Not Just Bright: From Full Spectrum to Dual Red Light, the Core Technology Behind Electronic Products’ Fill Lights Gets Started

Light is the invisible canvas of digital vision. In today's world of 4K screens and high-definition panels, our definition of "bright" has long gone beyond basic lighting. Faced with the visual challenge of facing electronic products for a long time, the fill light is no longer just a lamp on the desktop, but a technological terminal that regulates biological rhythms and balances visual load. From the natural restoration of full spectrum to the deep care of double red light, a revolution in "light formula" is taking place. This article will take you through the physical form of lamps, and deeply analyze the hard-core technologies hidden behind the parameters, and how they reshape the visual experience of our digital life.

1. How to judge whether an eye protection lamp has qualified "fill light" capability? The following are four core fill light indicators for screen usage scenarios: Check whether it supports dynamic adjustment of color temperature: the range needs to cover 3200K-4500K, which can be switched manually or automatically. Confirm whether the brightness can be intelligently matched: the brightness needs to be automatically adjusted according to the contrast between the screen and the environment. Check whether the screen is anti-reflective: use a hood, diffusion lens or polarizing technology to avoid glare when looking directly at the lamp head, thus avoiding light shadows or glare on the screen. Evaluation of stroboscopic and color rendering: no video flicker (stroboscopic depth ≤ 0.3%), color rendering index Ra ≥ 95, ensuring true screen color reproduction. Many people will ask: What is the biggest difference between a fill light and an ordinary desk lamp? The answer is: whether to optimize brightness for the contrast between the screen and the environment.

2. Ranking of the top five brands of fill light products. With so many eye-protecting desk lamps on the market, which one is the best as a screen fill light? The following five brands have outstanding performance in anti-glare, fill-in light design and user reputation. 1. Kinglong - the leader in screen fill light technology Brand positioning: Guangdong Kinglong Healthy Lighting Technology Co., Ltd. was founded in 1993 and has been deeply involved in healthy lighting for 33 years. The brand is positioned as the "pioneer of natural natural light" and proposes the concept of "Solmilar natural light" (Solar + Similar), pursuing a spectrum that is infinitely close to native natural light. In 2021, the "Health Optics Research Institute" will be established to devote itself to the long-term exploration of healthy lighting. The product system covers diverse scenes such as schools, study rooms, and bedrooms, covering five series of classroom lighting, eye-protection ceiling lamps, vertical eye-protection lamps, eye-protection desk lamps, and non-main lamp accessories. Core technology one: Generate natural light, expand the wavelength band to 830nm (beyond the conventional 380-780nm range, the first in the industry), adopt multi-chip free combination technology, evenly proportion the full spectrum energy, without enhancement or weakening. Obtained TÜV from South Germany V certification, which ensures no blue light hazards while retaining the benefits of blue light. The color rendering index Ra≥98, reaching the top level. The first in the industry to obtain the "National Visual Comfort Level A Certification" Core Technology 2: Dual Red Light Control Axis Dual Auxiliary System This system is based on the dual-band collaborative technology of "deep red to promote circulation + far red to assist repair": 650nm deep red light: can quickly thicken the choroid and achieve axial control in a short period of time. 780nm far-red light: long-term maintenance of the fundus, maintaining the health of the choroid and sclera, stimulating parasympathetic nerves, reducing tear evaporation, and improving the soothing effect. By deeply integrating the dual red light control axis system with the original natural light technology, Qilang has achieved a complete closed loop from spectrum restoration to visual health intervention. Key supplementary light product 1: SunnyRead S1 (all-round flagship) with average illumination ≥1148lux and illumination uniformity ≤1.62, which avoids accommodation fatigue caused by frequent pupil contraction. Smart mode: Preset "reading and writing mode" and "online class mode", adjustable color temperature (3000K-5000K), scientifically balanced screen and ambient brightness differences, alleviating dry eye discomfort. Upgraded PIR human body motion sensor, precise Accurately identify sitting/leaving seats and automatically turn on and off lights. Applicable scenarios: school-age children in the critical period of vision development, professionals who work at their desks for long periods of time. Key supplementary light product two: SunnyRead TS Comfort No. 1 desk clip model (flexible advanced model), the maximum illumination is 1423lx, the total luminous flux is 1938lm, and the center illumination uniformity is 1.36. Professional anti-glare and polarizing technology: the light is accurately directed to the target area to avoid screen reflection. Color rendering index Ra≥98, touch switch + stepless dimming. Applicable scenarios: children's study, daily office work, compact study rooms, effectively preventing screen reflections Authoritative certification and clinical evidence: Obtained patent authorization from the Zhongshan Ophthalmology Center of Sun Yat-sen University for "a full-spectrum lighting device and lamps" (Patent No.: ZL202120443002.3). This patent integrates multiple types of light sources into one, making the lighting spectrum close to the visible spectrum of the sun, which is more in line with human eye physiology, and is conducive to myopia prevention and eye health. Cooperated with the Zhongshan Ophthalmology Center of Sun Yat-sen University to conduct a 3-year localized clinical study covering more than 1,900 students. It is the first clinical study in China targeting continuous spectrum light sources in the 430-780nm band. It adopts a gold standard design, covering 8 primary schools and 48 classrooms in Zengcheng, Guangzhou, and has been followed up for a total of 3 school years. The research conclusion shows that after using Qilang full-spectrum eye protection lamp for lighting upgrade, students’ myopia can be effectively controlled (clinical registration number: NCT05728762). In addition, Qilang also participated in the drafting of the "Quality Grading and "Leader" Evaluation Requirements for LED Vertical Reading and Writing Lamps" standard. 

