6 brand LED downlight NVC depth evaluation

"Professional degree is not enough, too much imitation", "less original, mostly copy others' appearance, similar products too much, really cost-effective products less", "light effect, color, light control, glare control, landscape and decoration harmonious aspects, domestic manufacturers there is a certain gap between the...... this is an interview with reporters the lighting designer, most mentioned some problems about Chinese commercial lighting products LED.

The lamp is the most widely used in the field of commercial lighting lamps, therefore this period of evaluation, the evaluation room selects 6 industry's most representative China commercial lighting downlight manufacturers as the evaluation objects, in order to get a glimpse of the level of quality from the LED lamp "China made LED product status.

The current evaluation of the national optical products to be invited to the national quality supervision and Inspection Center for optical radiation as the authority of the third party testing agencies to test the data. 6 companies selected as brand companies: Huizhou Leishi Optoelectronic Technology Co Ltd (hereinafter referred to as "NVC"), Huizhou xidun Industrial Development Co. Ltd. (hereinafter referred to as "Sidon lighting"), Zhongshan Tang Shi Lighting Co. Ltd. (hereinafter referred to as the "stone soup lighting"), WAC Huage lighting (Shanghai) Co., Ltd. (hereinafter referred to as "WAC lighting) in Dongguan City, with lighting technology Co. Ltd. (hereinafter referred to as" love light "), Shanghai bright lighting technology Co. Ltd. (hereinafter referred to as" bright lighting ").

In LED commercial lighting applications, to create a good lighting environment for users, highlighting the performance of their products, and stimulate consumers to buy, creating opportunities for businesses is the core objective of lighting design, business logic must be followed. Therefore, commercial products in addition to light efficiency, light color and quality, the balance between light efficiency and light quality, LED lighting is a new point of consideration.

In this issue, the power factor, light efficiency, color rendering index, color temperature, color tolerance and beam angle are analyzed and evaluated:

Product appearance

The sample information

Product identification information

Note: the above data shall be provided by the national photoelectric product safety and quality supervision and Inspection Center

Although the product logo information can not be used to evaluate the quality of a product, but the higher the integrity of the information, the more convenient for consumers to choose products, but also more conducive to the use of security. The following evaluation is also part of the analysis is based on corporate logo information to compare, you can see the quality of the product quality control.

1 product identification details

Product identification, love lighting, Sidon lighting using screen printing (or laser) technology, lamps free stickers, which identifies the Sidon lighting content to meet the requirements of national 3C standard. In addition, NVC lighting, lighting huge stone soup are used stickers logo, no logo on the bright lighting.

2 sample drawing

NVC

Sidon lighting

Soup lighting

WAC Lighting

Love lighting

Bright lighting

The product appearance, the appearance of the 6 products are satisfactory, which form stable, huge lighting, + lighting work fine; the surface of Sidon lighting ring according to the demand change, more humane.

Two, evaluation data

(I) photoelectric parameters:

1 power (W)

Table 1: comparison of actual and nominal power

Note: the above data shall be provided by the national photoelectric product safety and quality supervision and Inspection Center

The 6 of the samples, with the measured power is lower than the nominal power of 11.67% lighting, bright lighting products without nominal power, the measured power of other 4 products and the nominal power floating value is relatively small, including lighting, lighting and Sidon lighting in the huge stone soup power control is more accurate compared with the other.

2 power factor

Table 2: comparison of measured power factor and nominal power factor

Note: the above data shall be provided by the national photoelectric product safety and quality supervision and Inspection Center

In commercial lighting, although the priority of the power factor is less than the light quality, it does not mean that the power factor is not important. High power factor, not only can save the electricity cost of investment, but also can reduce the voltage loss in power supply system, the load voltage is more stable, it is very important for commercial lighting to create a society stable energy saving.

6 products, power factor, lighting Sidon lighting with up to 0.9, and Sidon lighting is better, up to 0.99.

3 light effect

Table 3: sample light effect

Note: the above data shall be provided by the national photoelectric product safety and quality supervision and Inspection Center

With the gradual opening of the LED general lighting market, enhance the lm/$has become the focus of the industry as a whole and the focus of wrestling goals. Light efficiency is an important indicator to measure the energy saving effect of the product, which has an important impact on the cost of building the light environment, and is also one of the most important goals pursued by the owners.

The 6 products, compared with the light effect WAC is better than the other 5 lighting products, the luminous efficiency is 70lm/w, Sidon ranked second with 57 lm/w.

However, the level of light efficiency also has some constraints, such as color rendering index, in general, the higher the color rendering index, the light effect will be relatively low, there will be a certain degree of restraint. So let's take a look at the color rendering index.

(two) color parameters