Oblique Light Source Projection System for Long Range Clarity
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Solution Overview
Problem
Existing systems for projecting visual indications from a remote location require high power consumption and result in a limited field of view and unclear images, making them impractical for use over a wide range of distances.
Innovation Solution
A projection system comprising a lens with an optically powered surface and a light source positioned obliquely relative to the lens, allowing for a longer depth-of-field and brighter indications by applying the Scheimpflug rule to extend the focal region, ensuring the projected indication remains in focus.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If visual indications are projected from a remote location, then the indicators do not obstruct the performance of necessary tasks, but the power consumption increases and the field of view becomes limited
Solution Approach 1:
The patent applies the Scheimpflug rule by tilting the light source plane relative to the lens plane, creating a non-parallel geometric relationship that extends the depth of field. This dimensional reorientation allows the focal plane to cover a larger spatial range, enabling clear projections at multiple distances without requiring high power consumption.
2Ease of operation
If visual indications are projected from a remote location, then the indicators do not obstruct the performance of necessary tasks, but the image clarity decreases
Solution Approach 1:
By tilting the light source plane obliquely relative to the lens plane, the patent creates an extended depth of field that maintains image clarity across multiple distances. This geometric transformation allows the focal plane to encompass a broader range, ensuring sharp projections without the need for precise focusing at each distance point.
3Adaptability or versatility
If known projection techniques are used, then visual indications can be displayed, but the field of view is limited and images are unclear
Solution Approach 1:
The patent tilts the light source plane relative to the lens plane, creating a Scheimpflug configuration that extends the depth of field. This dimensional reorientation expands the effective field of view, allowing clear projections across a broader spatial area and enabling versatile visual indication display without the limitations of conventional parallel configurations.
4Illumination intensity
If projection systems use high power consumption, then brighter indications can be achieved, but the system efficiency decreases
Solution Approach 1:
By applying the Scheimpflug rule with a tilted light source plane, the patent extends the depth of field to cover a long range of distances. This allows the projection system to operate at very low f-numbers, achieving high efficiency and bright indications simultaneously by optimizing the geometric relationship between the light source and lens rather than relying on high power consumption.
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 system achieves high efficiency and clear visual indications over a long range with low power consumption, enhancing the visibility and clarity of projected information for workers performing tasks.
Implementation Method 1
a lens including an optically powered surface, the lens defining an optical center and a lens axis
Implementation Method 2
Desired characteristics, such as the position of the plane of focus, may be achieved through unique application of the Scheimpflug rule to a visual indication system, which includes lens focal length and distances of the nearest and farthest points of the tilted light source from the projection lens
Data Source
AI summary
A projection system includes a light source and a lens. The light source includes a first light and a second light that both are positioned within a light source plane. The lens defines a principal axis and a lens plane that is normal to the principal axis. The light source is positioned relative to the lens such that the light source plane is oblique to the lens plane. The orientation of the light source relative to the lens enables the projection system to deliver information to a worker performing a task about the task being performed from a remote location that is outside of the area in which the worker is performing the task.