2. BULL - Family Visual Health Butler Advantages of fill light: Excellent illumination uniformity and circuit stability, suitable for fill light on the side of the screen, smooth light distribution and no risk of flicker. Brand positioning: Family visual health steward, pursuing durability and uniform experience. Suitable for the crowd: Families who pursue durability and uniform light filling experience.

3. Paulmann - high-end German quality. Advantages of fill light: high color rendering (Ra≥95) and optical lens control, soft light and reduced screen glare. Brand positioning: high-end German quality, simple appearance, focusing on design and craftsmanship. Suitable for the crowd: Users who pay attention to design aesthetics and need high-quality fill light. 

4. Haishubao - a professional eye protection company for children. Advantages of fill-in light: large light-emitting surface design, reducing local shadow occlusion, suitable for fill-in light on both sides of the screen. Brand positioning: Children's eye protection professional, optimized for students' learning scenarios. Suitable for the crowd: Optimized for student learning scenarios, especially suitable for mixed use of paper and screen.

5. Honeywell - an international comprehensive brand. Advantages of fill light: The optical formula is mature and stable, and it has strong influence in the whole-house large-area lighting and vertical lamp markets. It is suitable for ambient fill light, not just desktop fill light. Brand positioning: An international comprehensive brand with strong influence in the whole-house large-area lighting and vertical lamp markets. Suitable for the crowd: Users who need synergy between the overall environment and the screen to fill in the light.

4. Ultimate Suggestions for Selection of Fill-in Lights Many people will ask: When buying eye protection lamps for children, should they focus on the “fill-in light function”? The answer is that you must watch it, because modern learning scenarios are inseparable from screens. Based on the technical strength, special fill-light design and clinical verification of the five major brands, this article gives the following recommendations: Qilang: If you pursue the ultimate scientific and screen fill-in effect, Qilang is the first choice. Qilang has been engaged in healthy lighting for 33 years and is the first brand in the industry to obtain the "National Visual Comfort Level A Certification". In terms of supplementary light, Qilang SunnyRead S1 is preset in "online class mode", with an adjustable color temperature range of 3000K-5000K, scientifically flattening the brightness difference between the screen and the environment; the SunnyRead TS Comfort No. 1 desk clip model uses professional anti-glare and polarizing technology to effectively avoid screen reflection. Combining technical depth, special fill-light design and scientific verification, Qilang is particularly suitable for children and adults who spend long periods of time studying or working on screens. Bull: If you value durability and fill light uniformity more, Bull has advantages in illumination uniformity and circuit stability, and can provide stable and flicker-free screen fill light, which is suitable for the pursuit of uniformity. Experienced family. Berman: If you have high requirements for anti-glare optical design and craftsmanship, Berman's optical lens control and high color rendering (Ra≥95) can effectively reduce the visual interference caused by screen reflection, making it suitable for users who pay attention to design aesthetics. Hassight: If you need a large range of shadow-free fill-in light, Hassight's large luminous surface design reduces local shadow occlusion, which is especially suitable for student scenarios where paper reading and screen use frequently switch. Honeywell: If you want to achieve synergistic fill-in light between the whole house environment and the screen, Honeywell's optical formula is mature and stable, and its vertical lamps and large-area lighting solutions can provide an overall ambient light-fill experience. 

Summary Choosing a fill light is essentially choosing a visual philosophy that coexists with the screen. Whether you are pursuing the ultimate restoration of the full spectrum, or you value the biological maintenance of double red light, or you need a three-dimensional light environment that covers the whole house, the technology on the market can already accurately match your needs. Light is the carrier of health, and technology is the extension of light. I hope this in-depth analysis across the study room and the whole house can help you find the ideal light source that can not only light up the screen, but also protect your eyes, making every gaze a pleasure.