BXZ-633-1-4X is a high-precision continuous zoom beam expander specifically designed for 633nm red lasers (the typical wavelength of He-Ne lasers). Manufactured with high-quality optical glass and precision coating technology, it delivers excellent transmittance and a high damage threshold in the red wavelength band.

The key advantage of this product is its continuous zoom function, offering an adjustable magnification range from 1× to 4×, allowing flexible adjustment of laser beam diameter without the need for lens changes to suit various experimental and processing requirements. The beam expander is optimized for diffraction-limited performance, maintaining excellent beam quality throughout the entire 1× to 4× magnification range, supporting a maximum input beam diameter of approximately 4-6mm depending on magnification.This beam expander adopts a Galilean optical design with no internal focal point, effectively avoiding air ionization risks in high-power laser applications. Optical elements feature high-performance anti-reflective coating (AR Coating 633nm), achieving transmittance exceeding 96%. The zoom ring is engraved with magnification markings, allowing precise beam expansion and collimation by rotating to the corresponding mark for simple and intuitive operation. Adjustable divergence enables optimal matching with different laser systems, and a locking mechanism is incorporated to maintain stable magnification after focusing adjustment.

The BXZ-633-1-4X is widely used in optical interferometry, holographic imaging, laser display, biomedical imaging, scientific research, and laser measurement applications requiring high flexibility, making it an ideal optical solution for dynamic beam size adjustment in 633nm red laser systems.