Lightness, hue and saturation as the three characteristics of color vision. The degree of brightness is bright; tone determined by the wavelength of color do not, such as the 700nm light color is red, 579nm light color is yellow, 510nm light color is green, etc.; saturation is the purity, not mixed with white, narrow-band single- color in the visual
Lightness, hue and saturation as the three characteristics of color vision. The degree of brightness is bright; tone determined by the wavelength of color do not, such as the 700nm light color is red, 579nm light color is yellow, 510nm light color is green, etc.; saturation is the purity, not mixed with white, narrow-band single- color, the visual is the high saturation of color. All of the light spectrum are the most
Pure light color, add more white, more impure mixture of colors, looks more bright
International Commission on Illumination (CIE) 1931 was enacted, a color map, with the composition of the three primary colors of a color in proportion to the provisions of this color, that is, the ratio of the sum by three primary colors to represent a color, and can be written as equation :
(C) = G (R) G (G) B (B)
Where, (C) on behalf of a particular color, (R), (G), (B) is the red, green and blue primary colors, R, G, B is the scale factor of each color, they are equal to 1 , ie R + G + B = 1, "C" refers to the match that same color in the visual, such as a blue-green can be expressed as:
(C) = 0.06 (R) 0.31 (G) 0.63 (B)
If the two primary colors mixed in the three factors, there is a zero; such as matching white, the R, G, B should be equal.
Any colors match the color with the ratio of the three primary colors to be provided, so that each color occupies in the chromaticity diagram to determine the location. Chromaticity diagram:
Chromaticity coordinates of X-axis is equivalent to the proportion of red color;
Y-axis color coordinates is equivalent to the proportion of green color. There is no Z-axis color map coordinates (ie the proportion of blue color), because the proportion of factor X + Y + Z = 1, Z coordinate values can be calculated that 1 a (X + Y) = Z.

According to the Committee established by the International CIE1931 color is shown in Figure 31. Chromaticity diagram of the arc of the points on the curve is the spectrum of various colors on the spectral locus is the spectral colors of the chromaticity coordinates. Red band in the lower right graph, the green band in the upper left corner, blue-violet band at the bottom left of Fig. Line below the figure part, that the line connecting 400nm and 700nm, is not on the spectrum, from violet to red line. Near map center C is white, the equivalent of noon sun light color, the color coordinates X = 0.3101, Y = 0.3162.
There is a chromaticity diagram based on the color of S, S by a straight line drawn through C to the spectrum locus O point (590nm), S is the dominant wavelength of color 590nm, where the color of the spectrum S of the color (orange). C points out a color to the spectrum locus distance that its color purity, that is, saturation. The closer the more impure colors C, closer to the more pure spectral trajectory. S points in the path from C to 590nm spectrum at 45%, so it's color purity of 45% (color purity% = (CS / CO)? 00. From any point of the spectral locus a straight line drawn through the C arrived opposite spectrum trajectory point, the color of this line at both ends of mutually complementary color (dashed line). from any point of paragraph purple dashed straight line through the C trajectory that arrived at the opposite spectrum, the non-spectral color spectral color to use the complementary color to represent . that is the complement of the non-spectral color wavelength of color followed by a C word, such as the 536G, the complement of purple is a 536nm green color.
CIE1931 chromaticity diagram has great practical value, any color, whether light color or surface color, can be calibrated out of the chromaticity diagram, which describes the color of the simple and accurate. For example, the color in order to ensure proper identification of signs and traffic safety control, in CIE1931 chromaticity diagram provides a specific range, which applies to all kinds of warning signals and color coded flags. Another example is in CIE1931 chromaticity diagram, introduced by the two colors can be mixed with the resulting variety of intermediate color. If Q and S are added to the S line Q drawn between the various colors, such as the T point, the C T reached through the color spectrum of 552nm, 552nm wavelength can be seen that T, tone color, and the T in C and 552nm spectral color to see its position between the percentage purity.

In practical applications, such as color TV, color photography (latex treatment) or other color reproduction systems need to select the appropriate red (R), green (G), blue (B) three primary colors used are white and the complex colors selected (R), (G), (B) the position in a chromaticity diagram form a triangle. Should be made (R), (G), (B) to include a larger area of the triangle as far as possible, while (R), (G), (B) spectral line trajectory should be as close as possible to reproduce relatively saturated red, green, blue color

Knowledge and performance testing product applications are as follows:

(1) soldering iron: iron (up to 30W) tip temperature does not exceed 300 ℃; welding time of less than 3 seconds; welding position at least 2 mm from the gel.

(2) Dip soldering: maximum temperature dip soldering 260 ℃; dip soldering time of less than 5 seconds; dip soldering position at least 2 mm from the gel.

Pin forming method:

(1) 2 mm from the gel necessary to bend bracket.

