Fluorescence Microscope Illuminators

Fluorescence Illumination Solutions

X-Cite® is a product family of fluorescence illumination systems and measurement solutions designed especially for fluorescence microscopy. Whether you are observing fixed or live cells, X-Cite® offers a complete range of lamp and LED microscope light sources that optimize imaging and ensure greater data reliability. The X-Cite® products are known for maximum stability and superior illumination uniformity for fluorescence microscopy applications, with lamp-based solutions that provide the convenience of pre-aligned, long-life lamps and easy installation. Delivering high intensity LED illumination, the X-Cite® XLED1 and X-Cite® 120LED feature intuitive controls and no bulbs to install, making set-up and operation simpler than ever.

Fluorescence Microscope Light Sources

X-Cite® offers a wide range of lamp and LED light sources and fluorescence illumination systems ideal for a variety of microscopy applications. From our standard X-Cite® 120Q model used for routine assays, to our most advanced high-end X-Cite® XLED1,X-Cite® has the right fluorescence illumination system for your application.

How does one choose a microscope light source?

Selecting a fluorescence microscope light source depends on the application. How fast are you acquiring images? How much intensity control do you need for your light source? How fast do you need to shutter the light? Find out which system is most suitable for your application – CONTACT US today!

X-Cite® offers a wide selection of illumination systems to meet your application needs ranging from the X-Cite® 120Q best used for routine fluorescence imaging and the X-Cite® 120PC for shuttered illumination through several software applications; the X-Cite® 200DC is suitable for short-exposure imaging and the X-Cite® exacte for long-term stability and time-lapse studies. Our LED suite features the X-Cite® XLED1 with intelligent triggering and pulsing capabilities to extend live-cell imaging and the X-Cite® 120LED as a green alternative to the X-Cite® 120Q.

Power Measurement in Fluorescence Imaging

The X-Cite® Power Measurement System measures optical power where it matters most — at the objective plane. With consistent illumination levels, reproducible imaging results can be ensured while increasing the integrity of your research. Whether you use a lamp, LED or laser, the X-Cite® power meter can measure light intensity from a light guide or at the end of a specific objective.

In the case of lasers, they are notorious for drifting and a nanometer drift in optics can result in a major decrease in the power of the light reaching your sample. To see an example of how the X-Cite® Power Meter can work to help maintain your fluorescence microscopy system and reduce equipment down-time, see the following case study.

Lumen Dynamics’ Flourescence Illumination Products

X-Cite® 120LED

One of our most recently developed products, the X-Cite® 120LED, takes fluorescence illumination to a whole new level. This is LED illumination without compromise. This LED microscope illuminator provides exceptional optical power and superior specimen level field uniformity. The X-Cite® 120LED offers PC, TTL and manual control to provide the broadest fluorescence illumination spectrum. With LEDs guaranteed to last at least 25,000 hours and no modules or lamps needing regular replacement, this is the ideal LED microscope illuminator for the busy lab. With convenience derived from simplicity of design, the X-Cite® 120LED will allow researchers the freedom to focus on their work rather than maintaining their equipment.

X-Cite® 120Q

The X-Cite® 120Q delivers rich spectral excitation energy using its 120-watt lamp. This microscope illuminator hits the sample plain with uniform wide-field fluorescence microscope illumination. The bulb with our patented Intelli-Lamp®, provides more than 2000 hours of life, is easy to change through a simple, single-step process. The user can also customize the level of illumination with the optional adjustable iris. The X-Cite® 120Q microscope illuminator is ideally suited for fluorescence microscopes being used in routine assays and for use as an excitation light source in multi-user facilities.

X-Cite® 120PC Q

The X-Cite® 120PC Q provides all the benefits of the X-Cite® 120Q fluorescence illumination system, plus the benefits of a computer controlled microscope light source. This microscope illuminator has the same rich spectral sample excitation as the X-Cite® 120Q, with its pre-aligned lamps, 2000 hour lamp lifetime, uniformly illuminated view, and adjustable iris. The RS-232 communication and command set is a straightforward means of integrating this microscope illuminator into both automated systems and commercially available imaging software systems.

