C

When selecting a table lamp for extended reading, even light distribution is a key factor. Even light reduces eye strain caused by frequent adaptation to changes in brightness, providing a comfortable reading experience.

Option A: A table lamp with light concentrated in the central area and darker edges causes the eyes to constantly switch between the bright central text area and the dim edge area while reading, easily leading to visual fatigue. For example, when reading a wider book, the edges of the pages may be difficult to see clearly due to insufficient light, and prolonged use of such a table lamp for reading can have adverse effects on vision.

Option B: A table lamp with distinct light spots and alternating light and dark areas causes extremely unstable light distribution in the reading area. Under such frequent changes in light intensity, the eyes must constantly adjust pupil size to adapt to the light changes. Prolonged use increases eye strain, leading to visual fatigue and potentially causing vision deterioration, making it unsuitable for extended reading.

Option C: table lamps with professional optical design ensure that light is evenly distributed across the entire reading area. Whether it is the center or edges of a book, text is clearly visible, eliminating the need for frequent adjustments, thereby effectively alleviating visual fatigue and providing a comfortable, stable lighting environment for extended reading. This makes them an ideal choice for prolonged reading.

Option D: table lamps with scattered light but uneven brightness, where some areas are too bright and others too dark, cause the eyes to repeatedly adapt between overly bright and dark areas. This not only affects the reading experience but also harms the eyes. Overly bright areas may cause glare, stimulating the eyes, while overly dark areas make text difficult to read, making prolonged reading unfavorable.

C

For those engaged in detailed drawing work, choosing a flicker-free table lamp is crucial. Flickering light can cause eye fatigue and dryness, and prolonged exposure to flickering light may impair vision. Flicker-free table lamps provide stable lighting, ensuring visual comfort during work.

Option A: A table lamp that shows noticeable flickering stripes when photographed with a smartphone camera indicates severe flickering issues. Working under such lighting conditions requires the eyes to constantly adjust to the flickering light, leading to fatigue, reduced concentration, and decreased efficiency in precision drawing. It is also detrimental to eye health and unsuitable for precision drawing tasks.

Option B: A table lamp that exhibits slight flickering at low brightness levels may appear normal at high brightness, but low brightness is a common usage scenario. For example, in dimly lit environments at night, users may adjust the lamp brightness downward, and the slight flickering at lower brightness levels can still cause eye strain. Prolonged use can accumulate fatigue and impair vision, making it an unsuitable choice for detailed drawing tasks requiring prolonged concentration.

Option C: A table lamp that achieves flicker-free operation through high-frequency electronic ballasts or similar technologies, providing stable and continuous light. During detailed drawing work, stable light allows the drafter to observe details more clearly, avoiding visual interference and fatigue caused by light flickering, thereby improving drawing quality and efficiency while also better protecting the eyes. This makes it an excellent choice for detailed drawing work.

Option D: table lamps that occasionally experience momentary flickering, though not continuous, can still irritate the eyes. During detailed drawing, where concentration is high, momentary flickering may distract the user, disrupt workflow, and repeated instances of flickering can accumulate to have adverse effects on eye health, making them unsuitable for prolonged detailed drawing tasks.

C

When using a table lamp in a bedroom, whether for creating ambiance or nighttime reading, light that closely resembles natural light can make people feel more comfortable and relaxed, reducing eye strain. Choosing a table lamp with light that closely resembles natural light can better meet the diverse needs of a bedroom setting.

Option A: A table lamp with a blue light and high color temperature. The blue light from high color temperatures can make people feel cold and excited, which is not conducive to creating a relaxing atmosphere in the bedroom. At night, blue light may also inhibit the secretion of melatonin, affecting sleep quality. Prolonged use of such lamps can cause eye fatigue and is not suitable for use in bedrooms.

Option B: A lamp with a yellowish light and low color temperature may create a warm feeling, but the low color temperature may result in overly dim lighting. During reading, the clarity of text may be affected, leading to visual fatigue and failing to meet the brightness and clarity requirements for nighttime reading. It is also not ideal for the comprehensive needs of a bedroom.

Option C: table lamps with a special spectrum design that simulates natural light have light characteristics similar to natural sunlight. In a bedroom, they create a comfortable and natural atmosphere, helping the mind and body relax. When used for nighttime reading, the natural light reduces eye strain, making text appear clearer and reducing visual fatigue, while also not adversely affecting sleep. This makes them an ideal choice for bedroom use.

Option D: A table lamp with unstable light color that may change color. Unstable light color can cause visual discomfort, disrupting both ambiance creation and reading. In a bedroom, which requires a comfortable and stable lighting environment, light color changes can disrupt the overall ambiance and are detrimental to eye health, making it unsuitable for use in bedrooms.

