Curved Multi-View Luminance Measuring Device
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Solution Overview
Problem
Measuring luminance for each viewpoint in autostereoscopic display devices is time-consuming as the number of viewpoints increases, due to crosstalk issues where each viewpoint partially overlaps with adjacent viewpoints.
Innovation Solution
A multi-view luminance measuring device with a base substrate having a curved side, a plurality of lenses positioned on the substrate, and corresponding optical sensors, where the curvature is set to maintain a constant distance between lenses and a target point, allowing for efficient measurement of luminance across multiple viewpoints.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the number of viewpoints increases to provide better stereoscopic effect, then the stereoscopic image quality is improved, but the measurement time increases significantly
Solution Approach 1:
The measurement system is segmented into multiple optical sensors positioned at different viewpoints simultaneously. Each optical sensor measures luminance at a specific viewpoint at the same time, rather than sequentially measuring one viewpoint at a time. This parallel measurement approach divides the measurement task across multiple sensors, reducing total measurement time while maintaining accuracy for each viewpoint.
Solution Approach 2:
The invention transitions from one-dimensional sequential measurement (one viewpoint at a time) to two-dimensional simultaneous measurement (multiple viewpoints at once). By arranging optical sensors across a curved surface that matches the display's viewing geometry, the system captures luminance data across multiple viewpoints in parallel, effectively adding a spatial dimension to the measurement process.
2Adaptability or versatility
If multiple lenses are used to cover multiple viewpoints, then the viewing angle coverage is improved, but the device complexity increases
Solution Approach 1:
The curved base substrate serves multiple functions simultaneously: it provides structural support, defines the geometric relationship between lenses and sensors, maintains constant optical path lengths, and enables the entire assembly to be positioned at different measurement points. This multi-functional design reduces the need for additional components while achieving comprehensive viewpoint coverage.
Solution Approach 2:
The base substrate is curved to match the natural viewing geometry of the display device. This curvature allows lenses and optical sensors to be positioned at constant distances from the display surface across different viewpoints, maintaining optical accuracy while covering a wide viewing angle range. The curved geometry naturally accommodates multiple measurement points without requiring complex adjustment mechanisms.
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 device enables rapid generation of a luminance profile for a target point by positioning lenses at predetermined measurement points, significantly reducing measurement time while maintaining accuracy across multiple viewpoints.
Implementation Method 1
a plurality of lenses positioned on an inner surface of the base substrate
Data Source
AI summary
A multi-view luminance measuring device includes: a base substrate having a long side extending in a first direction and a short side extending in a second direction, wherein the long side is curved with a first curvature; a plurality of lenses positioned on an inner surface of the base substrate; and a plurality of optical sensors positioned on the base substrate to respectively correspond to the plurality of lenses, wherein the first curvature is set such that a distance between each of the plurality of lenses and a target point is constant, and wherein a length of the long side of the base substrate is set to cover a viewing angle with reference to the target point.