KL-LED-STZ5 Five-Petal LED Operating Lamp

The Keling KL-LED-STZ5 is a ceiling-mounted five-petal-dome LED shadowless operating lamp with 45 LEDs per dome delivering 160,000 lux at 1 m, manufactured by Keling Medical (Jiangsu Keling Medical Appliances Co., Ltd.) for hospitals, clinics, and medical distributors. The KL-LED-STZ5 uses computer-programmed optical arrangement for a high shadowless rate and achieves a rated LED lifespan of 50,000 hours.

Illuminance at 1 m: 160,000 lux
Colour temperature: 3,000–6,700 K
Colour rendering: Ra ≥ 85
Mounting: Ceiling

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Overview

The KL-LED-STZ5 is a ceiling-suspended, five-petal-dome LED shadowless operating lamp designed for high-demand surgical environments requiring superior shadowless performance and natural tissue color rendering. Manufactured by Keling Medical (Jiangsu Keling Medical Appliances Co., Ltd.), the KL-LED-STZ5 is available as a single-dome unit (KL-LED·STZ5) and as a double-dome ceiling configuration (KL-LED·STZ5/STZ5), both delivering 160,000 lux at 1 m. The five-petal (five-lobe) dome head houses 45 LEDs per dome whose positions are determined by a computer-programmed optical arrangement, producing light beams that are described as pure white and natural, penetrating tissues and revealing anatomical structures with minimal shadow.

The KL-LED-STZ5 light field diameter is adjustable between 10 cm and 28 cm at 1 m, and the combined L1+L2 depth of illumination reaches 150 cm, ensuring even the deepest surgical cavities receive uniform, shadow-free light. Keling Medical's high-thermal-conductivity heat dissipation technology limits the heat-to-light ratio to ≤3.2 mW/m²lx, protecting the operative field from excess radiant heat and extending LED service life to 50,000 hours. An optical PC lens with anti-glare treatment completes the optical system, preventing reflective glare from instruments and body fluids.

The KL-LED-STZ5 control panel provides adjustable color temperature across 3,000–6,700 K, allowing clinical teams to select the most appropriate OR light spectrum for each procedure type and to reduce whiteness-induced visual fatigue during long operations. An independently controlled minimally invasive (Endo) illumination circuit reduces output to 10,000 lux for laparoscopic and similar procedures. The KL-LED-STZ5 is designed for ceiling installation heights of 270–320 cm with a working distance of 70–140 cm, accommodating all standard OR configurations.

Quick facts

The Keling KL-LED-STZ5 delivers 160,000 lux illumination at 1 m in both single-dome and double-dome configurations (KL-LED·STZ5/STZ5: 160,000/160,000 lux).
Each dome of the KL-LED-STZ5 contains 45 LEDs arranged using a computer-programmed optical layout for a high shadowless rate and natural, uniform illumination.
The KL-LED-STZ5 includes an independently controlled minimally invasive illumination mode producing 10,000 lux at 1 m, compatible with all kinds of minimally invasive surgery.
The KL-LED-STZ5 color rendering index is Ra≥85 (up to Ra=100), supporting accurate tissue and anatomical structure visualization during surgery.
Keling Medical (Jiangsu Keling Medical Appliances Co., Ltd.) manufactures the KL-LED-STZ5 at an ISO 13485-certified facility with CE-marked product lines and a combined depth of illumination (L1+L2) of 150 cm.
The KL-LED-STZ5 supports adjustable color temperature from 3,000 K to 6,700 K to reduce visual fatigue and help distinguish different tissue types under OR lighting.

Key features

Five-Petal (Five-Lobe) Dome DesignThe five-lobed shadowless head geometry positions LEDs to project light onto the surgical field from multiple angles, substantially eliminating surgeon and instrument shadows and providing rich, uniform illumination depth.
45 LEDs per Dome — Computer-Programmed Optical ArrangementKeling Medical uses computer-programmed optical layout to position all 45 LED sources within the KL-LED-STZ5 dome for maximum shadowless rate; the resulting beam is pure white and natural, revealing tissues and anatomical structures clearly.
160,000 Lux at 1 mThe KL-LED-STZ5 achieves 160,000 lux in both single and double-dome configurations, with an adjustable light field diameter of 10–28 cm at 1 m and a depth of illumination (L1+L2) of 150 cm.
Independently Controlled Minimally Invasive (Endo) ModeA dedicated illumination circuit reduces the KL-LED-STZ5 output to 10,000 lux at 1 m for endoscopic and laparoscopic procedures, suitable for all kinds of minimally invasive surgery without affecting the main dome's ambient output settings.
Adjustable Color Temperature (3,000 K–6,700 K)The KL-LED-STZ5 allows surgeons and OR staff to choose the most appropriate color spectrum for each procedure: cooler temperatures enhance tissue contrast; warmer temperatures reduce white-induced visual fatigue during long operations.
High Thermal Conductivity Heat Dissipation — Low Temperature RiseKeling Medical's heat management technology maintains the KL-LED-STZ5 heat-to-light ratio at ≤3.2 mW/m²lx, keeping the surgical field cool and protecting the 45-LED array to achieve a 50,000-hour rated lifespan.
Optical PC Lens — Anti-GlarePrecision polycarbonate optics shape and diffuse the beam, eliminating specular reflections from surgical instruments, implants, and body fluids to protect the surgical team's vision.
True Color Reproduction (Ra≥85 to Ra=100)The KL-LED-STZ5 high color rendering index enables reliable distinction between tissue types, supporting accurate diagnosis and tissue handling throughout the procedure.
Rich and Uniform Depth IlluminationThe KL-LED-STZ5's shadowless and depth illumination design ensures consistent light intensity throughout the surgical cavity, from superficial incision to deep anatomical planes.
Single and Double-Dome ConfigurationsAvailable as KL-LED·STZ5 (one dome) or KL-LED·STZ5/STZ5 (two domes on a single ceiling suspension arm) for scalable coverage in any operating theatre.