D

For students, prolonged study requires good lighting conditions. table lamps with uniform light and no flickering can effectively reduce eye fatigue and protect vision. When selecting a table lamp, prioritize those that possess both of these characteristics.

Option A: A table lamp with uneven light distribution and noticeable flickering can cause significant harm to students' eyes. Uneven light forces the eyes to constantly adjust to changes in brightness, while flickering further strains the eyes. Prolonged exposure to such lighting can quickly lead to eye fatigue, dryness, and even vision problems like myopia, severely impacting learning performance and overall health.

Option B: table lamps with relatively uniform light but slight flickering at high brightness. While the light uniformity is acceptable, the slight flickering at high brightness still affects the eyes. Students may adjust the lamp brightness according to environmental lighting and task requirements. When the lamp is at high brightness, the flickering becomes noticeable, and prolonged use is detrimental to eye health, making it not the optimal choice.

Option C: A table lamp with uneven light distribution but no flickering. While it addresses the flickering issue, the uneven light distribution still places a burden on the eyes. During reading and writing, the eyes constantly switch between different brightness zones, leading to visual fatigue and failing to provide a comfortable, stable lighting environment for prolonged study.

Option D: A table lamp equipped with an advanced optical system and flicker-free technology, providing uniform and stable light, offers ideal lighting for students. Uniform light ensures consistent illumination across the entire study area, while the flicker-free feature prevents eye fatigue caused by light flickering, helping students maintain a good learning state and protect their vision. This makes it a suitable choice for prolonged study sessions.

D

Working as a copywriter involves prolonged exposure to text, requiring a comfortable lighting environment to reduce eye strain. Choosing a table lamp with light close to natural light and no flickering provides optimal visual conditions for work and protects eye health.

Option A: A table lamp with flickering and cool light. Flickering directly causes eye fatigue, while cool light (high color temperature blue light) not only makes people feel uncomfortable but may also affect mood and efficiency during work. Prolonged exposure to such light can cause double harm to the eyes, leading to dryness, soreness, and other issues, which can significantly damage vision and is unsuitable for text editing work.

Option B: A table lamp with no flickering but a reddish light color and poor visual effects. While it addresses the flickering issue, the reddish light reduces text contrast, affecting reading clarity. Prolonged exposure can cause eye fatigue. Additionally, this unnatural light color does not contribute to a conducive work environment and fails to meet the quality requirements for prolonged text editing work.

Option C: A table lamp with occasional mild flicker and light similar to natural light. While light similar to natural light is beneficial for the eyes to some extent, occasional mild flicker can still affect eye health. During prolonged work, even mild flicker can accumulate and cause visual fatigue, making it difficult to maintain an efficient work state and failing to fully meet the requirements of text editing work.

Option D: A table lamp that achieves flicker-free lighting through professional technology and has a spectrum close to natural light. It provides stable, flicker-free lighting to prevent eye fatigue caused by flicker, while also simulating natural light to make text appear clear and comfortable, reducing visual fatigue. Working on text editing tasks for extended periods under such lighting effectively protects the eyes and improves work efficiency, making it the most suitable choice for text editing work.

C

When using a table lamp in a home reading corner, comfortable lighting is key. A table lamp with even light distribution and a color temperature close to natural light can create a relaxing reading atmosphere while protecting your eyes and enhancing the reading experience.

Option A: A table lamp with uneven light and high color temperature. Uneven light causes the eyes to constantly adjust while reading, leading to fatigue. The high color temperature (blue light) can make people feel irritable, making it difficult to relax and enjoy reading, and may also harm the eyes, making it unsuitable for leisure reading.

Option B: A table lamp with even light but low color temperature and dim light. Although the light is evenly distributed, the dim light makes text difficult to read, increasing eye strain and causing visual fatigue during prolonged reading. It also fails to create a comfortable, bright reading environment and does not meet the requirements for leisure reading.

Option C: A table lamp with an innovative optical structure that provides uniform light and a spectrum close to natural light. The uniform light ensures that the entire reading area is clear and bright, while the spectrum similar to natural light makes text appear more natural and comfortable, as if reading under sunlight. This lamp effectively reduces eye fatigue and creates a warm, comfortable reading atmosphere, making it ideal for use in a home reading corner.

Option D: A table lamp with uneven light distribution and unstable color temperature. Unstable lighting conditions severely impair the reading experience. Uneven light and fluctuating color temperature can cause eye discomfort, making it difficult to focus on the reading material, and also disrupt the relaxed and comfortable atmosphere of a leisure reading corner, making it unsuitable for leisure reading.

D

When a table lamp needs to meet multiple scene requirements, it is crucial to choose a product with uniform light, no flickering, natural light, and adjustable color temperature. Such a table lamp can adapt to different scene requirements for light, protect family members' eyesight, and enhance the user experience.

