to determine a first current level using a drawn current level signal associated with the first array of LED devices and a second current level using a reference current level signal associated with the second array of LED devices;
- and
- a signal compensating module electrically coupled to the current monitor module, the signal compensating module being configured to generate a first compensation factor signal based on a difference between the first current level and a first reference current level.
3 more elements
An LED system for coupling to an AC power source comprising:
- a rectifier module being electrically coupled to the AC power source, the rectifier module being configured to provide a rectified output;
- a first array of LED devices, the first array of LED devices being electrically coupled to the rectifier module and to receive the rectified output;
- a second array of LED devices electrically coupled to the first array of LED devices;
- a current monitor module electrically coupled to the first array and second array of LED devices, the current monitor module being configured to determine a first current level using a drawn current level signal associated with the first array of LED devices and a second current level using a reference current level signal associated with the second array of LED devices;
- a signal compensating module electrically coupled to the current monitor module, the signal compensating module being configured to generate a first compensation factor signal based on a difference between the first current level and a first reference current level;
- and
- an LED submount having a front surface and a back surface, the front surface comprising an inner region and an outer region, the inner region being characterized by a reflectivity of at least 80%.
4 more elements
An LED system for coupling to an AC power source comprising:
- a rectifier module being electrically coupled to the AC power source, the rectifier module being configured to provide a rectified output;
- a first array of LED devices, the first array of LED devices being electrically coupled to the rectifier module and to receive the rectified output;
- a second array of LED devices electrically coupled to the first array of LED devices;
- a current monitor module electrically coupled to the first array and second array of LED devices, the current monitor module being configured to determine a first current level using a drawn current level signal associated with the first array of LED devices and a second current level using a reference current level signal associated with the second array of LED devices;
- a signal compensating module electrically coupled to the current monitor module, the signal compensating module being configured to generate a first compensation factor signal based on a difference between the first current level and a first reference current level;
- an LED submount having a front surface and a back surface, the front surface comprising an inner region and an outer region, the inner region being characterized by a reflectivity of at least 80% the first and second arrays of LED devices being disposed on the inner region;
- and
- a heat sink coupled to at the LED submount the heat sink being characterized by a thermal emissivity of at least 0.5.
5 more elements
Dependencies are inferred from the claim text.