US Patent Application 18120872. SPECTRAL FILTER, IMAGE SENSOR INCLUDING THE SPECTRAL FILTER, AND ELECTRONIC DEVICE INCLUDING THE SPECTRAL FILTER simplified abstract
SPECTRAL FILTER, IMAGE SENSOR INCLUDING THE SPECTRAL FILTER, AND ELECTRONIC DEVICE INCLUDING THE SPECTRAL FILTER
Organization Name
Inventor(s)
Younggeun Roh of Suwon-si (KR)
SPECTRAL FILTER, IMAGE SENSOR INCLUDING THE SPECTRAL FILTER, AND ELECTRONIC DEVICE INCLUDING THE SPECTRAL FILTER - A simplified explanation of the abstract
- This abstract for appeared for US patent application number 18120872 Titled 'SPECTRAL FILTER, IMAGE SENSOR INCLUDING THE SPECTRAL FILTER, AND ELECTRONIC DEVICE INCLUDING THE SPECTRAL FILTER'
Simplified Explanation
The abstract describes a spectral filter that is used in image sensors and electronic devices. The spectral filter consists of multiple layers, including first filter arrays with band filters and second filter arrays. The unit filters within the spectral filter have reflecting plates and cavities with different central wavelengths. Each cavity has lower and upper cavity layers with an intermediate light absorption layer in between. The band filters transmit light in specific bands, and multiple cavities have the same effective refractive index. Overall, this technology allows for precise filtering of light in electronic devices.
Original Abstract Submitted
Provided are a spectral filter, and an image sensor and an electronic device each including the spectral filter. The spectral filter includes a plurality of first filter arrays respectively including a plurality of band filters and a plurality of second filter arrays provided on the plurality of first filter arrays. The plurality of unit filters includes a first reflecting plate, a second reflecting plate provided above the first reflecting plate, and a plurality of cavities provided between the first and second reflecting plates and each having central wavelengths of different bands. Each of the plurality of cavities includes a lower cavity layer, a upper cavity layer, and an intermediate light absorption layer provided between the lower cavity layer and the upper cavity layer. Each of the plurality of band filters is configured to transmit light in a specific band, and two or more of the plurality of cavities are configured to have a same effective refractive index.