Option A: A table lamp with uneven light distribution, flicker, and a single color temperature has multiple serious issues. Uneven light distribution, flicker, and a single color temperature fail to meet the needs of children studying for clear and stable light, adults working for comfortable light, or the family relaxing and entertaining for a warm and cozy atmosphere. Additionally, it can harm the eye health of family members.

Option B: A table lamp with relatively uniform light distribution but noticeable flickering and non-adjustable color temperature. While the light distribution is acceptable, the noticeable flickering can cause significant eye strain, especially during prolonged study sessions for children. Additionally, the non-adjustable color temperature cannot adapt to different scenarios, failing to meet the requirements for various usage scenarios.

Option C: A table lamp with no flickering but uneven light distribution and a limited color temperature adjustment range. The absence of flickering is its advantage, but uneven light distribution can lead to poor visual experience and eye fatigue during use. The limited color temperature adjustment range also fails to meet the diverse requirements for lighting ambiance and brightness across different scenarios such as studying, working, and leisure activities.

Option D: A table lamp with even light distribution, no flicker, and a wide color temperature adjustment range that closely resembles natural light. The even, flicker-free light provides a stable and comfortable lighting environment for children's study and adult work, effectively protecting vision. The wide range of color temperature adjustment, which is close to natural light, can be adjusted to suitable light for concentration when children are studying, provide efficient lighting when working, and create a warm and relaxing atmosphere for the whole family to relax and entertain, fully meeting the needs of various scenarios and making it the best choice.

D

For painting, accurate color presentation and a comfortable visual environment are crucial. Choosing a table lamp with uniform light, no flickering, color temperature close to natural light, and finely adjustable brightness can provide ideal lighting conditions for painting and help creators perform better.

Option A: A table lamp with flickering light and uneven brightness. The flickering light can distract the creator's attention, causing eye fatigue, while uneven brightness can result in inconsistent lighting in the painting area, affecting the judgment of color and details. Creating under such lighting conditions makes it difficult to ensure the quality of the work and may also harm the eyes. Prolonged exposure to flickering light forces the eyes to constantly adjust pupil size to adapt to light changes, easily leading to visual fatigue, which in turn affects concentration and patience during creation, making the painting process difficult and inefficient.

Option B: A table lamp with fixed brightness, a cool color temperature, and uneven light distribution. The fixed brightness cannot be adjusted according to creative needs or ambient light conditions, and the cool color temperature may cause color inaccuracies, affecting the creator's ability to accurately capture true colors. Uneven light distribution also makes the painting process difficult and hinders the smooth progress of creation. For example, when painting warm-toned works, cool light can cause creators to misjudge the saturation and brightness of colors, resulting in color distortion in the final work. Additionally, uneven light can cause certain areas of the painting to be too bright or too dark, interfering with the creator's judgment of the overall lighting relationships in the composition.

Option C: A table lamp with no flickering and adjustable brightness but yellowish light. While this option addresses the flickering issue and allows brightness adjustment, the yellowish light causes colors to appear distorted, making it difficult to accurately judge the true effect of colors during painting. This is particularly problematic for painting creations with high color accuracy requirements, as such lighting can severely impact the quality of the artwork. The yellowish light casts a yellowish tint over all colors, making vibrant hues appear dull and murky. Creators struggle to distinguish subtle color differences, leading to color-matching errors and failing to achieve the desired artistic effect.

Option D: A table lamp with uniform, flicker-free light, a color temperature close to natural light, and adjustable brightness. The uniform, flicker-free light provides a stable and comfortable visual environment, reducing eye strain. The color temperature, which is close to natural light, allows creators to see colors as they truly are, aiding in accurate color mixing and painting. The adjustable brightness can be tailored to different stages of the creative process and environmental requirements, making it an excellent choice for painting. When drawing detailed sections, you can increase the brightness to observe the image more clearly; when reviewing the overall work or setting the mood, you can adjust the brightness appropriately. The color temperature close to natural light ensures color accuracy, allowing creators to accurately reproduce the color world they want to express, thereby creating higher-quality paintings.

D

When selecting a reading lamp for the elderly with declining vision, it is essential to prioritize the comfort, uniformity, and eye-protection properties of the light. A lamp with uniform, soft light without flickering, a color temperature close to natural light, and adjustable brightness provides a safe and comfortable reading environment for the elderly.

Option A: A table lamp with glaring light, extremely high brightness, and flickering. Excessively high brightness can directly stimulate the already fragile eyes of the elderly, while flickering can exacerbate eye fatigue and discomfort. The eyes of the elderly have poor adaptability to strong and unstable light. Prolonged reading under such lighting conditions not only causes discomfort such as eye pain and dryness but may also accelerate vision loss and cause irreversible damage to the eyes. For example, glaring light may cause the elderly to experience glare reactions, making it difficult to see the content of books clearly and frequently leading to reading difficulties.

