Optical filter, camera module and electronic device including same

Abstract

Optical filters, and camera modules and electronic devices including the same are disclosed. The filter includes a near infrared absorbing layer on a polymer film. The polymer film has an a* of about -5.0 to about +5.0 and a b* of about -5.0 to about +5.0 in color coordinates expressed by the CIE Lab color space. The near-infrared absorbing layer may be configured to transmit light in a visible region and selectively absorb at least a portion of light in a near-infrared region. The near-infrared absorbing layer includes a first near-infrared absorbing material including a copper phosphate compound and a second near-infrared absorbing material including at least two different organic dyes. The second near-infrared absorbing material has a maximum absorption wavelength (λ 最大 ).

Description

Optical filter, and camera module and electronic device including the same CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application requires Korean Patent Application No. 10- filed at the Korean Intellectual Property Office on November 1, 2017 2017‑0144897, the entire contents of which are hereby incorporated by reference. technical field

[0003] An optical filter (optical filter) and a camera module and electronic device including the same are disclosed. Background technique

[0004] Recently, electronic equipment such as a hand including an image sensor that stores an image as an electrical signal has been widely used computer, digital camera, camcorder (camcorder) and camera (camera).

[0005] The electronic device may include a filter having near-infrared absorption capabilities to reduce or prevent Generation of optical distortion (distortion) caused by light in the region of the visible light region.

[0006] This filter is typically mounted in front of t...

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