The filter can be used to improve the performance of ordinary LED lamp

Toshiba and Toshiba lighting technology in the "2011 lighting exhibition staged in face exposure only after the LED lamp installed color conversion filter, can improve the color rendering of the LED lamp technology. According to reports, even the use of the average color index (Ra) for 70 ~ 85 of the ordinary LED lamp, can also be installed by the color filter, the Ra will be increased to more than 90. At present, the technology has been basically completed development, Toshiba will be based on the reaction of visitors at the exhibition to consider whether the product.

Live demonstration, the Ra is 85, R9 (bright red) for the of the LED light is converted to a Ra of 94, R9 is the light of the 97, in the light of the object color is very bright. In order to improve the performance of the previous color, in most cases, the need for the installation of high color LED color chip. The use of ordinary LED chip lamps installed in the color conversion filter, you can easily improve the color rendering. In addition, Toshiba is also on the ordinary LED lamp can be installed so that the red and green looks very bright filter and demonstrated.

The color conversion filter is made of pigment in the resin material, and the characteristic of the filter is to filter out the specific wavelength light. For example, R9 filters can be used to filter the pigment can be filtered near the red wavelength of light. After the installation of the color conversion filter, the brightness of the LED lamp will be reduced by nearly 10%, but in the light of the object looks very bright, so the brightness is not obvious.

The development of filters, Toshiba in the selection of pigments to spend painstaking effort. The reason is the use of pigments as organic materials, so there is a risk of rapid deterioration. Toshiba did not disclose details, but said the development of a smaller risk of deterioration of the pigment, so that the filter to ensure the life of 40 thousand hours.

According to Toshiba, the preparation of color conversion filter method in addition to the use of pigment, but also on the surface of the resin layer of multi-layer film. But the thin film multilayer structure, is dependent on the irradiation angle of light, such as filter and filter just below the side direction of the light color will be different, but the filter is added with pigment to light irradiation angle has no dependence.