3mm Round Top with Frosted Lens LED - UV / Purple LED - Ultra Bright

The 3mm Frosted UV Purple LED has a frosted / milky lens that scatters light evenly in all directions, eliminating the visible bright point that clear-lens LEDs produce. The result is a soft, uniform glow — the LED looks like it is emitting light from the entire lens surface, not from a single point inside. This is the right choice when the LED will be visible to the eye or shining through a translucent material.

Note: Diffused purple LEDs produce a synthetic purple glow that may have a slight pinkish hue. They do not have true UV properties and will not activate fluorescent materials. For actual UV/blacklight effects (fluorescent paint, invisible ink, mineral inspection), use our clear-lens UV LEDs which output at 395–405nm with genuine ultraviolet wavelengths.

Why diffused instead of clear?

Clear-lens LEDs produce a focused, directional beam with a visible bright die point — great for signals and flashlights, but inside a translucent prop, model building, or LEGO brick, that bright point looks wrong. Frosted LEDs scatter the light so the entire lens glows evenly. The rule: use clear for focused/directional, use diffused for glow/ambient.

Common applications

• LEGO lighting mods: decorative purple glow for cosplay props. The frosted / milky lens produces a smooth glow through translucent LEGO bricks — no visible point source. Used by Brickstuff, Light My Bricks, and BriksMax kit builders. Clear for headlights, diffused for everything else.
• Cosplay and prop lighting: decorative purple glow for cosplay props, Warhammer psychic effects, escape room accent lighting, and party/event decorations. Behind translucent materials (resin, Worbla, frosted acrylic), the diffused output creates a natural “the object is glowing” effect.
• Model railroad building windows: A diffused LED inside a model structure illuminates the whole interior evenly — no “flashlight shining out” effect. 3mm fits HO and N scale structures.
• Warhammer and miniature wargaming — plasma weapon glow, power sword energy, eye lenses, terrain braziers and fire effects. Diffused LEDs are strongly preferred among miniature painters and terrain builders for realistic glow effects.
• Night lights and accent lighting: Inside 3D-printed enclosures, frosted glass, or resin castings for a gentle ambient glow. The diffusion prevents harsh glare.
• Aquarium moonlighting: Blue diffused LEDs provide soft lunar simulation for nighttime viewing without stressing fish or promoting algae.
• Photography light painting: Diffused LEDs produce smooth, creamy light trails in long-exposure photography. Clear LEDs create trails with a bright core.

Standard T-1 through-hole footprint. Fits all 3mm LED holders, bezels, and panel-mount clips.

Also available: 1.8mm (smaller) · 5mm (larger)

Sold individually (1 LED per quantity ordered).