PlexBright Compact LED Modules

At the heart of the PlexBright® Optogenetic Stimulation System are the cost-effective and powerful PlexBright LED Modules for standard use (Table-top LED Modules), or for use with our PlexBright Commutators for freely behaving animals (Compact or New Head-Mounted LED Modules). A full spectrum of wavelengths enables you to get the most out of your research whether you are performing acute or chronic in vivo experiments or in vitro preparations.

**NEW Near-infrared and Ultraviolet LED Modules.**

Plexon’s second generation, super-intensity PlexBright LED Modules provide outstanding light stability and pulse characteristics – all within a very small footprint. Our ever-expanding series of powerful, fiber-coupled PlexBright LED Modules effectively elicit responses from several opsins targeted in neuroresearch, including channelrhodopsins (ChRs), archaerhodopsins (Arch) and halorhodopsins (NpHR).

PlexBright LED Modules come in a wide range of wavelengths and are capable of emitting continuous, stable, and quick-responding light through the tip of a 200μm core, custom developed optical fiber.  PlexBright Compact LED Modules are available in the following seventeen wavelengths: Royal (450nm), Blue (465nm), Green (525nm), Lime (550nm), Yellow (590nm), Orange (620nm), Red (630nm) Crimson (660nm), Infrared 1 (850nm), Infrared 2 (940nm), Near-Infrared 1 (740nm), Near-Infrared 2 (760nm), Near-Infrared 3 (780nm), Near-Infrared 4 (810nm), Ultraviolet 1 (365nm), Ultraviolet 2 (385nm), and Ultraviolet 3 (405nm).

PlexBright Compact LED Modules provide the same performance as the PlexBright Table-top LED Modules, only in an ultra light-weight and miniaturized package designed to be mounted to either of our PlexBright

Commutators that deliver power to the LEDs as they spin freely along with a behaving animal. These modules have recently been enhanced to feature a magnetic connection to the commutator. The new style of magnetic attachment enables faster module interchangeability. These Compact LED Modules are compatible with the PlexBright Dual LED Commutator, PlexBright Dual LED + 16 Channel Commutator for simultaneous neural recording with analog headstages, or the NEW Carousel™ Commutator for simultaneous neural recording with digital headstages.

For maximum power output to the stimulation site, high performance PlexBright Optical Patch Cables have been designed to easily connect to the modules. It is important to note that our PlexBright Optical Patch Cables are LED module style-specific.

PlexBright Starter Kits offer the initial products to get started and a 10% discount when purchased as a kit. Kits are available in four experimental designs and with either driver (the economical kit with the LD-1 Single Channel LED Driver or the fully functional kit with the PlexBright 4 Channel Optogenetic Controller with Radiant Software).

In addition to super intensity PlexBright LED Modules, Optical Patch Cables and Commutators, the PlexBright Optogenetic Stimulation System also offers the PlexBright LD-1 Single Channel LED Driver; the more sophisticated PlexBright 4 Channel Optogenetic Controller running Radiant Software; specially designed PlexBright Fiber Stub Implants; the PlexBright Light Measurement Kit; and the PlexBright Optical Fiber Cleaning Kit to safely maintain and extend the life of the fiber tips. If your experiments include freely behaving animals, you may also be interested in learning more about the CinePlex® and CineLyzer® Behavioral Research Systems.

Your Plexon Sales Engineer is available to provide additional information and to assist you in determining what configuration might be the best choice for supporting your research.

Table-top and Compact LED modules offer identical power output specifications for a single wavelength/color.

*** Important Power Output Note ** Plexon is committed to ensuring that researchers have the most accurate data available regarding the equipment used for their research. Therefore, we have taken extra care to provide the typical power outputs that are actually experienced at the tip of a 1.0m PlexBright Optical Patch Cable attached to a PlexBright LED Module. Other companies typically present the power output from the module itself, which represents the highest value possible. However, a more realistic number is that of the power output from the tip of an attached optical patch cable of appropriate fiber size, The information below represents the more realistic performance – and is only achievable if using the PlexBright high performance products. Any substitutions will not yield the high powers reported below. If comparing PlexBright products to those of other companies, be certain to verify if the power output reported is directly from the LED module, or the LED module plus 1.0m optical patch cable.

