Camera Module Spacer Geometry for Flare Suppression
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Solution Overview
Problem
Flare phenomena due to light scattering and reflection in camera modules, which negatively affect image quality, are not adequately addressed in existing camera modules.
Innovation Solution
A camera module design featuring a spacer with a non-circular hole on the object-side or sensor-side surface of lenses, combined with a reflective member and light-shielding member, to reflect, absorb, or scatter light traveling along abnormal paths and block unnecessary light from reaching the image sensor.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple lenses are stacked to achieve high resolution, then image quality is improved, but flare phenomena occur due to light scattering and reflection
Solution Approach 1:
The patent extracts and removes harmful light paths from the optical system by introducing light-shielding members and spacers with non-circular holes. These components selectively block light traveling along abnormal paths between lenses, extracting only the harmful portion while allowing useful light to pass through the optical system.
Solution Approach 2:
The patent introduces intermediary components (light-shielding members and spacers) between the lenses to control light paths. These intermediaries act as mediators that selectively block harmful light while allowing useful light to pass, resolving the contradiction between maintaining high resolution and preventing flare.
2Object-generated harmful factors
If light-shielding members are added to block flare, then flare is reduced, but device complexity increases
Solution Approach 1:
The patent merges the light-shielding function with existing structural components. The spacers that already exist between lenses are modified to include non-circular holes that serve as light-shielding features, and light-shielding members are integrated into the reflective member structure. This combining approach reduces the need for separate, complex light-shielding components.
Solution Approach 2:
The patent makes existing components multi-functional. The spacers not only maintain lens spacing but also serve as light-shielding elements through their non-circular hole design. The reflective member simultaneously performs reflection and light-shielding functions, reducing overall device complexity while maintaining flare reduction effectiveness.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The design effectively reduces flare intensity by blocking and redirecting light, thereby improving image quality and reliability of the camera module.
Implementation Method 1
a reflective member for reflecting, in a second direction, light incident from a first direction
Implementation Method 2
flare phenomena such as light scattering can occur due to reflection and scattering of light incident on the camera module
Implementation Method 3
A camera module design featuring a spacer with a non-circular hole on the object-side or sensor-side surface of lenses, combined with a reflective member and light-shielding member, to reflect, absorb, or scatter light traveling along abnormal paths
Implementation Method 4
an imaging lens that forms an image, and an image sensor that converts the formed image into an electrical signal
Data Source
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Figure 3
Figure 4
AI summary
A camera module disclosed in an embodiment of the invention comprises: a reflective member for reflecting, in a second direction, light incident in a first direction; a lens holder having a plurality of lenses aligned along the second direction; an image sensor that converts light refracted through the plurality of lenses into an electrical signal; and a plurality of spacers disposed on an outer periphery between adjacent two lenses, wherein the plurality of spacers include a first spacer arranged on a periphery of an object-side surface or a sensor-side surface of an n-th or n-1-th lens adjacent to the image sensor, and a shape of a hole of the first spacer may be non-circular.