(2) Stent or fixture must be done by professionals.

(3) stent to be completed before the welding.

(4), stent placement and spacing of pins required to ensure consistency with the circuit board.

LED Installation

(1) Note that the arrangement of various types of external devices to prevent the polarity wrong. Not too close to the device and heating element, the working conditions should not exceed the prescribed limit.

(2) must not be the case of deformation in the pin installed LED.

(3) When the decision Kongzhong An installed, the calculation of good face and circuit board dimensions and tolerances so as not to pitch stand by excessive pressure.

(4) installation of LED, the construction of meaning with the guide sleeve position.

(5) in the welding temperature back to normal, it will have to avoid LED shock or by any external force.

Cleaning

When the chemicals must be particularly careful when cleaning gel, because some chemicals on the colloid surface damage and cause discoloration, such as TCE, acetone and so on. Available ethanol wipe, immersion time at room temperature does not exceed 3 minutes.

Working and storage temperature:

 LED LAMPS LED Topr-25 ℃ ~ 85 ℃, Tstg-40 ℃ ~ 100 ℃

led lights with the production because the threshold into the low, so many people who launched this project. But those who have experience or a way to identify, regular producers and the production of led lights with led lights with cottage version (ie within the rental depends on the products produced by manual operation) is a glance from the appearance out. Here to talk about how their eyes to identify the led lights with the quality of the good or bad:

1, see spot. led lamp with a regular manufacturer of led lights with the production of SMT chip technology is used, with solder paste and reflow process production. Therefore, led lights to bring the volume of solder joints with smooth and not many joints cylindrical arc from the FPC pad at the extension to the led electrodes. The cottage version of led lights with the uniform amount of solder joints, mostly a dot wrap welding foot, and have different levels of tin tip appeared, which is a typical phenomenon of manual welding.

2, see FPC quality. FPC copper and rolled copper sub-deposited two, Bonded Copper of copper foil is projecting, and look with the FPC, then the connection from the pad at the seen. Copper is the calendar closely, and FPC as a single entity, and can bend and will not appear any pad off phenomenon. Bonded Copper will appear if the pad bending too much off, when the temperature is too high maintenance can also cause the pad off.

3, see led lights with the surface cleanliness. If the use of SMT technology, the led lights, its surface cleanliness is very good, do not see any impurities and dirt. However, if hand-welding technology, the cottage version of led lights, no matter what the surface cleaning, and cleaning will be residual traces of the stain, while the surface of the FPC will be flux residue and solder residue.

4, look at packaging. led lights with the regular use of anti-static volume will reel packaging, usually 5 meters a roll or a roll of 10 meters, and then use anti-static moisture out and then seal bag. The cottage version of the led light with because of cost savings, while the use of recycled paper trays, and then there is no proof anti-static bags, look carefully to see the appearance of paper trays with clear labels and scratch marks left behind.

5, see label. led lights with regular paper trays bags and above will have a printed label, not the printed labels. The cottage version of the label is printed, while the specifications and parameters are not uniform.

6, see annex. led lamp with a regular there in the box with lights attached instructions and specifications, while also equipped with led lights with a connector or a deck; and cottage version of the led lights inside the box with no these attachments, as Some manufacturers, after all, could save the province.

Combined with the latest science and technology and the increasing flexibility of lighting, especially in a small space and low-key applications, first introduced led T5 fluorescent lamps are introduced. This high output and energy-saving products to ensure high quality and can meet market demand.
December 16, 2008-Marktech led Lighting Products, led supplier since 1982, introduced the led T5 fluorescent tubes, lighting schemes. 80 color rendering index and the design slightly, T5 is ideal for applications in many areas, including the display of general lighting or indirect lighting, wall lights, closet lights, as well as POP display backlight light source, and vending machines.
T5 fluorescent tubes operate at 24V DC, but also to low-voltage narrow viewing angle of 60 degrees and 120 degrees wide viewing angle, high-voltage version. Super bright led 3 color temperature currently used 3300K, 4200K and 6500K,, and from 1 to 5 feet of various length. The sale of each fluorescent tube with a metal mounting clip, so you can easily install. There are three installation folders to choose from, to suit a variety of different applications and situations. This small and streamlined management to meet almost all direct and indirect lighting needs, Marktech led Lighting Products believes that the answer is yes.
Marktech led Lighting supplier's CEO Mark Campito said: button for a variety of lights, switches, lights and display panel, super bright led is the first choice of long-term. T5 led fluorescent tubes basically the led than in the past played a broader role.
Marktech led Lighting Products is a supplier, very familiar with the industry. They have been in this industry over 20 years, able to provide customers high quality, high brightness, the price of led products favorably.
Our aim is to help customers save energy and costs. Through the safe and efficient for consumers, home or commercial use of lighting products to help customers save energy and costs.