Color (Wavelength)Typical Power Output*
(From the tip of an attached 200/230µm fiber patch cable 1.0m in length)
Max CurrentRemarks
Royal (450nm)28.1mW
(894mW/mm2)
300mA
Blue (465nm)24.9mW
(792mW/mm2)
300mAOne of the most popular LED modules.
Green (525nm)7.8mW
(249mW/mm2)
300mAOne of the most popular LED modules.
Lime (550nm)11.5mW
(336mW/mm2)
500mAIt offers attractive power and a broad activation spectrum to those targeting halorhodopsins and archerhodopsins.
Yellow (590nm)3.2mW
(102mW/mm2)
250mADue to greater power output and spectrum overlap, the Orange (620nm) LED module is often preferred over the Yellow (590nm).
Orange (620nm)11.0mW
(349mW/mm2)
250mA
Red (630nm)11.8mW
(375mW/mm2)
1000mA
Crimson (660nm)15.1mW
(476mW/mm2)
1000mA
Infrared 1 (850nm)13.2mW
(422mW/mm2)
1000mA
Infrared 2 (940nm)14.0mW
(445mW/mm2)
1000mA
Near-Infrared 1 (740nm)8.5mW
(270mW/mm2)
1000mA Near-Infrared LED modules are used for photothermal inhibition of neural activity
Near-Infrared 2 (760nm)11.2mW
(356mW/mm2)
1000mA Near-Infrared LED modules are used for photothermal inhibition of neural activity
Near-Infrared 3 (780nm)7.2mW
(228mW/mm2)
1000mA Near-Infrared LED modules are used for photothermal inhibition of neural activity
Near-Infrared 4 (810nm)8.4mW
(268mW/mm2)
1000mA Near-Infrared LED modules are used for photothermal inhibition of neural activity
Ultraviolet 1 (365nm)13.5mW
(430mW/mm2)
1000mA
Ultraviolet LED modules for Ca indicator and Light-regulated GABAA receptor (LIGABAR)
Ultraviolet 2 (385nm)26.0mW
(829mW/mm2)
1000mA Ultraviolet LED modules for Ca indicator and Light-regulated GABAA receptor (LIGABAR)
Ultraviolet 3 (405nm)27.2mW
(865mW/mm2)
1000mAUltraviolet LED modules for Ca indicator and Light-regulated GABAA receptor (LIGABAR)


Most information provided by other companies will report the highest possible output power – often directly from the LED itself. Plexon is more concerned with ensuring that researchers are clearly aware of practical output. The table below provides the expected system output actually experienced by the tissue – accounting for the specific wavelength chosen, loss due to patch cable and fiber stub connections, and the Fiber Stub Implant optical fiber diameter.

PlexBright LED Power Output at Various Points Throughout the Light Path

                               With High Performance Patch Cables 

LED ModuleAt the
LED Module
At the tip of a 200/230µm, 0.66NA Patch Cable*At the tip of a 200/230µm, 0.66NA Fiber Stub or Magnetic Fiber Stub**At the tip of a     110/125µm, 0.66NA
Fiber Stub***
Color
(Wavelength)
Measured OutputMeasured Output
(Normalized Output)
Measured Output
(Normalized Output)
Measured Output
(Normalized Output)
Royal
(450nm)
44.9mW

28.1mW
(894mW/mm2)
22.5mW
(715mW/mm2)
6.9mW
(724mW/mm2)
Blue
(465nm)
40.2mW
24.9mW
(792mW/mm2)
19.9mW
(634mW/mm2)
6.1mW
(645mW/mm2)
Green
(525nm)
11.8mW

7.8mW
(249mW/mm2)
6.2mW
(199mW/mm2)
1.9mW
(201mW/mm2)
Lime
(550nm)
19.8mW

11.5mW
(336mW/mm2)
9.2mW
(293mW/mm2)
2.8mW
(295mW/mm2)
Yellow
(590nm)
5.8mW

3.2mW
(102mW/mm2)
2.6mW
(82mW/mm2)
0.8mW
(83mW/mm2)
Orange
(620nm)
17.5mW

11.0mW
(349mW/mm2)
8.8mW
(279mW/mm2)
2.7mW
(283mW/mm2)
Red
(630nm)
19.5mW

11.8mW
(375mW/mm2)
9.4mW
(300mW/mm2)
2.9mW
(304mW/mm2)
Crimson
(660nm)
22.8mW

15.1mW
(476mW/mm2)
12.0mW
(381mW/mm2)
3.7mW
(386mW/mm2)
Infrared 1
(850nm)
21.3mW

13.2mW
(422mW/mm2)
10.6mW
(337mW/mm2)
3.2mW
(342mW/mm2)
Infrared 2
(940nm)
21.5mW

14.0mW
(445mW/mm2)
11.2mW
(356mW/mm2)
3.4mW
(360mW/mm2)
Near-Infrared 1
(740nm)
12.3mW
8.5mW
(270mW/mm2)
6.8mW
(216mW/mm2)
2.1mW
(219mW/mm2)
Near-Infrared 2
(760nm)
14.7mW11.2mW
(356mW/mm2)
8.9mW
(285mW/mm2)
2.7mW
(288mW/mm2)
Near-Infrared 3
(780nm)
11.0mW7.2mW
(228mW/mm2)
5.7mW
(182mW/mm2)
1.8mW
(184mW/mm2)
Near-Infrared 4
(810nm)
11.7mW8.4mW
(268mW/mm2)
6.7mW
(215mW/mm2)
2.1mW
(217mW/mm2)
Ultraviolet 1
(365nm)
28.1mW13.5mW
(430mW/mm2)
10.8mW
(344mW/mm2)
3.3mW
(348mW/mm2)
Ultraviolet 2
(385nm)
42.0mW26.0mW
(829mW/mm2)
20.8mW
(663mW/mm2)
6.4mW
(672mW/mm2)
Ultraviolet 3
(405nm)
41.8mW27.2mW
(865mW/mm2)
21.7mW
(692mW/mm2)
6.7mW
(701mW/mm2)

