The concept of eye protection lamp has appeared for a long time, and parents also attach great importance to it, after all, lighting is the most important link to create a learning area for the baby.
The eye protection lamp has been in the form of a table lamp before, and as the illumination range of the table lamp becomes larger and larger, the corresponding luminous area is also rising. It is also in the past two years that there has been a new product in the field of eye protection lamps, large street lamps, which are named because their height and shape are too close to common street lamps.
In the past few years of consumption downgrading, large street lamps have become popular in the sky, and a 3-6K product is indeed a bit incredible.
But also in that sentence, do you really need a big street lamp? What is the difference between a street lamp and a table lamp, and how should it be used? For less money, why not consider choosing a better-looking, equally excellent children's learning desk lamp?
This time, let's do a rational analysis and look at the street lamp and table lamp, which one to choose for children to learn?
The children's learning lamp that appeared this time came from BenQ's mindduo2.
In fact, there is one thing to understand here, that is, the origin of the big street lamp.
The original street lamp was not originally used as a children's learning lamp, the original street lamp, the design starting point was in the office scene of developed countries, used to supplement the ambient brightness, that is, its original user group was adult business people.
Later, the domestic marketing concept was changed, and it became a vertical eye protection lamp, which is the same as the early BMW mini was running rally, and the introduction of domestic vehicles became petty bourgeois and tall urban scooters.
The common lighting in home design is space lighting, task lighting, and accent lighting, and the functions are differentiated.
Large street lamps are more inclined to space lighting, which is also the original purpose of its design, throughout all the large street lamps on the market, the brightness of the upper light source is much stronger than the brightness of the lower lighting, which can meet the entertainment + environmental lighting needs of the room with poor lighting.
The children's learning desk lamp is completely designed with task lighting as the goal, which is suitable for the lighting needs of fine tasks such as studying, watching online classes, and doing handicrafts.
This is the original quote of the North American Lighting Engineering Association on layered lighting design, and if you are interested, you can search for the pdf version of this book.
As mentioned above, street lamps and table lamps belong to different lighting functions. The large street lamp cannot completely replace the table lamp, and the table lamp does not have some of the advantages of the large street lamp, you can choose according to your needs.
Whether it is color rendering, strobe, brightness, low blue light, these basic parameters, the two types of products are basically up to standard, do not worry about causing damage to children's eyes, of course, the premise is to choose big brand products.
The following is a comparison of several key indicators of street lamps & table lamps from the perspective of personal experience.
There are differences in shading design
Because the street lamp itself is designed to supplement the ambient brightness, it is necessary to take a bright and large light-emitting plate, which is basically a non-shading design, and some products do not have multiple disintegration (light) design, so the head-up light will enter the eyes, and the big-name products with good design will not irritate the eyes so much, but some products with deficient design will stimulate the eyes.
When children are engaged in reading, calculating, drawing, handicrafts and other focused tasks, if the glare light directly or indirectly hits the eyes, it will frequently interrupt the attention, and may even cause irreversible damage to the eyes of adolescents and children during their development.
China's "Performance Requirements for Reading and Writing Desk Lamps" also has clear requirements for shading, stipulating that the maximum brightness of light-emitting parts visible to the human eye needs to be less than 2000cd.
Some brands of children's learning desk lamps have a blackout design, which can well avoid light from entering the eyes, such as the full blackout design of BenQ mindduo2, which can well avoid light from entering the eyes and will not irritate the eyes. Does not irritate the eyes.
There is a difference in light distribution and daily placement and mobile experience
The large street lamp seems to be placed and inserted under the table at will, but there are still certain restrictions on the actual space, at least I found a lot of restrictions in use, and the table lamp does not have this problem.
The problem I encountered with the big street lamp may not be completely informative, but let's talk about it.
Most of the large street lamp heads are basically non-rotatable and can only be placed on the side of the desk, but in this way, the table with a width of more than 1 meter cannot be symmetrically covered.
The children's table lamp can be placed directly at the center of the back of the desk for symmetrical coverage. Make the core task area brighter and the non-core task area slightly darker, so that the child can focus on the central area and stay focused.
Some large street lamps have rotatable lamp heads, which can be placed behind the table to achieve symmetrical coverage, but the base will stretch out to block the feet, if it is a child, the impact may not be too large, but for **, it is somewhat uncomfortable.
The street lamp itself requires a base counterweight, so the base is very heavy and a little difficult to carry, especially for women and children with little strength.
