Table lamp LED Module

Our desk lamps (especially eye-protection lamps) are designed with visual comfort and eye health in mind, with specific requirements for color rendering index (CRI), luminous efficacy, color temperature, and LED specifications:

I. Core Optical Parameter Requirements

1. Color Rendering Index (CRI, Ra & R9)

Eye-protection lamps have much higher color rendering requirements than ordinary lighting, needing to accurately reproduce the colors of books and paper to avoid eye strain:

Basic Requirements: General CRI Ra ≥ 80, meeting daily reading and writing needs;

Eye-protection Level Requirements: Ra ≥ 90 (high color rendering standard), and a special color rendering index R9 ≥ 50 (red light reproduction capability). The higher the R9 value, the more realistic the reproduction of warm colors such as red and orange, reducing the burden on the eyes when recognizing colors, making it especially suitable for children's learning and long-term reading scenarios;

High-end full-spectrum eye-protection lamps: Ra ≥ 95, spectrum covering the 380~780nm natural light wavelength band, with a CRI of ≥ 90 across the entire R1-R15 frequency band, approaching the color rendering effect of natural light.

2. Luminous Efficacy (lm/W) Luminous efficacy determines the energy efficiency of an eye-protection lamp, requiring a balance between brightness and power consumption: Standard eye-protection desk lamps (5~15W): System luminous efficacy ≥ 80lm/W (including driver losses); High-power eye-protection desk lamps (15~25W, large light-emitting surface design): System luminous efficacy ≥ 90lm/W;

Note: Higher luminous efficacy is not always better. It needs to be matched with illuminance uniformity (national standard requirements: illuminance in reading/writing areas ≥ 500lx, uniformity ≤ 3), avoiding areas that are too bright or too dark.

3. Color Temperature (CCT) Color temperature directly affects eye comfort and is a core indicator of eye-protection lamps:

Recommended range: 3000K~4000K (warm white light to neutral white light). This light range offers soft, non-glaring light that reduces pupil contraction frequency, making it suitable for extended reading and writing sessions.

3000K~3500K: Warm white light with a strong ambiance, suitable for bedtime reading and children's rooms.

3500K~4000K: Neutral white light, bright yet soft, suitable for daily study and office work.

Prohibited Range: Avoid using cool white light above 5000K, as it has a relatively high blue light content, which can easily cause eye fatigue with prolonged exposure.

Advanced Features: Supports stepless color temperature adjustment (2700K~5000K) to adapt to different scenarios and individual eye habits.

4. Other Key Eye Protection Parameters

Flicker: Our design meets the requirement of zero visible flicker, with a fluctuation depth ≤3.2% (IEC standard). We prioritize eye-protection lamps driven by constant current to avoid stimulation of the retina from low-frequency or high-frequency flicker.

Blue Light Hazard: Our solution meets RG0 level (no blue light hazard), a mandatory requirement of national standards for reading and writing lamps, preventing blue light damage to retinal cells.

Glare Ratio (UGR): UGR ≤ 19, reducing direct glare through diffuse reflection design (such as soft light diffuser plates and microprism structures).

II. LED Chip Selection

The LED chips used in desk lamps/eye-protection lamps are mainly low-power SMD surface-mount LED chips, with some high-end products using COB integrated LED chips. The core selection criteria are as follows:

1. Mainstream SMD Surface-Mount LED Chips

2835 SMD LED Chip (Most Commonly Used)

Specifications: Single chip power 0.2~0.5W, beam angle 120°, luminous efficacy 140~160lm/W;

Advantages: Small size, suitable for high-density matrix arrangement, good light uniformity, and can achieve particle-free lighting when paired with a diffuser;

Suitable Scenarios: Low to medium power eye-protection desk lamps (5~15W), high cost-performance ratio.

1. 3030 SMD LED Chip

Specifications: Single chip power 0.5~1W, luminous efficacy 130~150lm/W;

Advantages: Better heat dissipation than 2835, suitable for high-power eye-protection desk lamps (15~25W);

Note: Requires an aluminum substrate for heat dissipation to prevent excessive junction temperature and light decay.

2. COB Integrated LED Chip

Specifications: Single chip power 5~20W, luminous surface size Φ10~Φ30mm;

Advantages: Uniform light output, no obvious light spots or graininess, lower glare, suitable for large luminous surface eye-protection desk lamps;

Note: COB LED chips require high optical design; require a dedicated reflector or lens to avoid excessive brightness in the center area.

3. Special LED Chip Selection

Full-spectrum LED Chips: The spectrum is close to natural light, with the blue light peak controlled below 450nm (reducing the harm of short-wave blue light), Ra≥95, R9≥80, making them the first choice for high-end eye-protection lamps;

Anti-blue light LED Chips: Through optimized phosphor formula, the proportion of short-wave blue light in the 400~450nm range is reduced, meeting the RG0 standard.

Our products are supplying for brands such as Honeywell, XIAOMI table lamp.

Our Company Profile

Guoli Optoelectronics has more than 10 years experiences in PCB, PCBA design and manufacturing, especially in LED application, we have strong engineers team for software and hardware development, and with 50+ patents in PCB products. We have 4 manufacturing bases and 600+ staffs, strong production capacity and fast response to make sure your project run efficiently. We have thousands of successful customers and cases globally, and serving the brands in industry worldwide.

We have complete quality control system and management system to keep our product quality, including UL, Rohs, ISO9001, ISO14001 and IATF16949.

Our Advantages

1. Save Time and Costs: GUOLI provides PCB design, sourcing, assembly, testing, and after-sales services, reducing communication and delivery time with different suppliers, improving efficiency, and lowering costs.

2. Reduce Errors: PCB design and assembly defects can cause project delays. GUOLI's one-stop PCBA service reduces various errors, including design, sourcing, and assembly mistakes, thereby improving quality control.

3. Strong Technical Team: GUOLI's one-stop PCBA service is typically equipped with an experienced technical team to help customers solve various technical problems and ensure timely project completion.

4. Unified Warranty and After-Sales Service: GUOLI's one-stop PCBA service provides unified warranty and after-sales service, helping to build long-term partnerships and achieve mutual benefit.

5. Customized Services: GUOLI's one-stop PCBA service can provide more personalized services based on customers' specific needs and requirements, and develop suitable circuit boards and system components.

Application 

Table lights, desk lights, eye-protection lights, reading lights, Indoor lights.,etc.

Our Customers Reference

Our PCB Prodcution Site

Our PCBA Prodcution Site

Packing and Shiping