The Frosted Outer Glass Tube is a precision optical component with an outer diameter of 32.7mm, an inner diameter of 30mm and a length of 85mm, manufactured from borosilicate glass or fused silica. The outer wall is evenly frosted to produce a stable light diffusion effect, while the inner wall remains smooth and transparent for efficient light transmission. The tube wall is uniform and free of bubbles and striae, ensuring consistent optical behavior along its full length. With thermal shock resistance, acid and alkali corrosion resistance and outstanding thermal stability, the tube is a dependable component for light homogenizing and spectral testing systems.

• Borosilicate or fused silica material: Both substrates are available to match application and cost requirements.
• Evenly frosted outer wall: The uniform frosted surface produces consistent light scattering across the tube.
• Smooth transparent inner wall: The clean bore transmits light efficiently without loss or distortion.
• Uniform bubble-free and striae-free wall: Consistent wall quality ensures stable optical performance.
• Outstanding thermal and chemical stability: Thermal shock resistance and acid and alkali corrosion resistance keep the tube reliable in service.

The Frosted Outer Glass Tube is designed for optical illumination and testing systems that require controlled light diffusion. It is widely used as a light homogenizing outer protective sleeve, converting point or beam light into uniform diffuse output while protecting the source. In analytical systems, the tube serves as a matching outer tube for spectral testing, providing consistent scattering and transmission. The component is also adopted as an optical light homogenizing fixture, supporting stable illumination in measurement setups. In calibration work, it functions as a scattering part for standard light sources, delivering repeatable reference output. Additionally, the tube works as an optical protective sleeve for laboratory use, shielding optical paths from dust and damage.

• Delicate frosted outer surface hard to peel off: The durable frosted finish maintains its diffusion quality over time.
• High machining precision: Tight dimensional control ensures accurate fit in assemblies.
• Smooth inner wall without light loss: Efficient transmission supports matched assembly with inner doped glass tubes.
• Crack resistant with consistent homogenizing: The tube withstands temperature changes and delivers uniform light output.