*Measured at the tip of a PlexBright High Performance Optical Patch Cable with a 200/230µm fiber 1.0m long.
**Measured at the tip of a PlexBright 200/230µm fiber diameter Fiber Stub Implant or 225/245µm fiber diameter magnetic fiber stub implant connected to a PlexBright High Performance Optical Patch Cable with a 200/230µm fiber 1.0m long.
***Measured at the tip of a PlexBright 110/125µm fiber diameter Fiber Stub Implant connected to a PlexBright High Performance Optical Patch Cable with a 200/230µm fiber 1.0m long.

PlexBright LED Power Output at Various Points Throughout the Light Path

                               With High Durability Patch Cables 

LED ModuleAt the
LED Module
At the tip of a 200/230µm, 0.5NA Patch Cable*At the tip of a 200/230µm, 0.66NA Fiber Stub or Magnetic Fiber Stub**At the tip of a     110/125µm, 0.66NA
Fiber Stub***
Color
(Wavelength)
Measured OutputMeasured Output
(Normalized Output)
Measured Output
(Normalized Output)
Measured Output
(Normalized Output)
Royal
(450nm)
44.9mW

21.8mW
(694mW/mm2)
17.4mW
(554mW/mm2)
5.4mW
(569mW/mm2)
Blue
(465nm)
40.2mW
19.0mW
(605mW/mm2)
15.2mW
(484mW/mm2)
4.7mW
(495mW/mm2)
Green
(525nm)
11.8mW

5.8mW
(185mW/mm2)
4.6mW
(146mW/mm2)
2.4mW
(253mW/mm2)
Lime
(550nm)
19.8mW

10.1mW
(321mW/mm2)
8.1mW
(258mW/mm2)
2.5mW
(263mW/mm2)
Yellow
(590nm)
5.8mW

3.0mW
(95mW/mm2)
2.4mW
(76mW/mm2)
0.8mW
(84mW/mm2)
Orange
(620nm)
17.5mW

9.2mW
(293mW/mm2)
7.4mW
(236mW/mm2)
2.3mW
(242mW/mm2)
Red
(630nm)
19.5mW

9.7mW
(309mW/mm2)
7.7mW
(245mW/mm2)
2.4mW
(253mW/mm2)
Crimson
(660nm)
22.8mW

11.5mW
(366mW/mm2)
9.1mW
(290mW/mm2)
2.8mW
(295mW/mm2)
Infrared 1
(850nm)
21.3mW

10.7mW
(341mW/mm2)
8.6mW
(274mW/mm2)
2.6mW
(274mW/mm2)
Infrared 2
(940nm)
21.5mW

10.4mW
(331mW/mm2)
8.3mW
(264mW/mm2)
2.5mW
(263mW/mm2)
Near-Infrared 1
(740nm)
12.3mW
6.5mW
(206mW/mm2)
5.2mW
(165mW/mm2)
1.6mW
(163mW/mm2)
Near-Infrared 2
(760nm)
14.7mW7.8mW
(250mW/mm2)
6.3mW
(200mW/mm2)
1.9mW
(198mW/mm2)
Near-Infrared 3
(780nm)
11.0mW5.7mW
(180mW/mm2)
4.5mW
(144mW/mm2)
1.4mW
(143mW/mm2)
Near-Infrared 4
(810nm)
11.7mW6.1mW
(195mW/mm2)
4.9mW
(325mW/mm2)
1.5mW
(154mW/mm2)
Ultraviolet 1
(365nm)
28.1mW15.4mW
(489mW/mm2)
12.3mW
(391mW/mm2)
3.7mW
(388mW/mm2)
Ultraviolet 2
(385nm)
42.0mW23.0mW
(732mW/mm2)
18.4mW
(586mW/mm2)
5.5mW
(581mW/mm2)
Ultraviolet 3
(405nm)
41.8mW22.5mW
(717mW/mm2)
18.0mW
(573mW/mm2)
5.4mW
(569mW/mm2)

*Measured at the tip of a PlexBright High Durability Optical Patch Cable with a 200/230µm fiber 1.0m long.   

**Measured at the tip of a PlexBright 200/230µm fiber diameter Fiber Stub Implant or 225/245µm fiber diameter magnetic fiber stub implant connected to a PlexBright High Durability Optical Patch Cable with a 200/230µm fiber 1.0m long.

***Measured at the tip of a PlexBright 110/125µm fiber diameter Fiber Stub Implant connected to a PlexBright High Durability Optical Patch Cable with a 200/230µm fiber 1.0m long.

A Plexon Sales Engineer can help you determine the best optogenetic system configuration to meet your research goals.