Technical specifications

Specifications are subject to change; dimensional tolerances may apply. Contact Keling Medical for the latest datasheet.

KL-LED-STZ5 technical specifications
Model	KL-LED·STZ5 / KL-LED·STZ5/STZ5
Illumination at 1 m (lux)	160,000 / 160,000
Illumination at 1 m — Endo Mode (lux)	10,000
Light Field Diameter at 1 m (cm)	10–28
Light Field Diameter D10 (mm)	180 ± 40 / 180 ± 40
Light Field Diameter D50 (mm)	110 ± 35 / 110 ± 35
L1+L2 Depth of Illumination (cm)	150
Color Rendering Index (Ra)	100 ≥ Ra ≥ 85
Optional Color Temperature (K)	6,700 ≥ Tc ≥ 3,000
Number of LEDs per Dome	45
Average LED Lifespan (hours)	50,000
Heat-to-Light Ratio (mW/m²lx)	≤3.2
Input Power (VA)	90 W / 90 W
Ceiling Height for Installation (cm)	270–320
Working Distance (cm)	70–140

Applications

The KL-LED-STZ5 ceiling-mounted LED surgical light is suited to operating theatres requiring a high shadowless rate, deep cavity illumination, and adjustable color rendering across a full range of surgical specialties. The five-petal dome design and computer-programmed optics make the KL-LED-STZ5 particularly effective for complex open procedures and hybrid OR environments.

Typical installation settings include:

General and abdominal surgery operating rooms
Laparoscopic, endoscopic, and robotic-assisted surgery suites
Orthopedic, spinal, and trauma operating theatres
Cardiovascular and thoracic surgery rooms
Neurosurgery operating rooms requiring deep-cavity illumination
Obstetrics and gynecology theatres
ENT and maxillofacial surgery suites
Day surgery centres and specialist ambulatory surgical facilities
District and regional hospitals seeking a high-specification ceiling-mounted LED surgical light

Detail sheets

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Frequently asked questions

What is the KL-LED-STZ5 used for?

The Keling KL-LED-STZ5 is a ceiling-mounted five-petal-dome LED shadowless operating lamp used to illuminate the surgical field during open and minimally invasive procedures. With 45 LEDs per dome and 160,000 lux at 1 m, the KL-LED-STZ5 is suitable for general surgery, laparoscopy, orthopedics, cardiovascular surgery, and neurosurgery in hospitals and specialty surgical centres.

How many LEDs does the KL-LED-STZ5 have, and how are they arranged?

Each dome of the KL-LED-STZ5 contains 45 LEDs. Keling Medical uses a computer-programmed optical arrangement to determine the precise position of each LED within the five-petal dome, maximizing the shadowless rate and producing a pure white, natural light beam that reveals tissues and anatomical structures clearly.

Does the KL-LED-STZ5 support minimally invasive and laparoscopic surgery?

Yes. The KL-LED-STZ5 includes an independently controlled minimally invasive illumination circuit that reduces output to 10,000 lux at 1 m. This mode is compatible with all kinds of minimally invasive surgery, preventing camera sensor overexposure during laparoscopic, endoscopic, and robotic-assisted procedures while the main dome continues to illuminate the OR environment.

Can hospitals and distributors purchase the KL-LED-STZ5 on an OEM or wholesale basis?

Yes. Keling Medical (Jiangsu Keling Medical Appliances Co., Ltd.) supplies the KL-LED-STZ5 and the full Keling surgical light range to hospitals, medical equipment distributors, and OEM partners globally. CE-marked configurations are available. Wholesale and OEM inquiries can be directed to Keling Medical at our export team.