Dual aperture camera with improved color gamut and operating method of thereof

摘要

Disclosed is a dual aperture camera which includes a dual band filter and a CMOS image sensor (CIS). The dual band filter is adapted to filter light signals to receive a light signal of a first wavelength range and receive a light signal of a second wavelength range through a pin hole included therein. The CIS is adapted to process the light signal of the first wavelength range and the light signal of the second wavelength range received through the dual band filter.

主权项

1. A dual aperture camera, comprising:
a lens; a lens aperture, wherein light in a first wavelength range and light in a second wavelength range passes through the lens and the lens aperture; a dual band filter that filters out a first portion of the light in the second wavelength range, wherein the dual band filter comprises a pin hole through which a second portion of the light in the second wavelength range passes through the dual band filter; a CMOS image sensor (CIS) that processes the light in the first wavelength range and the second portion of the light in the second wavelength range that passes through the pin hole in the dual band filter; and an image signal processor that extracts three-dimensional depth information of an object based on the light in the first wavelength range processed by the CIS and the second portion of the light in the second wavelength range that passes through the pin hole in the dual band filter and processed by the CIS, wherein the light in the first wavelength range is in a visible light wavelength range and the light in the second wavelength range is in an invisible light wavelength range, wherein the visible light wavelength range is between approximately 400 nm and 650 nm, and wherein the invisible light wavelength range is between approximately 915 nm and 965 nm; wherein the dual band filter reduces the amount of the light in the second wavelength range incident onto RGB cells of the CIS to prevent an error due to IR (infrared) signals incident onto the RGB cells upon extracting of a depth; and an infrared cell amplifies an analog gain of the second portion of the light in the second wavelength range received by the CIS.