X-Cite® 200DC

The X-Cite® 200DC is a fluorescence microscope illuminator system that combines optical performance, a built-in shutter, and short term stability to create the ultimate in flourescence illumination. The X-Cite® 200DC maintains the high standards for quality and durability that characterize all X-Cite® systems. Convenient to use, with asuperior illumination uniformity, this is as intuitive and easy-to-use a flourescence illumination system as you will find on the market. Its light guide auto-detection ensures optimized light coupling every time you use it. The X-Cite® 200DC is ideal for both experienced and novice microscopists. The smooth 0-100 percent intensity adjustment, coupled with its expanded spectral range, give this advanced DC stabilized fluorescence illumination source the flexibility to meet a variety of project needs.

X-Cite® exacte

The X-Cite® exacte is an ultra-stable fluorescence microscope light source. It provides unparalleled short and long-term intensity stability due to its DC-powered mercury lamp and Lumen Dynamics’ proprietary Closed-Loop Feedback technology. These qualities ensure that this flourescence illumination system can reliably perform imaging protocols lasting anywhere from milliseconds to days. When combined with the X-Cite® Optical Power Measurement System, it can calibrate light output in absolute power units (watts). This reliability will ensure a truly repeatable fluorescence illumination for exact consistency in your imaging experiments.

Lumen Dynamics

Lumen Dynamics is a leader in light-based technologies for advanced manufacturing and life science applications. Our company has been in a constant state of evolution since its foundation in 1984. Beginning with advanced dental curing processes, Lumen Dynamics expanded over the years to include the manufacturing of medical devices and fibre optic telecom components, developing photo-reactive adhesives, cellular imaging, and light-delivered digital printing. Wherever our business has expanded, we have become a leader in the field.

Our dynamic approach to business, built on our core mission and values, has made us the successful company we are today. We hold ourselves to the highest standards of respect and integrity when it comes to both our business and our personal ethics. We maintain a culture in our workplace of responsibility and accountability.

We strive to meet our customers’ needs, and work to establish high-value relationships with our strategic partners. We believe that part of creating valuable relationships with our customers is building a strong work team in our own company. By creating a work environment that is both positive and challenging, we help our employees develop their full potential and thereby best serve our clients. .

At Lumen Dynamics, we continue to maintain our entrepreneurial spirit, always encouraging and nurturing the development of new ideas. We set ambitious goals and aim for direct results for our customers. We act with passion and energy, bringing a sense of urgency to our efforts to stay ahead of market developments.

Ultimately, we understand that no one aspect of our business is an island. Our employees, our management, our corporate culture, our operational practices, and our constant quest for innovation must all work together to meet our customers’ needs. That’s why we employ a Total Quality approach to our corporate organization.

» Additional Information



X-Cite® 120Q

The X-Cite® 120Q excitation light source uses a 120-watt lamp to deliver rich spectral excitation energy and uniform wide-field fluorescence microscope illumination to the sample plane.

Learn more

X-Cite® 120PC Q

The X-Cite® 120PC Q offers the same performance and convenience as the X-Cite® 120Q fluorescence illumination system with added PC control.

Learn more

X-Cite® 200DC

The X-Cite® 200DC fluorescence microscopy illumination system offers the ultimate combination of optical performance, short term stability and a built-in fast shutter.

Learn more

X-Cite® exacte

The X-Cite® exacte ultra stable fluorescence light source employs a DC-powered mercury lamp coupled with proprietary Closed-Loop Feedback technology to provide unmatched short and long-term intensity stability, for imaging protocols lasting from milliseconds to days.

Learn more

X-Cite® XLED1

The X-Cite® XLED1 is a high power LED microscope light source with unmatched LED switching speeds, designed to optimize fluorophore excitation

Learn more

X-Cite® 120LED

The new X-Cite® 120LED brings a whole new perspective to LED illumination without compromise.

Learn more

Options and Accessories


X-Cite® Optical Power Measurement System

Measures optical power in watts at the specimen level enabling consistent and repeatable illumination for accurate results.

Learn more

X-Cite® 120 Replacement Lamp

The powerful 120W lamp used in the X-Cite® 120Q Series provides excitation intensity comparable to, or better than, conventional mercury arc lamps.

Learn more

X-Cite® exacte and 200DC Replacement Lamp

The DC-powered mercury lamp used in the X‑Cite® exacte and X-Cite® 200DC provides exceptional short and medium term intensity stability.

Learn more

X-Cite® Light Guides

The X-Cite® light sources connect to your microscope via a liquid light guide and a coupling adaptor.

Learn more

X-Cite® Microscope Adaptors

X-Cite® light sources connect to a microscope via a wide selection of coupling adaptors for optimized illumination intensity and uniformity.

Learn more