Under-screen Camera Lens Protrusion Reduces Screen Aperture
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current under-screen camera modules have a large camera head size, resulting in a large screen opening that compromises display quality and user experience, while also facing challenges in meeting high pixel, large aperture, and small size requirements without sacrificing image quality.
Innovation Solution
The proposed solution involves an optical lens design with a first lens having a protrusion portion and a second lens component with a light inlet hole, where the first lens is adhered to the second lens component using a first adhesive material, and the relative positions are actively calibrated to form an imageable optical system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the camera head size is reduced to minimize screen opening aperture, then the screen opening aperture is reduced, but it becomes difficult to meet high pixel, large aperture, and small size requirements while maintaining image quality
Solution Approach 1:
The first lens is nested within the second lens component, with the first lens having an outer diameter not larger than the light inlet hole aperture. This nested configuration allows the optical system to achieve high pixel density and large effective aperture while minimizing the overall camera module head size, thereby reducing the screen opening aperture requirement without compromising image quality
Solution Approach 2:
The first lens protrudes toward the object side from the second lens component, utilizing the depth dimension to achieve better imaging performance. This dimensional arrangement allows the optical system to maintain large aperture and high pixel quality while reducing the lateral footprint, thus minimizing the screen opening aperture
2Area of stationary object
If the screen opening aperture is reduced, then the display effect is improved, but the field of view of the lens is affected by the screen aperture
Solution Approach 1:
The nested configuration of the first lens within the second lens component allows the optical system to achieve a larger effective field of view while passing through a smaller screen opening. The protrusion structure enables the lens to extend closer to the display surface, capturing wider angles of light without being constrained by the reduced aperture size
3Area of stationary object
If the screen opening aperture is reduced, then the display effect is improved, but stray light affects the imaging quality
Solution Approach 1:
The nested structure with the first lens protruding from the second lens component creates a more compact optical path that reduces the chances of stray light entering the imaging system. The precise alignment and close integration of the nested lenses minimize light leakage and improve image contrast
Solution Approach 2:
The first lens acts as an intermediary element between the screen opening and the second lens component, filtering and directing light more effectively. This intermediate structure helps block stray light while maintaining the desired field of view and imaging quality
Data Source
AI summary
An optical lens (1000) includes a first lens (110) and a second lens component (200). A central area of a first surface (112) of the first lens (110) protrudes to an object side to form a protrusion portion (111), and a top surface (113) of the protrusion portion (111) forms an optical area (113a), and a first structural area (115) surrounds the protrusion portion (111). The second lens component (200) includes a second lens barrel (220) and at least one second lens (210), and a top of the second lens barrel (220) is provided with an extension portion (221) extending inwards, so as to form a light inlet hole (222) of the second lens component (200). Moreover, the topmost second lens (210) has a third surface (211) located at the object side, and the third surface (211) includes an optical area (211a) at center, an inner structural area (211b) surrounding the optical area (211a), and an outer structural area (211c). The outer structural area (211c) presses against the bottom surface of the extension portion (221), and the inner structural area (211b) is exposed outside the extension portion (221). The first lens (110) is bonded to the second lens component (200), and an outer diameter of the first lens (110) is not greater than a diameter of the light inlet hole (222). According to the optical lens (1000), a diameter of a hole provided on a screen can be reduced without sacrificing the imaging quality. Also disclosed are a camera module, an under-screen camera assembly, a manufacturing method of the optical lens (1000), and a manufacturing method of the camera module.