18667005. TRANSMISSIVE LIQUID CRYSTAL DIFFRACTION ELEMENT simplified abstract (FUJIFILM Corporation)
Contents
TRANSMISSIVE LIQUID CRYSTAL DIFFRACTION ELEMENT
Organization Name
Inventor(s)
Kazuya Hisanaga of Minamiashigara-shi (JP)
Yukito Saitoh of Minamiashigara-shi (JP)
Yujiro Yanai of Minamiashigara-shi (JP)
TRANSMISSIVE LIQUID CRYSTAL DIFFRACTION ELEMENT - A simplified explanation of the abstract
This abstract first appeared for US patent application 18667005 titled 'TRANSMISSIVE LIQUID CRYSTAL DIFFRACTION ELEMENT
The transmissive liquid crystal diffraction element described in the patent application can diffract different polarized light components in the same direction while maintaining a polarization state during incidence.
- The element consists of first and second optically-anisotropic layers with liquid crystal alignment patterns that continuously rotate the orientation of the optical axis derived from a liquid crystal compound in at least one in-plane direction.
- Two retardation layers are positioned between the first and second optically-anisotropic layers, with opposite rotation directions of the optical axis in their liquid crystal alignment patterns.
- The retardation layers are positive C-plates or O-plates, with the positive C-plate meeting specific criteria outlined in the patent application.
Potential Applications: - Optical devices - Display technologies - Polarization control systems
Problems Solved: - Efficient diffraction of polarized light components - Maintenance of polarization state during light incidence
Benefits: - Enhanced optical performance - Improved control over polarized light - Versatile applications in various industries
Commercial Applications: Title: Advanced Optical Diffraction Element for Enhanced Display Technologies This technology can be utilized in high-resolution displays, augmented reality devices, and optical instruments, offering improved performance and functionality in these commercial applications.
Questions about the technology: 1. How does the liquid crystal alignment pattern in the optically-anisotropic layers contribute to the diffraction of polarized light components? 2. What specific criteria must the positive C-plate meet to be effective in the transmissive liquid crystal diffraction element?
Original Abstract Submitted
Provided is a transmissive liquid crystal diffraction element that can diffract different polarized light components in the same direction and can maintain a polarization state during incidence. The transmissive liquid crystal diffraction element includes: first and second optically-anisotropic layers each of which has a liquid crystal alignment pattern in which an orientation of an optical axis derived from a liquid crystal compound changes while continuously rotating in at least one in-plane direction; and two retardation layers that are disposed on a side of the second optically-anisotropic layer opposite to the first optically-anisotropic layer and between the first optically-anisotropic layer and the second optically-anisotropic layer, respectively, in which a rotation direction of the optical axis in the liquid crystal alignment pattern of the first optically-anisotropic layer is opposite to that of the second optically-anisotropic layer, a single period of the liquid crystal alignment pattern of the first optically-anisotropic layer is the same as that of the second optically-anisotropic layer, the retardation layer is a positive C-plate or an O-plate, and the positive C-plate satisfies Expression (1).
