HEINE ML4 LED

High-performance medical LED headlight for surgery, examinations and demanding procedures

The HEINE ML4 LED HeadLight is HEINE’s powerful professional headlight for medical users who require maximum illumination, precise control of the light field and high wearing comfort during prolonged procedures.

HEINE specifically designed the ML4 LED for healthcare professionals who need reliable visibility during long surgical procedures and treatments. With HEINE LED HQ, a typical illumination intensity of 90,000 lux, a colour temperature of approximately 5,500 K and an adjustable spot size, the ML4 LED is positioned above the lighter MicroLight2 in terms of illumination performance.

A major advantage is its modular concept: the ML4 LED can be used as a professional medical headlight without magnification or expanded with HEINE HR and HRP binocular loupes.

HEINE LED HQ

Powerful, homogeneous illumination with natural colour rendering

The ML4 LED uses HEINE LED HQ technology with a typical illumination intensity of 90,000 lux at 180 mm.

Its typical colour temperature of 5,500 K provides a bright, neutral-white illumination, while the colour rendering index is typically CRI 92 and at least CRI 90.

For medical applications, this combination is particularly valuable because high brightness alone is not sufficient. The illuminated area must also remain homogeneous and allow structures and colours to be differentiated reliably.

90,000 Lux

HEINE's powerful solution for demanding medical applications

With a typical 90,000 lux, the ML4 LED provides considerably more illumination than the compact MicroLight2 with its typical 55,000 lux.

The ML4 LED is therefore particularly suitable when a powerful light source is required for prolonged examinations, treatments or surgical procedures. HEINE itself positions the model specifically for long procedures.

Technical Data

*Measured at a distance of 180 mm from the light source to the object.

Adjustable Spot Size

From 30 to 80 mm at 420 mm working distance

One of the most important differences between the ML4 LED and simpler medical headlights is its continuously adjustable illumination spot.

At a working distance of 420 mm, the light field can be adjusted from approximately 30 to 80 mm.

A smaller light field concentrates illumination on a precisely defined area, while a larger field provides a broader overview.

This makes the ML4 LED highly adaptable to different examination and treatment situations.

Stepless Brightness Control

Adapt the illumination to the procedure

The illumination intensity can also be continuously adjusted from 0 to 100%.

The brightness control is integrated into the headband system and allows the user to adapt the light intensity to the examination situation. HEINE specifically points out that appropriate brightness adjustment helps prevent unwanted reflections.

The combination of adjustable brightness and adjustable spot size is a major advantage of the ML4 LED:

The practitioner controls not only how much light is required, but also precisely where that light is concentrated.

Coaxial Illumination

Light exactly where you are looking

The compact coaxial design positions the illumination close to the user's visual axis.

This helps minimise shadows and provides excellent illumination of areas that are otherwise difficult to see. HEINE explicitly highlights the shadow-free image produced by the coaxial design.

This is particularly important when working in cavities, narrow areas or deep structures where conventional room or examination lighting can quickly create shadows.

Professional L Headband

Designed for long procedures

The ML4 LED is worn on the HEINE Professional L headband.

Multiple adjustment points allow the headband to be adapted to the individual user. Soft padding provides additional comfort while maintaining a secure fit – an important feature during longer examinations and procedures.

The ML4 LED and compatible binocular loupes can also be adjusted separately, allowing the illumination and optical system to be aligned individually. HEINE notes that the system can be adapted whether the practitioner works with corrective glasses, contact lenses or without glasses.

Two Power Supply Concepts

HEINE mPack or mPack UNPLUGGED

A major advantage of the ML4 LED is the choice between two professional power supply concepts.

ML4 LED with mPack

The HEINE mPack is worn separately from the headlight system.

HEINE specifies a typical operating time of approximately 8.5 hours, making this configuration particularly suitable for prolonged use.

ML4 LED with mPack UNPLUGGED

The mPack UNPLUGGED is integrated directly into the head-worn system.

This eliminates the cable between the headlight and a belt-worn battery pack and provides maximum freedom of movement.

HEINE specifies a typical operating time of approximately 3.5 hours. The complete ML4 LED system weighs approximately 460 g with mPack UNPLUGGED.

The choice is therefore straightforward:

mPack → longer operating time and less weight on the head

mPack UNPLUGGED → maximum mobility without a cable to the power source

Optional HEINE S-GUARD

Additional protection for professional applications

Depending on the selected configuration, HEINE offers ML4 LED sets with or without S-GUARD. Current HEINE configurations include both mPack and mPack UNPLUGGED versions with optional S-GUARD.

This allows the system to be configured according to the individual requirements of the medical application.

Optional Polarisation Filter P2

Reduce reflections and improve contrast

The HEINE Polarisation Filter P2 is available as an accessory for the ML4 LED.

The polarisation filter can reduce distracting reflections and improve contrast in suitable examination situations. HEINE also offers corresponding polarisation filters for HR binocular loupes, allowing the illumination and loupe optics to be coordinated.

