Infrared Card
An Infrared Card, also known as an infrared detection card or laser viewing card, is a tool used to visualize infrared light, typically from lasers or other sources, by converting it into a visible light display. It’s a simple, low-cost way to check for the presence and position of infrared beams, making it useful for alignment, safety, and diagnostic purposes.
Here’s a more detailed explanation:
What it does:
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Converts invisible IR light to visible light:The card contains a material, often phosphorescent, that absorbs infrared radiation and then emits visible light when stimulated.
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Indicates presence and location:The illuminated spot on the card shows where the infrared beam is hitting, making it easy to see the beam’s path and focal point.
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Used for various applications:Infrared cards are used for aligning lasers, checking for infrared light leakage, visualizing infrared beams from various sources, and ensuring safety by detecting potentially harmful IR radiation.
How it works (phosphorescent example):
- Charging: The card is first exposed to visible light, which excites the phosphorescent material.
- Energy Storage: The excited phosphor material stores this energy.
- Release of Light: When infrared light hits the charged phosphor, it releases the stored energy as visible light, creating a bright spot on the card.
Key Features:
- Low cost: Infrared detection cards are relatively inexpensive compared to other methods of detecting infrared light.
- Easy to use: They are simple to operate and require no special training or equipment.
- Durable: Typically made of plastic, they are designed to be durable and withstand regular use.
- Portable: Their small size makes them easy to carry and use in various settings.
- Wide range of applications: Useful for aligning lasers, checking for IR leakage, visualizing beam paths, and safety checks.
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