The children's learning lamp is easy to move.
There are differences in color temperature adjustment
In order to ensure a sufficiently high color rendering index and low blue light characteristics, large street lamps often only make 4000K color temperature products, because the luminous area is huge, and the consistency of multi-color temperature is difficult to control, which limits the play of multiple scenes.
Because the luminous area of the children's learning desk lamp is small, the consistency is relatively easy to control, so it can be adjusted by multi-color temperature, and there is no pressure to use in multiple scenes.
In fact, children need different light atmospheres for learning, painting, and entertainment, and different color temperatures have different effects. The warm yellow light of about 3000K can create a sense of atmosphere and is suitable for entertainment use; About 4000k can improve work productivity and is suitable for computer use; The color temperature of about 5000K can improve memory and is suitable for focused study. This is also the reason why the street lamps are all 4000K color temperature, because it was originally designed for computer office scenes. If you want to use it for your child, it is best to be able to adjust the color temperature in multiple segments to meet the needs of multitasking.
There is a difference in budget and appearance
In terms of budget, the average budget of street lamps is higher than that of children's learning lamps.
Finally, it is the appearance, although the street lamp is not ugly, but it is by no means good-looking, the shape limits its appearance, for some consumers with higher aesthetics, it is the most unacceptable element, in the era when consumer aesthetics began to upgrade year by year, the appearance and integration into the home are also very important reference points.
From the above-mentioned requirements such as the elimination of stray light interference, reasonable distribution of light, and flexible adjustment of multiple tasks, BenQ's mindduo2 is more suitable for children's reading and writing homework, which is also the follow-up upgrade of BenQ's classic mindduo desk lamp.
The body and all accessories in the package,The installation guide is intimately attached to the base,BenQ mindduo2There are four colors,It fits the lively attributes of children's products very well,The color of this time is forest green,The other three colors are cloud white、Magic purple and ice and snow blue。
Compared with the large street lamps that are almost all white, the children's learning desk lamps can be selected in more colors, and the shapes are more lively and diverse, and the shape of the street lamps is almost the same.
Although the base is also a counterweight module, it does not need to be as outrageously heavy as a large street lamp.
It's easy to assemble and the overall presentation is good.
As a children's learning lamp, it has won the first mindduo series on the hot list of Tmall eye protection lamps for many years, and the second-generation design still maintains an excellent appearance design, with a good appearance, and the overall roundness is the main design language, with a two-stage adjustable lamp arm, with a 360-degree rotating base, which can meet the desktop environment of various scenes to the greatest extent.
The first section of the base comes with a USB-A power supply port on the side of the lamp arm, and the output specification is 5V 08a, which can charge some small digital devices.
Two adjustable knobs and locking devices, combined with the bulb joint, provide a flexible range of adjustment.
When encountering a storage cabinet above the desk, the large street lamp is basically impossible to place, and the BenQ mindduo2 relies on two lamp arms and ball joints, which can easily adjust the height and achieve multi-angle lighting.
In general, the adjustment is still very flexible, and it is suitable for more scenarios than large street lights.
The lamp head has been color-coded, with the logo and model on the left and the touch operation area on the right.
On the right is a rounded physical adjustment knob for adjusting the color temperature and brightness by touch.
Looking at the lamp head, you can't see the LED luminous lamp beads, the hidden light source design, with the sunken light guide plate + front eaves structure + gullwing reflectors on both sides, can achieve the maximum range of soft light irradiation effect, while not directly stimulating the eyes.
The two sensors in the middle are the human infrared sensor on the left and the light sensor on the right.
Rear view at a glance.
Let's take a look at mindduo2 in action and its stats.
Full shading design to eliminate glare interference
The design of mindduo2 hidden light source is based on the child's eye height as the standard, by strengthening the front eaves design of the lamp shell, and at the same time, the ** light guide plate is sunk inward, hidden in the lamp shell, covering the light in the direction of the eye, and the reflectors on both sides can also indirectly shade the light.
Children sitting in front of the desk and looking up can not see any luminous surface and direct light, the so-called full shading design, greatly reducing glare interference.
Turn off the lights to see the specific shading effect, and the light-emitting surface is indeed not visible from multiple angles.
Precise light control to form lighting zones
This table is 1 in widthAt 6 meters, the mindduo2 can cover about 1With a range of about 2 meters, the size of a normal children's learning table is so large, and such wide lighting can also meet the needs of parent-child reading.
