Comparison of 5 LED desk lamps _ which is better?

Throughout the market, the table lamps range from tens to thousands of yuan. In addition to their differences in appearance and materials, manufacturers also make a big fuss about the light source when propagating, such as "0 strobe", "close Natural light, "no blue light", consumers are often confused by these terms when purchasing. In short, these terms are used to describe lighting comfort.

"What?! There is still comfort in the light?" asked the people who were not aware of it. Once upon a time, the author was also one of the people who had eaten melons until our department moved to a new office... It is no exaggeration to say that the fluorescent tube on the head of the author can definitely flash my eyes of wisdom. At this point, I am I understand that there is a clear difference between the lamp and the lamp.

Ever since, we have collected 5 LED desk lamps, from left to right:

1 89 yuan good vision TG2309-WH eye protection table lamp

2 169 yuan meter home LED smart table lamp

3,359 yuan Philips crystal bright LED table lamp

4 1499 yuan Edward doctor angel light LED eye light

5 1899 yuan BenQ WiT eye protection table lamp

We will conduct a horizontal evaluation of these 5 table lamps from the aspects of product appearance, ease of use, brightness and illumination range. As for why the stroboscopic problem that everyone cares about is not in the cross-testing dimension, the strobe of the lamp is caused by the AC circuit. The lamp bead used in the LED lamp is a light-emitting diode. The characteristic of the diode is that the current is not allowed to be flipped. Therefore, the diode must be DC and there is no exchange to say.

Five table lamps

First, the appearance of work

The good eyesight lamp is white on the outside, gray on the inside, and ABS plastic on the body. In the actual use process, Xiaobian found that there are several burrs on the body of the good vision table lamp. In addition, due to the tightness of the rotating shaft, the angle of the table lamp is not smooth, and sometimes a "beep" sound is emitted, and the detail processing is poor.

The Mijia table lamp is white in white, the cylindrical column and the lamp arm are made of aluminum alloy. The shaft of the connection between the lamp tube and the lamp arm is made of all-metal material, the damping is moderate, and the angle is smooth. The surface of the lamp base is treated in two ways: the central part is mirrored and the rest is a matte surface, making the base more textured. Excellent attention to detail.

Philips Jingliang LED table lamp adopts aluminum alloy brushed silver process and frosted PVC surface to make the product more textured. The lamp arm adopts upper and lower double-axis structure, moderate damping, complete folding, and excellent overall workmanship.

Edward's Angel Light LED eye protection lamp shell is mainly made of imported ABS plastic, aluminum alloy lamp arm for sanding and painting. When the angle of the lampshade is adjusted at a small angle, the lampshade cannot be fixed and will fall slightly.

The BenQ WiT eye-protection lamp body is made of aerospace aluminum alloy, and the screw at the shaft is made of zinc alloy. The BenQ WiT eye protection lamp is tightly closed and requires both hands to complete the angle adjustment.

It can be seen that the price of the product is directly proportional to the design and the materials used, especially in terms of detail processing.

The convenience of dimming performance and angle adjustment can distinguish whether the user can meet the diversified needs in the process of use.

In terms of button identification, the Mijia table lamp is more careful. The disassembly of the outer box base is accompanied by a description of the instructions, which is very intuitive to tell the user how to use. Although the base of the good vision lamp is attached with a round sticker, it only tells the user the dimming performance, and does not tell the user the specific adjustment method. If the user does not view the instruction manual, he or she needs to explore it.

It can be seen that the five table lamps participating in the horizontal evaluation have good angle adjustment ability. Among them, because BenQ WiT table lamp adopts three-stage structure, it is almost universal adjustment, which can meet more diverse scene requirements. Since the millet column is fixed, the lampshade can only be adjusted up and down by 120 degrees.

In terms of dimming performance, Philips has only 5 brightness adjustments and no color temperature adjustment. Dr. Edward used a three-speed brightness color temperature synergy adjustment. Mijia and BenQ also use stepless dimming function to provide more detailed brightness adjustment.

Third, illumination

Illuminance is a direct parameter that measures the lighting effect of a desk lamp and determines whether the desk lamp is bright. According to GB/T 9473-2008 "Reading and writing operation table lamp performance requirements", the center of the vertical projection point of the geometric center of the light exit of the lamp, the AA level of the illumination at a distance of 30cm from the center of the circle should be no less than 500lux, and the A level should be Not less than 250 lux. The illumination AA level at a radius of 50 cm from the center of the circle shall not be less than 300 lux, and the A grade shall be not less than 150 lux.

