Sensor Component Mask Layer Ambient Light Shielding
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Solution Overview
Problem
Conventional image capturing apparatuses suffer from the interference of ambient light, which affects the imaging effect by transmitting stray light through components and reducing the signal-to-noise ratio.
Innovation Solution
The image capturing apparatus incorporates a light-transmitting cover plate, a light source module, and a sensing module with a mask layer and catadioptric component, where the sensor component's photosensitive surface faces downward, and the mask layer shields ambient light, allowing only effective light to be received by the sensor, thereby improving the imaging effect.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If ambient light is transmitted through components of the image capturing apparatus, then the structure remains simple and components remain transparent, but the imaging effect deteriorates due to large background signal affecting the signal light
Solution Approach 1:
The sensor component is divided into two surfaces: a first surface that receives signal light from the light source module, and a second photosensitive surface that captures reflected light from the object. This segmentation allows different surfaces to perform different functions, enabling the first surface to reject ambient light while the second surface performs photoelectric conversion, thereby improving imaging effect without requiring complete structural redesign
Solution Approach 2:
The mask layer is positioned specifically at the first surface of the sensor component, creating a localized light-shielding structure only where needed. This local application of light shielding allows the majority of the sensor component to remain exposed and functional, maintaining structural simplicity while effectively blocking ambient light from reaching the photosensitive surface
2Measurement precision
If a mask layer is added to shield ambient light, then the imaging effect improves, but the device complexity and manufacturing difficulty increase
Solution Approach 1:
The mask layer is integrated with the first surface of the sensor component, forming a unified structure that combines light shielding and photoelectric conversion functions. This merging eliminates the need for separate light-shielding components and simplifies the manufacturing process, as the mask layer can be formed as part of the sensor component fabrication process rather than as a separate assembly step
Solution Approach 2:
The catadioptric component serves as an intermediary between the object to be imaged and the second photosensitive surface of the sensor component. It redirects reflected light at specific angles to reach the photosensitive surface while blocking direct ambient light paths, thereby improving signal-to-noise ratio through optical mediation rather than requiring complex mechanical shielding structures
3Ease of operation
If the sensor component is configured with photosensitive surface facing downward, then testing becomes easier and direct photoelectric testing is enabled, but the structural design becomes more complex
Solution Approach 1:
Instead of the conventional configuration where the photosensitive surface faces upward toward the object, this invention inverts the sensor component orientation so that the photosensitive surface faces downward. This inversion enables direct photoelectric testing from below the device structure, simplifying testing procedures and enabling easier integration with test equipment, while the catadioptric component compensates for the inverted orientation by redirecting light paths appropriately
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
This configuration effectively suppresses ambient light, enhances the signal-to-noise ratio, and simplifies testing by allowing direct photoelectric testing, while reducing the overall thickness and cost of the apparatus.
Implementation Method 1
a first incident light generated by the light source module is reflected to the second surface of the catadioptric component by the first surface of the light-transmitting cover plate
Implementation Method 2
refracted and reflected on the second surface of the catadioptric component
Implementation Method 3
refracted and reflected on the second surface of the catadioptric component
Implementation Method 4
the mask layer is made of an opaque material
Implementation Method 5
the second surface of the sensor component is a photosensitive surface
Data Source
AI summary
The present disclosure provides an image capturing apparatus, an electronic equipment, and a terminal. The image capturing includes: a light-transmitting cover plate; a light source module disposed below a first surface of the light-transmitting cover plate; at least one sensing module including a mask layer and a sensor component, wherein the sensor component has a first surface and a second surface opposite to each other, the first surface of the sensor component is disposed opposite to the mask layer and the second surface of the sensor component is a photosensitive surface, and the mask layer is made of an opaque material; a catadioptric component having a first surface and a second surface opposite to each other, wherein the sensor component is disposed on the first surface of the catadioptric component. With technical solution of the present disclosure, the imaging effect of the image capturing apparatus can be improved.