Camera View Angle Testing Device with Segmented Light Sources
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Solution Overview
Problem
Conventional camera view angle testing devices require multiple light sources, leading to physical interference and are inadequate for measuring super wide angle views exceeding 180°, especially in vehicle cameras where horizontal view angles are more critical.
Innovation Solution
A camera view angle testing device with a reduced number of light sources, including a primary light source facing the image sensor and additional light sources arranged on both sides to measure both vertical and horizontal view angles, allowing for adjustment to correct focus and tilt issues.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple light sources are used to measure both horizontal and vertical view angles, then measurement capability is improved, but light source interference and device complexity increase
Solution Approach 1:
The patent divides the view angle measurement into two independent segments: horizontal view angle measurement and vertical view angle measurement. Each segment uses its own dedicated light source, allowing independent measurement without interference. The horizontal light source measures only horizontal angles while the vertical light source measures only vertical angles, eliminating the interference problem that occurs when multiple light sources are combined in conventional devices.
Solution Approach 2:
The patent introduces a beam splitter as an intermediary component that enables a single light source to serve dual purposes. The beam splitter divides the light path, allowing one light source to illuminate targets for both horizontal and vertical view angle measurements simultaneously, thereby reducing the total number of light sources needed while maintaining full measurement capability.
2Adaptability or versatility
If conventional view angle testing devices are used for super wide angle cameras, then existing device compatibility is maintained, but measurement accuracy for angles exceeding 180° deteriorates
Solution Approach 1:
The patent implements dynamic adjustability in the light source positioning system, allowing the light sources to be moved to different angular positions around the camera lens. This dynamic positioning capability enables accurate measurement of super wide angles exceeding 180° by placing light sources at optimal positions that conventional fixed devices cannot achieve. The system can adapt its configuration to match the specific view angle requirements of different camera types.
Solution Approach 2:
The patent changes the geometric parameters of the measurement system, specifically the angular positions and distances of light sources relative to the camera lens. By adjusting these parameters, the system can accommodate super wide angle measurements that conventional devices with fixed parameters cannot handle. The adjustable parameters allow the device to optimize its measurement geometry for each specific camera being tested.
3Adaptability or versatility
If multiple light sources are arranged to cover all view angles, then comprehensive measurement is achieved, but physical interference between light sources increases
Solution Approach 1:
The patent segments the measurement functions by assigning separate light sources to specific measurement tasks. The horizontal light source is dedicated to horizontal view angle measurement while the vertical light source is dedicated to vertical view angle measurement. This segmentation eliminates the physical interference that occurs when multiple light sources are combined, as each light source operates independently in its own optical path without overlapping with others.
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 reduces manufacturing costs, minimizes light source interference, and enables accurate measurement of super wide angle views exceeding 180°, improving the reliability and efficiency of camera testing.
Implementation Method 1
a light source arranged to face a lens; a sensor unit arranged to receive the light passing through the lens
Data Source
AI summary
The present invention relates to a device for testing an angle of view of a camera. The present invention may comprise: a first light source which is arranged to face an image sensor, and has a first width and a second width longer than the first width; and a second light source and a third light source which are disposed on both sides of the image sensor in the direction of the first width, respectively. The present invention can inhibit an interference of the light source or a bracket supporting the light source by reducing the number of light sources. In addition, since it is possible to measure the angle of view of a camera by reducing the light sources, the present invention can reduce the manufacturing costs of a device for testing an angle of view of a camera.