New Polarizer/Polarizer to eliminate reflection 25.5 27 30.5 34 35.5 37 37.5 39 40.5mmCPL*P0.5mm
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Pitch 0.5mm , Three locking screws, brand new with packaging box.
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One end of the polarizer can be used to connect the lens, and the other end can be freely rotated and adjustedThe angle is reduced, which is convenient to deal with the glare produced by different angles, and minimizes the glare,Provide flexibility and ease of use.
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In machine vision inspection projects, the surface of many tested objects will emit messy glare. These stray lights
\Seriously affect the image quality, reduce the contrast of the measured features, in order to reduce or eliminate stray light, glare and other interference, in many visual inspection, measurement, positioningIsometricWhen the system is constructed, we need to use a polarizer in front of the lens.
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Linearly polarized light: After natural light passes through a polarizing device, only one direction of polarized light can pass through the device, and we get linearly polarized light. The vibration direction of linearly polarized light is determined.
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Circularly polarized light: The polarization direction of this light rotates regularly. The intensity of the light vector is kept constant during the rotation. That is, the light vector rotates along a circle. This is circularly polarized light. After averaging over our observation period, circularly polarized light looks the same as natural light. However, the polarization direction of circularly polarized light changes according to a certain law, while the polarization direction of natural light changes randomly and irregularly.
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Polarization filters can eliminate the reflected light from water, glass, and other non-metal surfaces, because the polarization state of the reflected light on these interfaces has changed.
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【How to use polarizer】:
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The polarizer is usually composed of two iron rings. One iron ring can be installed in front of the lens and stops moving after being tightened. The other is carrying a piece of glass. After the iron ring is tightened, it can still rotate freely. When using the polarizer, we need to observe the reflections that need to be eliminated in the viewfinder, and pinch the front ring of the polarizer to rotate slowly.——Soon you will find the best rotation angle to make the reflection disappear.
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Polarizer Polarizer, also called polarizer, is a kind of color filter. The excellent function of the polarizer is to selectively let light that vibrates in a certain direction pass through. It is commonly used in color and black-and-white photography to eliminate or weaken the strong reflection of non-metallic surfaces, thereby eliminating excessive light spots. A piece of tiny polarizing crystal with orientation effect is sandwiched by two pieces of optical glass(Like mica)composition.
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Simply explain: you can filter out reflections. After natural light is emitted from the light source and reflected by the surface of the object, the properties of the light are secretly changed. We call this kind of light polarized light. Human eyes can’t distinguish the difference between polarized light and natural light, so we can’t intuitively“see”This change. But the polarizer is like a filter, which allows natural light to pass through, but can intercept some polarized light, so that it can be removed artificially“Reflective”Impact.
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