What is the IR BandPass filter?
Infrared (IR) light has a wavelength or frequency that is longer than red and is not visible to the human eye. People can see light on wavelengths from red to violet, a range of visible light. IR light is useful for a wide range of chemical tests, detection of safety movement and astronomy. The IR BandPas filter is a glass or crystal flat filter with a coating that blocks all light frequencies except for infrared light. Laboratory devices look at chemicals at various light frequencies, including infrared, both as solid and liquids. The IR BandPass filter is used when the device must block additional frequencies that could confuse or disrupt the machine analysis.
Some chemical analyzes can be performed by burning the sample in the flame and looking at the light that implies. Different atoms will be the light frequencies of standard flame colors that can be seen in the infrared range with the IR band filter. This analyticalThe device is called a flame photometer or spectrophotometer.
When certain materials are exposed to different light frequencies, fluoresce, which is a glowing effect caused by reacting light with molecules. Some natural minerals release infrared light when exposed to blue-green light frequencies. Photos can be taken using a camera equipped with an IR Bandpas filter for blocking visible light, but allow you to view IR.
Infrared light proved to be valuable for exploring works of art and archeology, studying ancient cultures and buildings. For many centuries, artists have produced paintings that have been damaged or hidden by later attempts to repair or restore images. Images exposed to infrared light will often be hidden paintings, even older paintings covered with another work when the artist reused their canvases. Ancient cave paintings also showed fromHigh details when exposed to infrared light.
Example of hidden details found with infrared light is located in Leonardo da Vinci Mona Lisa. Paints, painted at the beginning of the 16th century, were a very complex and estimated 30 layers of different colors applied by the artist. Later attempts to maintain or repair painting have hidden many details, as well as the effects of time and exposure to air. At the beginning of the 21st century, the infrared camera was equipped with a band IR filter and scientists exposed an image of infrared light. When the pictures were explored, the fine hair details, clothes and other details of Mona Lisa and other details were clearly visible.
cameras can be used to view objects at night in the dark, either to see the infrared energy that a person or animal is released, or using an infrared light of the forward camera. Many infrared safety cameras contain small light emitting diodes (LEDs) that provide primarily infrared light. These LEDs canBe equipped with an IR BandPass filter to ensure only specific infrared frequencies to illuminate the area covered with a camera lens, which improves image quality.
Infrared light is widely used in astronomy, studying stars and planets in a visible universe. Dust clouds that cover large areas of space can hide stars at a long distance from the ground. IR filters connected to the camera equipment can view and record images from binoculars on the ground or satellite orbit country. Many details that are not visible in normal light can be clearly seen in infrared photographs, and these details help astronomers understand the nature of how our universe has created and changes.