Pavonine has developed a novel concept polarizing plate that integrates the functionality of lenses. This product, which eliminates the need for glass lenses, can be applied to modules for extended reality (XR) devices, promising to reduce weight and thickness.
Pavonine announced on the 17th the launch of a XR head-mounted device module named 'Thermoformed Curved Polarizing Plate,' which integrates lens and reflective polarizing functions on the grid polarizing plate.
The grid polarizing plate is a material that applies nano-patterns to a very thin metal sheet. The company manufactures a special polarizing plate through a spherical thermoforming process on this material, where half of the light passing through becomes polarized light, and the other half becomes reflected light. The key feature of this product is that it can replace the lenses used in the Pancake optical system, whether they are made of glass or plastic.
Due to the need for XR devices to be closer to the eyes and to manufacture smaller optical modules, they typically adopt a Pancake structure. This structure maintains the field of view by reflecting light multiple times, while reducing the focal length and thickness.
The principle of thin film reflective polarizer involves adding lens functionality through Pavonine's Korean spherical thermoforming process.
Pavonine integrates lens functionality onto the reflective polarizer using a spherical thermoforming process, as illustrated in the above diagram. This innovative approach simplifies the optical system, reducing light loss, improving transmittance, and reducing weight and thickness.
Pavonine's CEO, Lee Seong-joong, stated, "Previously, reflective polarizing films were attached to heavy and thick lenses. As a result, light transmittance and efficiency were reduced when passing through the lens and adhesive layers." He added, "By integrating lens and polarizing functionalities, we've simplified the design of the optical system, reducing light loss, improving transmittance, and reducing weight and thickness."
Pavonine is gearing up for mass production using the 300mm (12-inch) silicon master mold equipment developed in collaboration with the Korea Nanotechnology Research Institute. They can produce 240,000 pieces of pancake-structured thermoformed curved polarizing plates per month.
Translated from:etnews
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