Work Machine Lens Layout for Uniform Multi-LED Display
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Solution Overview
Problem
Conventional techniques require numerous individual lenses for work machines with multiple light emitting elements, leading to inefficiency and potential differences in lighting appearance due to varying light characteristics.
Innovation Solution
The configuration allows for two or more light emitting elements to be supported at different distances from a reference point, enabling them to be arranged relative to a common lens to minimize user discomfort from lighting differences.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If individual lenses are provided for each light emitting element, then lighting appearance consistency is maintained, but device complexity and manufacturing cost increase
Solution Approach 1:
The patent merges multiple light emitting elements (different colors) behind a single common lens. Instead of providing separate lenses for each LED, the invention positions multiple LEDs at different distances from the lens along its optical axis, allowing them to share the same lens while maintaining consistent lighting appearance through optimized spatial arrangement.
Solution Approach 2:
The patent applies local quality by positioning each light emitting element at a specific distance from the lens according to its characteristics. Each LED is placed at an optimized position (different object distances) to compensate for differences in light intensity and color, ensuring that the lighting appearance remains consistent across different colors while using a single lens.
2Ease of manufacture
If multiple light emitting elements are arranged at the same distance from the lens, then manufacturing is simplified, but lighting appearance differences occur due to varying light characteristics
Solution Approach 1:
The patent changes the parameter of object distance for each light emitting element relative to the lens. By adjusting the distance parameter differently for each LED based on its light characteristics (intensity, color), the invention achieves consistent lighting appearance. This parameter variation compensates for inherent differences in LED performance while maintaining a relatively simple manufacturing process.
3Productivity
If a common lens is shared among multiple light emitting elements, then manufacturing efficiency improves, but lighting appearance uniformity deteriorates
Solution Approach 1:
The invention merges multiple light emitting elements behind a single common lens, significantly improving manufacturing efficiency by reducing the number of optical components. This consolidation is achieved while maintaining lighting appearance uniformity through optimized positioning of each LED at different distances from the lens.
Solution Approach 2:
By positioning each light emitting element at a locally optimized distance from the common lens, the invention compensates for variations in light characteristics. This local adjustment ensures that despite using a shared lens, each LED produces consistent lighting appearance, thereby maintaining uniformity while improving productivity.
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 arrangement enables efficient information display by reducing the user's discomfort due to lighting differences, while also reducing the need for numerous lenses and improving manufacturing efficiency.
Implementation Method 1
The lens is configured to propagate light from a light emitting element supported inside the housing by the support structure to an outside of the housing
Data Source
AI summary
A work machine includes a housing, a support structure, and a lens. The support structure is capable of supporting, inside the housing, a first and a second light emitting element each of which emits light in a first direction. The lens is configured to propagate light from a light emitting element supported inside the housing by the support structure to an outside of the housing. The work machine is configured to display information by lighting using the lens. The support structure is capable of supporting the first and the second light emitting elements at respective positions where a first distance on an imaginary plane orthogonal to the first direction is different from a second distance on the imaginary plane. The first distance is between a reference point and the first light emitting element. The second distance is between the reference point and the second light emitting element.