SP600短波通滤光片（T＞90%@400-590nm，OD4@610-1200nm）

Heat Shielding for Medical & Biological Imaging

Because this filter heavily blocks the 610-1200nm range (which contains mostly heat-carrying near-infrared energy), it acts as a thermal shield. It allows a camera, microscope, or medical scope to clearly see a subject in visible light (up to yellow) without accidentally burning or drying out sensitive biological tissues and expensive camera sensors with infrared heat.

Recommended light source:

• Tungsten-Halogen Lamps: These traditional bulbs are notorious for throwing off a massive amount of infrared heat. The filter's main advantage is acting as a safety barrier, stripping away the dangerous heat while letting the useful, safe visible light pass through.
• High-Power Fiber Optic Illuminators: Often used in endoscopes or close-up industrial scopes, the filter ensures the intense, concentrated light being piped through doesn't overheat the delicate area being examined.

Machine Vision and Factory Automation

Automated cameras on assembly lines often need high contrast to quickly spot defects, read barcodes, or align parts. This filter helps the camera focus exclusively on cool colors (violet to yellow) while acting like heavy-duty sunglasses to block out distracting red light, infrared glare from hot machinery, or ambient sunlight bouncing around the factory floor.

Recommended light source:

• Blue/Green LED Ring Lights: These provide bright, shadow-free illumination. The filter ensures the camera only sees this specific lighting and entirely ignores stray infrared background noise.
• High-Intensity White LEDs: The filter neatly chops off the red and near-infrared tail of the white light, providing the camera with a cleaner, high-contrast view of the inspected materials without sensor glare.