BDR1L Beam Diffuser

Product Description

• Scatters and absorbs laser beam energy;
• SM1 (1.035”-40) external thread with locking ring;
• Compatible with 30mm cage systems and Ø1 inch series lens sleeves;
• M4 screw hole for mounting connecting rods;
• When used with high-power lasers, the surface temperature will rise significantly—do not touch the beam diffuser directly.

The beam diffuser is a common safety device in laser laboratories used to absorb laser energy. It can scatter and absorb continuous-wave (CW) or pulsed lasers multiple times within the device, ultimately converting the energy into heat. The laser input aperture is Ø17.2mm; the incident laser beam irradiates a conical top surface for scattering, resulting in minimal reflected stray light. It is recommended for CW or pulsed lasers with a maximum power of 10W.

Model	BDR1L
Specification	Ø26.3×48.5mm (excluding the locking ring)
Input Aperture	Ø17.2mm
Thread Type	SM1 (1.035”-40) external thread, M4 screw hole
Weight	54.0g
Material	7075 Aluminum Alloy

Technical Description

(1) The beam diffuser is a commonly used safety device in laser laboratories for absorbing laser energy. It can scatter and absorb continuous-wave (CW) or pulsed lasers multiple times inside the device, eventually converting the energy into heat. The laser input aperture is Ø17.2mm; the incident laser beam irradiates a conical top surface for scattering, with very little stray light reflected back. It is recommended for CW or pulsed lasers with a maximum power not exceeding 10W.

Note: If the laser pulse power is too high, the surface of the conical top may peel off, and the amount of scattered light may increase. However, as long as there is no obvious deformation of the conical part, the performance of the beam diffuser will not be significantly affected.

(2) The barrel is equipped with an SM1 (1.035”-40) external thread input aperture, compatible with 30mm cage systems and Ø1 inch lens sleeves. During use, simply introduce the laser beam into the input aperture. To block the laser optical path, a Ø1 inch lens sleeve can be directly mounted on the input aperture.

(3) The M4 mounting hole at the bottom is used for installing connecting rods, suitable for free-space setup.

Assembly

Application Examples

Engineering Drawings

BDR1L Engineering Drawing