Optional Yellow Filter

Particularly useful for dental applications

A detachable yellow filter is also available for the ML4 LED.

The filter reduces the blue component of the illumination and is therefore particularly interesting for dental applications involving light-curing composite materials.

ML4 LED without Magnification

A professional medical headlight in its own right

An important point for our shop structure is that the HEINE ML4 LED is not dependent on binocular loupes.

HEINE lists the ML4 LED as a standalone product in its Headlights category and separately offers the ML4 LED HeadLight with HR / HRP Optics under its combined loupes-and-lights systems.

Therefore, the standalone ML4 LED belongs clearly in:

Medical Headlights → HEINE ML4 LED

The combinations with binocular loupes belong separately under:

Loupes with Headlight Kits → ML4 LED + HR / HRP

This separation is useful both for customers and for SEO.

ML4 LED with HEINE HR 2.5x

Professional illumination combined with versatile magnification

The ML4 LED can be expanded with HEINE HR 2.5x High Resolution binocular loupes.

Available working distances include:

• HR 2.5x / 340 mm
• HR 2.5x / 420 mm
• HR 2.5x / 520 mm

This combination brings together the versatile 2.5x magnification of the HR optics with the high illumination performance of the ML4 LED.

ML4 LED with HEINE HRP

High magnification for demanding precision work

The ML4 LED can also be combined with HEINE HRP High Resolution Prismatic binocular loupes.

HEINE lists the following configurations:

This allows the ML4 LED platform to cover applications ranging from versatile 2.5x magnification to highly detailed 6x magnification.

HEINE ML4 LED or MicroLight2?

Maximum performance or minimum weight?

Both are professional HEINE medical headlights, but they serve different priorities.

The positioning is therefore clear:

MicroLight2 → ultralight medical headlight for flexible examinations

ML4 LED → high-performance medical headlight for demanding and prolonged procedures

HEINE ML4 LED or LoupeLight2?

Maximum illumination performance or compact loupe-light system?

The difference becomes particularly important when binocular loupes are required.

The LoupeLight2 focuses on a compact and lightweight combination of binocular magnification and illumination.

The ML4 LED + HR/HRP focuses on higher illumination performance, an adjustable light field and a professional headband. HEINE describes the ML4 LED combination specifically as designed to provide a secure, comfortable fit even during long procedures.

For our product hierarchy:

LoupeLight2 → compact premium loupe-light system

ML4 LED + HR/HRP → high-performance premium system for demanding procedures

Applications of the HEINE ML4 LED

Designed for demanding medical procedures

HEINE describes the ML4 LED as a top-selling headlight across surgical specialties and specifically highlights its suitability for long operations and treatments.

The combination of 90,000 lux, adjustable spot size, brightness control, coaxial illumination and a professional headband makes it particularly suitable wherever powerful, targeted and hands-free illumination is required.

Depending on the application, it can be used either independently or together with HEINE HR/HRP binocular loupes.

Frequently Asked Questions about HEINE ML4 LED

How bright is the HEINE ML4 LED?

The typical illumination intensity is 90,000 lux at a distance of 180 mm.

What is the colour temperature?

The typical colour temperature is approximately 5,500 K.

Can the light field be adjusted?

Yes. At a working distance of 420 mm, the light field can be continuously adjusted between approximately 30 and 80 mm.

Can the brightness be adjusted?

Yes. The ML4 LED provides continuous brightness control. The adjustment is made via the headband rheostat.

Can the ML4 LED be used without binocular loupes?

Yes. The ML4 LED is a standalone professional medical headlight. HEINE also offers separate configurations combined with HR and HRP binocular loupes.

Which binocular loupes can be combined with the ML4 LED?

The system can be combined with HEINE HR 2.5x and HEINE HRP 3.5x, 4x and 6x optics in the corresponding working distances.

What is the difference between mPack and mPack UNPLUGGED?

The mPack is worn separately and offers a typical operating time of approximately 8.5 hours. The mPack UNPLUGGED is integrated into the head-worn system and eliminates the cable to a belt-mounted power source, with a typical operating time of approximately 3.5 hours.

Are filters available?

Yes. HEINE offers an optional Polarisation Filter P2 and a detachable yellow filter for the ML4 LED.

Buy HEINE ML4 LED HeadLight at V-MEDTECH

The HEINE ML4 LED HeadLight is the premium choice for medical professionals who require powerful, precisely controllable and reliable illumination during demanding procedures.

With HEINE LED HQ, typ. 90,000 lux, 5,500 K, an adjustable 30–80 mm spot size, continuous brightness control, Professional L headband and a choice of mPack or mPack UNPLUGGED, the ML4 LED offers significantly more flexibility and illumination performance than a simple medical headlight.

It can be used independently as a professional headlight or expanded with HEINE HR and HRP binocular loupes for demanding precision work.