Camera Focus Adjustment Jig for Movable Arm Inspection
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Solution Overview
Problem
The existing methods for camera focus adjustment in manufacturing lines, where cameras are fixed to movable arms, require tedious procedures involving separate positioning of the movable arm and inspection target reference points, making the focus adjustment process cumbersome.
Innovation Solution
A camera focus adjustment jig and method that includes a connection arm with an adjusting unit and display parts on the surface of the adjusting unit, allowing focus adjustment using the fixing part as a reference point, eliminating the need for separate positioning of the movable arm and inspection target, and enabling simultaneous focus and view angle adjustments for multiple cameras.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the camera is fixed to a movable arm and focus adjustment is performed using separate reference points for the movable arm and inspection target, then the camera can be positioned to photograph the inspection target, but the focus adjustment procedure becomes tedious and complex
Solution Approach 1:
The patent merges the reference point functions by making the inspection target itself serve as the reference point for focus adjustment. The adjusting unit is positioned at a location equivalent to the inspection target position, allowing the camera to use the same reference point (the inspection target) for both positioning and focus adjustment, thereby eliminating the need for separate reference points and simplifying the operation procedure
Solution Approach 2:
The adjusting unit acts as an intermediary element that bridges the camera and the inspection target. It is positioned at a location equivalent to the inspection target position and provides a reference surface with display parts that facilitate focus adjustment without requiring the camera to be physically moved to the photographing position, thus simplifying the adjustment process while maintaining precision
2Measurement precision
If the camera is moved to the photographing position for focus adjustment, then accurate focus can be achieved, but the adjustment process requires moving the movable arm which increases procedure complexity
Solution Approach 1:
The adjusting unit is positioned at a location equivalent to the inspection target position, creating a reference copy that mimics the actual photographing conditions. This allows focus adjustment to be performed on the adjusting unit without moving the camera to the actual photographing position, thereby maintaining focus accuracy while reducing procedure complexity
Solution Approach 2:
The focus adjustment is performed preliminarily on the adjusting unit before the actual photographing operation. By adjusting the focus on the adjusting unit which is positioned at an equivalent location, the camera is pre-adjusted to the correct focus setting, eliminating the need to move the movable arm for focus adjustment and reducing overall procedure complexity
3Measurement precision
If multiple cameras are adjusted separately, then each camera can be individually optimized, but the adjustment time and process become lengthy
Solution Approach 1:
Multiple cameras are merged into a single adjusting operation by positioning multiple adjusting units at locations equivalent to their respective inspection target positions. All cameras can be adjusted simultaneously using the same principle and procedure, allowing individual optimization of each camera while maintaining the same reference point system, thereby significantly reducing total adjustment time and improving productivity
Data Source
AI summary
Provided is a camera focus adjustment jig (1) fixed to an inspection device and adjusting a focus of a camera (5), the inspection device including the camera (5) configured to photograph an automobile V, and a movable arm (3) to which the camera (5) is fixed via a fixing part (4) and configured to move the camera (5) to a photographing position where the automobile V is photographed. The camera focus adjustment jig (1) includes: a connection arm (6) connected to the fixing part (4); an adjusting unit (7) provided on the connection arm (6) and positioned, with respect to the camera (5), at a position equivalent to a position of the automobile V located at the photographing position; and display parts (9a, 9b) provided on a surface of the adjusting unit (7) facing the camera (5).