The use of acrylic lenses and the principle of polarizers


Acrylic has the advantages of light weight, low price, and easy molding. Its molding methods include casting, injection molding, machining, and acrylic thermoforming. Especially for injection molding, it can be mass produced, the manufacturing process is simple, and the cost is low. Therefore, its application is becoming more and more extensive. At present, it is widely used in instrument and meter parts, automobile lights, optical lenses, transparent pipes, etc.

  Acrylic is the best new material for sanitary ware after ceramics. Compared with traditional ceramic materials, besides the unparalleled high brightness, acrylic has the following advantages: good toughness, not easy to break; strong repairability, as long as the soft foam is dipped in toothpaste, the sanitary ware can be wiped new; soft texture, winter There is no icy feeling; the colors are bright, which can meet the individual pursuit of different tastes. Optical lenses.

  Using acrylic to make basins, bathtubs, and toilets, they are not only exquisite in style, durable, but also environmentally friendly. The radiation is almost the same as the radiation of the human body's bones. Acrylic sanitary ware first appeared in the United States and currently accounts for more than 70% of the entire international market. Due to the difficulty and high cost of acrylic production, there are many low-quality and inexpensive substitutes on the market.

   These substitutes are also called 'acrylicOrdinary organic board is cast with ordinary plexiglass cracking material and pigment, the surface hardness is low, it is easy to fade, and the polishing effect is poor after sanding with fine sand. The composite board has only a very thin layer of acrylic on the surface and ABS plastic in the middle. It is easy to delamination due to thermal expansion and contraction during use. The true and false acrylic of the optical lens can be identified from the slight chromatic aberration and polishing effect of the sheet section

  1. Architectural applications: shop windows, soundproof doors and windows, lighting shades, telephone booths, decorative colors Mirror, etc.

  2, advertising applications: light boxes, signs, signs, display racks, etc.

  3, transportation applications: train , Car mirrors, car lenses, etc.

  4. Medical applications: baby incubators, various surgical medical appliances and civilian products: handicrafts, cosmetic mirrors, brackets, aquariums, toys Mirror, etc.

  5. Industrial applications: instrument surface panels and covers, etc.

  5, lighting applications: fluorescent lamps, pendant lamps , Street lampshade, LED reflector, acrylic reflector, etc.

The principle of    polarizer

   polarized lens, which only allows natural light The lens through which the light of the focusing lens in a particular polarization direction passes. We all know that light travels in a straight line, which is the particle nature of light; at the same time, light also travels in the form of waves, which is the wave nature of light, so light is also called light wave. Light waves have vibrations in all directions, and polarizers use this wave of light.

   The core of the polarizer is the polarizing film. The polarizing film has a dichroic transparent film, which allows the light vibration parallel to the transmission axis to pass through, and perpendicular to this Directional light is absorbed. This phenomenon is called polarization of light.

   The light passing through is the light in the same vibration direction, which is called polarized light. The reflected light is absorbed because the light becomes perpendicular to the transmission axis of the polarizing film after being reflected. The polarizing lens uses this principle to effectively eliminate the strong reflected light and astigmatic light, so that the light aspheric mirror becomes soft, so that the scene that people see is naturally clear. The polarizer can also effectively absorb 99% of UVA and UVB, which protects the eyes well. It is the first choice for driving, fishing, skiing, traveling, etc.

   But the polarizer is not a see-through lens. When you buy a polarizer, there will be a test piece with some pictures in it. You can see it with the polarizer. In fact, this test piece is specially made. It uses the principle of polarized light to make the polarizer see the parallel light emitted by the picture inside, so that you can see the picture hidden inside. It is not a perspective. This is just to detect whether it is a real polarizer. Methods. Now some manufacturers have produced mahjong tiles with the principle of polarized light, and there is an image of parallel light embedded behind the tiles. As long as you wear a polarizing lens, you can know what tiles are from the back of the tiles!

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