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Detailed explanation of the difference between white led and other light sources (the content is taken from the forum of semiconductor device application technology)
The difference between metal halide lamp and LED

When a customer intends to buy a piece of jewelry, you should pay attention to the factors that affect its value, such as color, size, lathe work, quality, design and so on. But no matter how beautiful jewelry is, it needs good lighting settings to shine, because it needs brilliance.

We know the color of the light emitted by the light source itself and the color reflected by the jewelry after the light is irradiated. Full marks are generally called "surface color". Except for jewelry with fluorescent or phosphorescent effect, jewelry itself is not luminous.

Appreciating natural light is the best source of natural gemstones. However, in actual sales, due to the limitation of the venue, enterprises often choose artificial lighting, which is the concern of jewelers. How to use appropriate light sources to show the value of jewelry is becoming more and more important. However, due to lack of experience or expert guidance, jewelers generally only notice the lack of brightness when decorating storefronts or counters, so the whole store feels gorgeous and magnificent, but ignores the proportional distribution of light sources. There is no difference in car body sales. Jewelry counters lack a sense of hierarchy. In addition to unnecessary waste of bright light, high temperature will also destroy the color of the object itself, especially some organic gems, such as pearls, corals, amber and so on. In addition, according to psychologists' research, dazzling lighting also has an impact on customers' mood and the sales staff of jewelry stores, but it also affects the jewelry traded.

When choosing jewelry store lighting, we need to consider factors such as light color, lighting brightness, flicker-free, temperature, color rendering, infrared ray, ultraviolet ray and so on. So of course, it is impossible to consider all the above factors. Generally, you need to focus on color temperature, brightness level and flicker. According to relevant data, the light with a color temperature of 3300K-5000K has the best display effect.

Enterprises pay special attention to the choice of light source, which can be distinguished by different lighting levels and the main flashing lights sold. The more obvious the reflected light, the more dazzling the treasures are. CRI is the correct color development of objects illuminated by light and clarity. High CRI jewelry has the characteristics of meticulous workmanship and true color.

The basic light source can have four elements: light color, illumination level, no flicker and color development. Believe in yourself, you can become a jewelry store lighting expert, and your company will benefit, with prosperous business and rolling financial resources.

Why not a jewelry metal halide lamp?

Results From the perspective of professional jewelry, many people in China like to create wealth together with square or round lighthouses and special-shaped metal halide bulbs (generally, long tubes above 10 cm are turned on for about 3-5 minutes, and then fully lit). This bad policy is to start the characteristics of metal halide under the policy. The full name of metal halide lamp: metal halide lamp, also known as "metal halide lamp", is a kind of high-pressure gas discharge lamp (high intensity as light source, arge lamp HID is characterized by that it cannot be turned on for at least 5- 10 minutes to reach normal brightness, and must be cooled to 15 minutes, so it can consume more time after turning on the power again and has low power consumption. If there is no power outage in China, besides improvement and loss, the operation can be very flexible.

Lighting affects the performance of metal halide lamps, color difference:

Metal halide lamps, metal halide gas discharge lamps, rather than incandescent bulbs, are usually mixed with several halogen compounds, such as iodine, indium, thallium, sodium and sodium. Thallium, a yellow light, emits green indium and blue rays. Because of the uneven consumption of halide in metal halide lamps, there is a change in color difference lighting, and the color will change to yellow, green and blue for a long time, which can be said to be very unstable. Not only the color brightness (light difference, light decay) of great light will be huge, because the brightness of HID lamps will decrease by about 20% after being used for about 100 hours (HID runs in normal cycle), but also the brightness and service time will be attenuated, which is a feature that all kinds of lamps no longer yearn for metal halide lamps with the same light source. On the other hand, the life of the light bulb must be known, otherwise it is unprofessional lampes businessman skill, I don't know.

The life of excellent light bulbs with average quality refers to the average life, not the average actual use time. It should also be based on the purpose of the installation environment. The average life expectancy of short-term use can be defined as the total hours when the magnetic flux of the HID lamp decays to 50% of the initial value. In other words, if an advertised metal halide assumes that the average life span of 5,000 hours is 5,000 hours, its light emission is only 50% of the initial value. In other words, at that moment, if the power supply is used too much, or the exchange flux between the initial light efficiency and color is only half, it is not just light color, so the life span of the light bulb should mean "economic life span" and "average life span" * 0.6. This session is 3000 hours, 5000 hours ×0.6 = 3000 hours, and the light bulb should be replaced immediately. Widely used in jewelry industry, in Mongolia, lighting management principles are often ignored or the space is narrow. Here, ladies, the cost of jewelry lighting should be very well understood!

General jewelry stores in China are like ordinary halogen tungsten lamps and metal halide lamps, plus diamonds irradiated by white light. Because there was no professional jewelry lamp in the early days, jewelry and metal halide of GemLux jewelry bulb produced by R&D can be used, but the penetration is stronger than that of the poor. Light tends to reflect the refraction of light, refracted light. Because light can't run on gems, besides the above-mentioned cost, the most important reason is that the demand for HID lamps is that only CRI fluorescent coating with high color rendering on gems emits a small amount of spectrum to represent its color performance, and the unfavorable quality of light sources between media can never satisfy the continuity of a jewelry store, so we must accept new concepts to surpass our competitors.