MindDuo2 creates a bright field of view while also providing scientific light distribution. **Ultra-thin optical structure to create bright and focused direct light; The biplane reflective optics on both sides of the lamp head spread out a wide indirect light, similar to the wings of a pair of seagulls, and cast the light far on both sides of the table. This results in a light layering that creates a lighting zone that is designed to be more comfortable for the child's eyes and to help the child focus on the core task area in the middle.
The lamp beads are located in the rear, and you can also see that the center has the highest luminous brightness, which is the core area, and the brightness reflected on both sides is dark.
Powerful, multi-tasking and flexible
MindDuo2 front touch button, from left to right, seat detection, to achieve automatic light on/off; 30-minute timer for sedentary reminders; Book reading mode, 5300K cold white light, full of light and wide; Screen reading mode, to achieve 4000K warm color light, at the moment is a three-zone smart light type, reduce the ** light output, the screen is not reflective, and at the same time make up for the brightness on both sides, reducing the contrast glare with the environment; Color temperature adjustment, to achieve 3300 5300K color temperature adjustment; Brightness adjustment and desktop brightness indicator.
Multi-color temperature plus multi-angle adjustment, flexibility is still very strong, and compared with the vast majority of street lamps with only 4000K color temperature, mindduo2 can not only cope with common desktop learning, ** learning, or doing handicrafts, it is no problem at all.
Brightness & Spectral Testing
Let's measure the brightness and spectral data that everyone cares about, and the performance of mindduo2 is still very good.
This test is still in accordance with the latest national standard, the total size is 70 x 50cm rectangle, the central area is the center of the 50 x 30cm rectangle, the central area illumination uniformity needs to be 3, the total area illumination uniformity is less than or equal to 7.
3D printed squares were used to simulate the test, each square is 10cmx10cm in size, the yellow area simulates the central area, and the white area is the outer area.
The test height is 55cm from the desktop, which is almost the highest position of this children's desk lamp, and it can be slightly lower in actual use, but this height brightness test still exceeds the national standard.
The test tool is a spectral illuminance meter, which can effectively test the actual performance of the lamp.
3300k color temperature data
At 100% brightness, 55cm from the desktop, 3300K color temperature, center illuminance LX value is 1192, color temperature 3395K, color rendering index 974. Carefully observe the harmful blue waveform (440 460nm), and the control is very good.
At 50% brightness, the center illuminance lx value is 581, the color temperature is 3363K, and the color rendering index is still 974。
The national standard stipulates that the height is 40cm, the brightness of the table lamp within 30cm should be greater than 500lx, and the mindduo2 is at 55cm height, and the brightness exceeds the national standard value.
4000k color temperature data
At 100% brightness, the color temperature is 4000K, the center illuminance LX value is 1195, the color temperature is 4089K, and the color rendering index is 967. Harmful blue waveform (440 460nm), no abrupt peaks, good control.
At 50% brightness, the central illuminance lx value is 694, the color temperature is 4052K, and the color rendering index is 966。
5300k color temperature data
At 100% brightness, the color temperature is 5300K, the center illuminance LX value is 1175, the color temperature is 5349K, and the color rendering index is 961；At 50% brightness, the center illuminance lx value is 693, the color temperature is 5334K, and the color rendering index is 961。
Finally, the 44-point uniformity test at 4000K color temperature was sorted out, that is, the intersection position of each small square was repeated 3 4 times to test 44 intersections.
According to the new national standard, the minimum horizontal illuminance of AA level, the central area needs to be 500, the total area needs to be 250, the average brightness of the central area of mindduo2 is 994lx, and the uniform illumination value of the total area is 982lx, which is far beyond this standard, and the maximum brightness of 1195lx does not exceed the maximum brightness of 2500lx.
The lighting uniformity is calculated as the highest brightness in the center and the lowest brightness in the area, and according to this formula, the lighting uniformity in the core area is 128. The overall lighting uniformity is 227, both of which are smaller than the values of 3 and 7 of the new national standard, and the performance is very good.
Finally, a table is made to summarize the advantages and disadvantages of children's table lamps and vertical street lamps.
You can choose according to your needs, the overall performance of the BenQ mindduo 2 children's eye protection desk lamp is very good, whether it is the appearance design, or the brightness color rendering, the difficulty of adjustment, the irradiation range, or the characteristic highlight functions, have reached a very excellent level, if you are not very cold to the huge appearance of the vertical learning lamp, the budget is not so high, you may wish to consider BenQ's mindduo 2 children's eye protection desk lamp.