
Small-Divergence Collimated LED LBSLED-400, 400 nm
LBSLED-400Design Tools
The LBSLED-400 is a small-divergence collimated monochromatic LED with a center wavelength of 400 nm (FWHM 19 nm), delivering up to 300 mW of collimated optical power from a 20 mm output aperture with a beam divergence of ≤ 3°. It is driven by the LBLED-CT4V controller (sold separately) and connects to standard SM1-threaded lens tubes, filter holders and irises.
Small-divergence collimated LEDs consist of collimating optics, a diffuser sleeve, and other mechanical components. This design enables an output beam divergence angle of less than 3° with minimal thermal damage, making it suitable for applications such as microscopy illumination sources and multi-color fluorophore excitation sources. The small-divergence collimated LED light source requires a 4V, 700mA (adjustable current) constant current source for driving. This collimated LED light source can be connected to other components via an SM1 internal thread or fixed and supported using M3 mounting holes on the heatsink end.
Note: The light source controller must be purchased separately.
Key Features
- Peak Wavelength: 365 / 400 / 480 / 530 / 630nm
- Divergence Angle: <3°
- Compatible Controller: LBLED-CT4V
Typical Applications
- Microscope illumination and transmitted-light sources
- Multi-colour fluorophore excitation
- Machine-vision and inspection lighting where a narrow beam is required
- Optical alignment and calibration
Installation
Installation method for small divergence angle collimated monochromatic LED

SKU: LBSLED-400 · Sourced from LBTEK · Distributed by WaveQuanta
| Center Wavelength | 400 nm |
| Center Wavelength Range | 400-405 nm |
| Maximum Optical Power | 300 mW |
| FWHM | 19 nm |
| Divergence Angle | ≤ 3° |
| Output Beam Diameter | 20 mm |
| Compatible Controller | LBLED-CT4V |
| Rated Forward Current | 700 mA |
| Forward Voltage | 4 V |
| Lifetime | >10000 h |
| Operating Temperature | 10~30 °C |
| Storage Temperature | 0~40 °C |
| Dimensions | Ø35 × 120 mm |
| Weight | 250 g |






