Polaroid Introduction
Dichroic organic crystals, such as iodoquinine sulfate, tourmaline or polyvinyl alcohol film, are soaked in iodine solution, stretched at high temperature, dried, and then stuck between two glass sheets to form a polarization It has a specific direction, allowing only the vibration parallel to that direction to pass, this direction is called the direction of transparent vibration.
A polarizing film is an artificial film with a large number of tiny grains arranged in a certain rule.It has the ability to selectively absorb light vibration in different directions, so that the film has a special direction.When a beam of natural light hits When it is on the diaphragm, the light vibration component perpendicular to this direction is completely absorbed, and only the light vibration component parallel to this direction is passed to obtain linearly polarized light. Using this feature, a polarizing plate can be made.