Application of Infrared Thermal Imaging Camera for LED Power Chip Temperature Detection

The use of LED is greatly on the increase owing to the fast development of the LED technology. Another major factor that will contribute to its widespread use is the accuracy of the LED luminous capacity. We all can attest there is a great depletion rate of energy worldwide, there is an audience, acceptance and positive prospect all over the world for the use of LED in the lighting sphere. There are possibilities that tungsten, fluorescent lamp, and the likes will be replaced by the LED as it will go on to be the major source of light.

What we know is that for quite some time now, a lengthy and total time of use and a high luminous capacity has been associated with the LED. However, it holds true that the major advancement needed for more in-depth use of the LED is technology upgrade. It is expedient to devise ways of producing more LED chips that will not be unstable. We would need to develop high energy LED chips that will be adaptable to offer both an encompassing illumination and accent lighting. At the same time, low-energy LED chips which can be used for well-lit decorations and for less complex lighting. In the event that a LED develops a technical fault, great heat will be generated even when in use and on top of that is the fact that high-energy LED is known to have a higher heat effect. The consequence of untimely dissipation of heat is that p-n junction temperature as seen in LED would greatly increase with respect to time and ultimately leading to a decrease in the effective recombination, tendency for the chip carriers and also the resin case to be susceptible to aging thereby leading to a decay and in the long run having an effect on the total length of use of LED. The total length of use of LED as a source of light is estimated to be more than fifty thousand hours for now as indicated by predictions. This value is the actual theoretical total length of use of LED as a source of light that is functioning at 25 ℃. Harsh environmental conditions such as the presence of both high temperature and a great amount of moisture are linked with the usage of LED as a source of light. These situations will lead to more full-blown faults in the LED as a source of light, increases the rate at which the material ages and consequently leading to an increase in the failure rate of the LED as a potential source of light. Take for instance, in the event that there is an increase in the temperature readings at the junction of a lamp bed increases from 115 ℃ to 135 ℃, there will be a decrease in the total length of use by this value 3/5. An important issue to be seriously considered in the technology and production of LED lighting is the dissipation of heat.

CHALLENGES THAT REQUIRE SOLUTION

A technology called optoelectronics has been placed in charge of the production of the LED chip, Research, and Development, LED light source module, LED transmitting tube. They will also be responsible for the production of high quality and state of the art 4-inch wafer and 120 lumen/Watt LED chip. Close attention must be paid to the distribution of the temperature on the inside and the exactness of the parts of the LED energy chip. At this point, it should be stated that the degree of hotness or coldness of the metal chips as found in LED will remain unchanged and also the degree of hotness or coldness of the non-metallic parts shall likewise remain unchanged, that is, constant when in operation. Real-time detection of the variations in temperature in LED energy chip needs to be carried out.

ALTERNATIVE SOLUTIONS ON GROUND WITH DEMERITS

The LED chip is of size 1mm*1mm which is very minute. Measurement of the distribution of the temperature would also be carried out. Close attention can be paid to the internal structure of the chip under a microscope with magnification x20, thereby posing a great difficulty in measurement. The inaccuracy of the temperature readings owing to the size of the LED chip which is very small. There is an option of a handheld thermal imager such as Flir E75 which can be held but it has its own peculiar challenges in that it is easily shaken when in use. What this implies is that the measurement of the temperature of the handheld thermal imager cannot be accurate. Installation is impossible for the thermocouple which is at the very frontal part of the data collector and as a result measurement of the changes in temperature cannot be consistently obtained.

 

MERITS OF THE FOTRIC INFRARED THERMAL CAMERA

The following are the merits of using the Fotric thermal camera:

• One is resting assured that the Fotric thermal camera comes handy with an R&D for tests to be performed. It also gives room for lengthy measurement of temperature thereby giving accurate readings.
• Observation of objects that are small in size is very much possible owing to the fact that a macro lens can be attached to the Fotric thermal camera.
• Changes in the measurement of temperature can occur if there is a form of contact, but this can be averted since the distribution of the temperature of the LED component can be obtained with no need of contact.
• LED chip can be monitored for a considerable and lengthy period of time since the Fotric thermal camera has embedded in it a bypass power supply feature.
• It is possible to view variations in temperature for either the previous readings or when the need arises for future analysis. This is made possible since the Fotric thermal camera has a complete radiometric thermal video.

 

RECOMMENDED THERMAL IMAGING CAMERA PACKAGE

Fotric 226 is highly endorsed and the device contains a 50µm lens which is macro in size and also an R&D platform for testing to be conducted. Likewise, Fotric 228 which is designed with a 50µm macro lens is also recommended which has a higher infrared resolution. For testing of the infinitesimal chip, Fotric 228 which has attached to it a 20µm macro-lens can be used.

• Fotric 226 3-in-1 Thermal Camera
• Fotric M50-226 Macro Lens 50 Micron Resolution
• B1 R&D Testbench Platform

OTHER USES OF FOTRIC THERMAL IMAGING CAMERAS

The Fotric thermal camera finds application in the research and development units of consumer electronics which includes but not limited to smartphones, LED, IoT hardware. Also finds usefulness in the R&D departments of industrial electronics establishments which includes power devices, frequency converters, and Energy.

• Testing companies of LED semiconductor lighting products.
• Manufacturing companies that produce chips.

MORE QUESTIONS?

To learn more about FOTRIC infrared thermal imaging cameras, please visit www.NovaTestPro.com or contact info@NovaTestPro.com for any inquiries.