We first measured the length of the exit geometry of the five lamps and marked the center position.

Good vision table lamp outlet length 15.5cm

Mijia table lamp light exit length 22.4cm

Philips table lamp outlet length 13cm

Dr. Edward's light source diameter 23.4cm

BenQ table lamp light exit length 32.3cm

Then, according to the length of the exit port geometry of the five lamps, the center point is determined, and the vertical projection of the center point is taken as the center, and the illuminance meter is used to measure the radius of 30 cm from the side of the human eye. The other light sources need to be turned off during the measurement.

All the photos in the illuminance test were taken by Canon 5DIII. The parameters are shutter 1/20, aperture 4.0, white balance for sunshine, all photos are original, only cropping, the test results are as follows:

1 Good vision table lamp 30cm illumination is 407lux, 50cm illumination is 85.4lux.

Good vision table lamp illumination

The 2 meter table lamp has a 30cm illumination of 265lux and a 50cm illumination of 90.3lux.

Meter lamp illumination

3 Philips table lamp 30cm illumination is 309lux, 50cm illumination is 98.1lux.

Philips table lamp illumination

4 Edward's desk lamp 30cm illumination is 268lux, 50cm illumination is 89.3lux.

Edward's desk lamp illumination

5 BenQ table lamp 30cm illumination is 808ux, 50cm illumination is 369lux.

BenQ table lamp illumination

In order to facilitate the visual comparison, the illuminance results of the five lamps are summarized in the following table:

As can be seen from the above figure, only the BenQ WiT LED eye-protection lamp with a price of 1899 yuan has reached the AA standard specified in GB/T 9473-2008 "Reading and Writing Operation Lamp Performance Requirements" at 30cm and 50cm. The Edwardian LED eye-protection lamp, which is also priced at a thousand dollars, has just reached the standard.

Fourth, the range of illumination

The illumination range of the desk lamp can not be given the most intuitive result if it is viewed by glasses alone. Therefore, we also use the illuminance meter to measure: push the illuminance meter to the far point from the vertical projection point of the center of the luminaire geometry. The value on the illuminance meter is displayed as 0. The table lamp is the highest brightness during the test.

1 89 yuan good vision TG2309-WH eye protection table lamp: 76.4cm

2 169 yuan meter home LED smart table lamp: 96.5cm

3,359 yuan Philips crystal bright LED table lamp: 91cm

4 1499 yuan Edward doctor angel light LED eye light: 90cm

5 1899 yuan BenQ WiT eye protection table lamp: greater than 150cm (the total tape measure is only 150cm)

It can be seen that the BenQ WiT eye protection table lamp has the farthest illumination range.

V. Summary

In this horizontal review, we evaluated 5 table lamps from four aspects: appearance, ease of use, illumination and illumination range. According to the influence on vision, the illumination and illumination range accounted for a large weight, ease of use and external light. Workmanship has a lower weight.

The 1899 yuan BenQ WiT eye-protection lamp has an absolute advantage in terms of illumination, illumination range and ease of use, while the Edwardian Angel Eye Lights, which are also priced at a thousand dollars, perform very well.

The 359 yuan Philips Jingliang LED eye-protection lamp mainly focuses on its brand effect, and it is not in a position to be inferior in terms of performance, which coincides with its pricing. The illuminance is not as good as 89 yuan, and the illumination range is lower than the 169 yuan meter. Even when more and more lamps can adjust the color temperature, it only has 5 brightness adjustments, which can't satisfy the users. Kind of use requirements.

Let's take a look at two of the five lamps, the low-cost desk lamp, the Mijia table lamp and the good vision table lamp. The good vision table lamp triumphed over the Mijia table lamp and Dr. Edward, but the difference was in the details processing, but the ultra-low price of 89 yuan with excellent light source performance performance?

Based on the actual performance of the five table lamps in this horizontal review, the most recommended lamp for the author is the Edwardian Angel Eye Light, which has serious money suspicion, and the Philips Jingliang Eye Light, which is based on brand marketing.

The recommended table lamp is the BenQ WiT eye protection lamp and the good eyesight TG2309-WH eye protection lamp. The price of BenQ WiT eye-protection lamp determines that it is a niche product. If you are a designer and business person who needs to work for a long time and have certain spending power, let it bring you more comfort. Work environment. Good eyesight TG2309-WH eye protection lamp is undoubtedly the king of cost-effectiveness in these 5 table lamps. It does not talk about the appearance, its light source performance is second only to BenQ, it is the best choice for students to study at the desk.