Hoya has been granted a patent for an optical element that includes a colored layer positioned inside a glass body. The colored layer has a thickness of 1-300 µm and an optical density of 2.0 or more at a wavelength of 750 nm. This invention can be used in optical apparatus. GlobalData’s report on Hoya gives a 360-degree view of the company including its patenting strategy. Buy the report here.
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According to GlobalData’s company profile on Hoya, AI-assisted medical imaging was a key innovation area identified from patents. Hoya's grant share as of September 2023 was 42%. Grant share is based on the ratio of number of grants to total number of patents.
Patent granted for an optical element with a colored layer
A recently granted patent (Publication Number: US11774649B2) describes an optical element with a colored layer inside a glass body. The colored layer is positioned away from the optical function surface of the glass body and extends inside it. The thickness of the colored layer ranges from 1 to 300 µm, and it has an optical density of 2.0 or more at a wavelength of 750 nm.
The optical element can have various applications depending on its specific design. In one embodiment, the optical function surface of the element comprises a combination of light-transmissive surfaces and light-shielding surfaces. The light-shielding surfaces are formed by multiple colored layers. This configuration can be used in a parallax barrier, a zone plate, or a glass scale for an optical encoder.
Additionally, the optical element can be used in various optical apparatuses. For example, it can be incorporated into lenses, flat parallel plates, cover glasses, optical filters, beam splitters, and prisms. The colored layer is provided at the optical function surface of these elements, enhancing their optical properties.
Another embodiment of the optical element includes a zone plate, where the colored layers form the light-shielding surfaces of the plate. This configuration allows for precise control of light transmission and can be beneficial in applications requiring focused or diffracted light.
Overall, this granted patent introduces an optical element with a colored layer inside a glass body, offering improved optical properties. The element can be used in various optical devices and systems, providing enhanced functionality and performance.
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GlobalData Patent Analytics tracks bibliographic data, legal events data, point in time patent ownerships, and backward and forward citations from global patenting offices. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies across the world’s largest industries.
