Rotatable Lens Rings for Light Angle Adjustment Without Flux Loss
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Solution Overview
Problem
Existing methods for adjusting light emitting angles in high bay lights result in a loss of light flux due to changes in focal length or requiring a two-layer optical structure.
Innovation Solution
A lens capable of rotatably adjusting light emitting angles with a single-layer optical structure, featuring alternating first and second lens portions with different angles, and a lens body that can be rotated to adjust light paths without altering focal length.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the distance between lens and light source is changed to adjust focal length, then light emitting angle is adjusted, but optical efficiency is changed and light flux is lost
Solution Approach 1:
The patent makes the lens rotatable around the optical axis, transforming a static lens into a dynamic one. By rotating the lens to different angular positions, the light emitting angle is adjusted without changing the lens-to-light-source distance or focal length, thereby maintaining optical efficiency and avoiding light flux loss.
Solution Approach 2:
The patent changes the angular orientation parameter of the lens rather than the focal length parameter. Each lens ring contains lens portions with different light emitting angles (e.g., 60 degrees and 120 degrees), and rotating the lens selects which angle is active, adjusting the light emitting angle while preserving optical efficiency.
2Adaptability or versatility
If two-layer lens structure is used to adjust light path, then light emitting angle is adjusted, but device complexity increases and light flux loss occurs
Solution Approach 1:
The patent divides the lens into multiple lens rings, with each ring containing lens portions of different light emitting angles. This segmentation allows angular adjustment within a single-layer structure, eliminating the need for complex two-layer lens systems while maintaining adaptability.
Solution Approach 2:
The patent introduces rotational movement to a single-layer lens structure, making it dynamic. By rotating the lens body, different lens portions are positioned to receive light from the light source, enabling light path adjustment without adding structural complexity.
3Adaptability or versatility
If two-layer lens structure is used to adjust light path, then light emitting angle is adjusted, but light flux loss increases
Solution Approach 1:
The patent uses rotational movement of a single-layer lens to adjust light paths, avoiding the need for multiple static lens layers. This dynamic approach maintains a shorter and more direct light path from source to output, reducing reflections and refractions that cause light flux loss in multi-layer structures.
Solution Approach 2:
The patent combines multiple light emitting angle functions into a single lens structure by incorporating lens portions with different angles in the same lens ring. This merging eliminates the need for separate lens layers, reducing optical interfaces and minimizing light flux loss.
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
Enables continuous, lossless adjustment of light emitting angles by rotating the lens body, maintaining light flux without the need for additional optical layers.
Implementation Method 1
each lens ring includes a plurality of first lens portions and a plurality of second lens portions, which are alternatively arranged and have different light emitting angles
Data Source
AI summary
A lens capable of rotatably adjusting a light emitting angle is disclosed, and the lens includes a lens body, where the lens body is provided with a plurality of lens rings in an equal spacing manner from inside to outside; each lens ring includes a plurality of first lens portions and a plurality of second lens portions, which are alternatively arranged and have different light emitting angles; and the first lens portions and the second lens portions on two adjacent lens rings are staggered. An optical system capable of rotatably adjusting a light emitting angle and an implementation method for the optical system capable of rotatably adjusting a light emitting angle are further disclosed. The lens body is matched with a light source plate.