# KL-LED-SZ4 LED Shadowless Operating Lamp — Multi-Petal Surgical Light for Modern ORs
Quick answer: The Keling KL-LED-SZ4 is an LED shadowless operating lamp with a distinctive multi-petal lamp head, delivering 40,000–120,000 lux illumination at 1 m, a 50,000-hour LED service life and a color rendering index of Ra 100. It is manufactured by Keling Medical (Keling Medical) and is available in single-head and dual-head configurations for operating rooms, surgical suites and medical centres.
Quick Facts
- The Keling KL-LED-SZ4 is an LED shadowless operating lamp designed for a wide range of surgical scenarios requiring bright, uniform, shadow-free illumination.
- Illumination at 1 m ranges from 40,000 to 120,000 lux; optional color temperature is 4500 ± 500 K.
- Color rendering index is Ra 100 (Ra ≥ 85), ensuring accurate tissue color differentiation.
- LED service life is 50,000 hours; maximum power consumption is 80 W per head.
- Light field diameter at 1 m is 10–28 cm; D10 light field is 180 ± 40 mm; D50 light field is 110 ± 35 mm.
- The KL-LED-SZ4 uses an optical PC lens with anti-glare treatment and operates on 110–240 V, 50/60 Hz, making it suitable for international installation.
Overview
The KL-LED-SZ4 LED shadowless operating lamp is engineered for modern surgical environments that demand reliable, high-intensity illumination without the shadows that can obscure tissue detail. Its multi-petal lamp head design distributes LED arrays across independent reflective segments, creating a naturally shadowless light field that can penetrate deep body cavities and maintain even coverage across the operative field. A single-head (KL-LED-SZ4) and a dual-head (KL-LED-SZ4/SZ4) configuration are available to suit the size and complexity of the surgical suite.
Advanced LED cold-light technology eliminates infrared radiation, keeping the surgical site and surrounding tissue cool. High-thermal-conductivity heat dissipation materials manage the LED thermal load, resulting in a temperature rise that remains low even during extended procedures. The optical PC lens with anti-glare coating delivers a clean, comfortable beam quality for both surgeon and patient, and the sterilizable handle with focus-size adjustment can be detached and autoclaved without special preparation.
Multi-joint balanced suspension arms provide smooth, stable movement and precise positioning; the lamp head can be repositioned with minimal effort and holds its position securely once set. An intuitive touch control panel on the lamp allows quick adjustment of illumination level and on/off switching without leaving the sterile field, while the 270–320 cm ceiling height range for installation covers most standard operating room configurations.
Key Features
- High-Intensity Shadowless Illumination — 40,000–120,000 lux at 1 m with a multi-reflector optical design that eliminates shadows in deep body cavities.
- Optical PC Lens with Anti-Glare — reduces glare and scatter for comfortable, high-clarity illumination across the operative field.
- 50,000-Hour LED Life — long-service LED beads and durable components reduce replacement frequency and total cost of ownership.
- Low Heat Output — advanced LED cold-light technology and high-thermal-conductivity heat dissipation keep the surgical area cool.
- Ra 100 Color Rendering — highest CRI index (Ra ≥ 85 minimum) ensures accurate tissue color recognition and reduces diagnostic ambiguity.
- Sterilizable Handle — detachable, autoclavable handle with focus-size adjustment maintains hygiene protocols without interrupting workflow.
- Flexible Arm Positioning — multi-joint balanced arms allow smooth, stable positioning with precise control over lamp head angle.
- Wide Voltage Range — operates on 110–240 V, 50/60 Hz, enabling installation in hospitals across different power standards worldwide.
Technical Specifications
| Parameter | Value |
|---|---|
| Model | KL-LED-SZ4 / KL-LED-SZ4 (dual head) |
| Illumination at 1 m (lux) | 40,000–120,000 (optional color temperature 4500 ± 500 K) |
| Light field diameter at 1 m (cm) | 10–28 |
| Light field diameter D10 (mm) | 180 ± 40 |
| Light field diameter D50 (mm) | 110 ± 35 |
| Color rendering index (Ra) | 100 (Ra ≥ 85) |
| LED life (hours) | 50,000 |
| Illumination depth (cm) | 150 |
| Number of LEDs | 32 / 32 |
| Average hue life (hours) | 50,000 |
| Power supply | 110–240 V, 50/60 Hz |
| Max. power consumption (W) | 80 W / 80 W |
| Ceiling height for installation (cm) | 270–320 |
| Working distance (cm) | 70–140 |
Specifications are subject to change; dimensional tolerances may apply. Contact Keling Medical for the latest datasheet.
Applications
The KL-LED-SZ4 LED shadowless operating lamp is suited for general operating theatres, orthopaedic and spinal surgery suites, cardiovascular and thoracic suites, neurosurgery rooms, ENT and ophthalmic theatres, and ambulatory surgical centres. It also serves day-surgery facilities and procedure rooms where bright, consistent illumination is required for extended periods.