Option B: A table lamp with dim lighting, low color temperature, and a small illumination area. The dim light makes it difficult for the elderly to see the text on the book, increasing reading difficulty. Prolonged straining to read can lead to excessive eye fatigue. The limited illumination area also restricts the field of view during reading, resulting in a poor reading experience. While the low color temperature creates a warm atmosphere, it may reduce text legibility in reading scenarios, further impairing reading effectiveness. For example, when reading books with small fonts, dim light can make the text appear blurry, forcing the elderly to lean closer to the book to see clearly. Maintaining this posture for extended periods can lead to neck and eye issues.

Option C: A table lamp with uneven light distribution but no flicker and moderate color temperature. Uneven light distribution causes the eyes to constantly shift between bright and dim areas during reading, increasing the eyes' accommodation burden. Even if the color temperature is appropriate and there is no flickering, uneven light distribution can still negatively impact vision, leading to visual fatigue during reading and making prolonged reading difficult. For example, when the eyes alternate between bright and dim areas during reading, the eye muscles frequently contract and relax, which can cause symptoms such as eye strain and pain over time.

Option D: A table lamp with uniform, soft, flicker-free light, a color temperature close to natural light, and adjustable brightness. The uniform, soft light ensures comfort for the elderly during reading while avoiding eye strain. The flicker-free feature reduces the risk of eye fatigue, the color temperature close to natural light ensures clear and easy-to-read text, and the adjustable brightness function allows for customization based on ambient light conditions and reading needs. Whether adjusting the brightness down during daytime when light is abundant or up during nighttime when light is dim, this lamp provides the most suitable reading illumination for the elderly, making it an ideal choice for caring about their visual health. Such a table lamp effectively reduces the visual strain on the elderly during reading, allowing them to enjoy comfortable and healthy reading time.

D

Children are in a critical period of visual development. When selecting a table lamp for learning, it is essential to strictly consider the protective role of light quality on vision. A table lamp with uniform light, no flickering, color temperature close to natural light, and intelligent dimming functionality can comprehensively protect children's vision and provide high-quality lighting for learning.

Option A: table lamps with noticeable flickering and fluctuating brightness. The intense flickering and unstable brightness can cause significant harm to children's eyes, which are still developing. Although children have strong eye adjustment capabilities, prolonged exposure to flickering light can cause rapid eye fatigue, leading to myopia, astigmatism, and other vision problems. Fluctuating brightness can also disrupt children's attention and impair learning efficiency. For example, when doing homework, flickering light makes it difficult for children to concentrate on their books, leading to frequent writing errors. Prolonged use of such table lamps is extremely detrimental to children's vision and academic performance.

Option B: table lamps with fixed brightness, uneven light distribution, and cool color temperature. The fixed brightness cannot adapt to different ambient light conditions or learning scenarios, while uneven light distribution forces children to constantly adjust their eyes during reading and writing, increasing visual fatigue. The cool color temperature can make children feel uncomfortable and may also affect their mood and sleep quality. For example, when studying at night, cool light can keep the brain in an excited state, making it difficult to relax, which in turn affects sleep and indirectly impacts the next day's learning performance. Additionally, uneven light distribution can cause parts of the book to be too bright or too dark, making it difficult for children to see the text clearly and affecting learning outcomes.

Option C: A table lamp with no flicker but a warm light color and a limited brightness adjustment range. While this option addresses the flicker issue, the warm light color can cause color distortion, affecting children's ability to accurately perceive color information in study materials. The limited brightness adjustment range also fails to meet children's varying lighting needs at different times and in different environments, such as the significant difference in brightness requirements between daytime and nighttime, making this lamp unable to provide appropriate lighting. The yellowish light makes the colored patterns and text on books appear blurry, requiring children to strain their eyes to read, which can lead to eye fatigue.

Option D: A table lamp with uniform, flicker-free light, a color temperature close to natural light, and intelligent dimming functionality. The uniform, flicker-free light creates a stable and comfortable learning environment for children, reducing eye fatigue. The color temperature close to natural light ensures accurate color reproduction, helping children accurately identify color information in their study materials. The smart dimming function automatically adjusts brightness based on ambient light conditions, providing the optimal light intensity for children whether it's daytime or nighttime, comprehensively protecting their vision and enhancing their learning efficiency. For example, when ambient light weakens, the table lamp automatically increases brightness; when ambient light strengthens, it automatically reduces brightness, always maintaining optimal lighting conditions, making it an excellent choice for children's study lamps.