Surface light source adopts the organic EL point source is derived from the semiconductor laser white light source

If white leds as this development now, a new generation of lighting source as long as there is white leds is enough? … It is not so simple conclusion underground. White leds is a point light source, to get used to the brightness of the lighting, must coordinate multiple white leds, make them form a surface. And as a point source, the brightness of the white leds in fact is not as good as HID lamp. And need of surface light source and the point light source, outside the white leds out the importance of other light sources is emerged. 2010 'in the' Green Device BBS appeared standing on the perspective of speech. From the viewpoint of surface light source, panasonic electrician) Tian Zhuo zai introduced the developing tendency of the white organic EL lighting. Wild rice field thought, and as the light of fluorescent tube and point light white leds, as area light sources, white organic EL will become the backbone of the unique in the field of lighting. Panasonic electrician program was started in 2011 white organic EL panel sample supply, will initially be used in special lighting, then will be used to store lighting, after 2014 is expected to extend to the field of general lighting. At present, although compared with white leds white organic EL light-emitting efficiency is slightly inferior, but the future will certainly catch up with the white leds. White LED the luminous efficiency may basically stable at around 200 lm/W, and with the constant development of efficient phosphor type organic EL materials, white organic EL and the gap between white leds will be closing fast. From the perspective of the research results of panasonic electrician, a luminous efficiency of 130 around 2014 lm/W products will be not a dream.

as recently panasonic electrician, wild rice field also introduced the 'double multi-cell structures of organic EL element'. The element is the red, green phosphorescent light emitting layer ( By the general display company and Nippon steel chemical system) And blue fluorescent light emitting layer ( Idemitsu kosan) As a vertical stack. RGB 3 kinds of color mixing through vertical stack, even watch the white organic EL panel Angle change, white color is almost the same. Also in the process of speech lit color temperature of 4600 k and 3000 k respectively ( In color are Ra95) The manufacture of panel to the audience that almost can't see the panel Angle dependency. In addition, in the blue organic EL layer using the fluorescent light-emitting materials, because the present stage is not practical blue phosphor luminescence materials. Using semiconductor laser, make the brightness at about 2 HID.

5 times introduced aiming at highest endpoint light propulsion development measures, the day of long strands in a chemical industry. Long marina introduces the brightness of 270 CD/was HID lamp 2. About 5 times the solid light source. Its brightness than white leds were nearly single digits. The solid light combined laser projector the blue light blue used in the semiconductor laser and fluorescence material. In order to 0. The brightness of the 65 mm diameter 250 lm ( The current one. 2 a, the voltage is 4. 6 v) 。 Vision is applied to image recognition with concentrated light, medical and industrial special light, etc. Call it 'embodies the pursuit of the ultimate source' ( Marina) The white light source, but also has with the characteristics of simple lens can gather light. Speech process long shore also did demonstrate: use a combination of white light source and the outer lens made shone brightly.

the structure of this white light source is put the lens in semiconductor laser CAN encapsulate the upper part of the blue, and encapsulated with other CAN wrap up. In the center of the outer CAN encapsulate the above open a hole to shoot the light, will be mixed with the phosphor adhesive embedded in it. The aperture is 0. 65毫米。 Blue laser by package focusing lens and exposure to the phosphor, phosphor to external injection densities.

about laser light source, a lot of people will think its life is short. The development of white light source under the condition of the shell temperature is 25 ℃, brightness in half life an average of 20000 hours. The life of the laser is the package of the deteriorating and reflectivity of the reflector decline. Due to the blue laser diode under the condition of the shell temperature of 50 ℃ life-span for 40000 hours, if improve the reflector, is expected to put the brightness by half life extension to more than 30000 hours. White light source package and package of the lens and a phosphor material mixing adhesive are based on inorganic materials. This is due to the strong to use a blue laser light, if use resin material, will soon degradation. In addition, the laser light source is more expensive than LED to the impression to the person, but because of the use of the projector with laser, and still can use blu-ray Ray video of the violet laser diode used components such as semiconductor production technology, so as long as the laser components started mass production, will have the potential to cut down the price.

this kind of light source, although high brightness, luminous efficiency is only 45 lm/W. With the luminous efficiency is more than 100 lm/W is slightly smaller than white leds. According to long coast, so far is at the expense of efficiency to the pursuit of high brightness, really want to want to improve the luminous efficiency, there is way. The phosphor embedded part of the diameter of 0. 65 mm, and some did not shoot the sealed to the outside light. If reach HID2 brightness is not required. 5 times of use, you can take some means to enlarge the diameter of the phosphor embedded parts. This wasted light can radiation to encapsulate the outside, thus improve the luminous efficiency.