Manual Frost Filter Toggle for Softer Luminaire Beam Edges

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Solution Overview

Problem

Existing luminaires lack a convenient and efficient mechanism for manually controlling the addition of a frosted effect to the beam, which is essential for achieving visually softer beam edges.

Innovation Solution

A frost filter mechanism is mechanically coupled to a lens group and operated via a toggle control to move between positions within the light beam, allowing manual control over the frosted effect by rotating the toggle in specific directions.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Illumination intensity

If a manual frost control mechanism is added to enable frosted effect, then the visual softness of beam edges is improved, but the device complexity increases

Engineering Contradiction:
Improvevisual softness of beam edgesVSAvoidmechanism complexity
Core Design Contradiction:
Illumination intensityVSDevice complexity

Solution Approach 1:

The frost filter is extracted as a separate, independently controllable element from the lens group. The toggle control specifically operates the frost filter without requiring operation of other optical components, allowing the frosted effect to be added or removed independently while maintaining simple control.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The optical control system is segmented into independent control mechanisms: the lens group has its own control, and the frost filter has a separate toggle control. This segmentation allows each component to be operated independently, achieving the desired visual effect without requiring complex integrated control systems.

Inventive Principle:
Principle #1Segmentation

2Productivity

If a frost filter mechanism is integrated with the lens group, then the operational efficiency is improved, but the device complexity increases

Engineering Contradiction:
Improveoperational efficiencyVSAvoidmechanism complexity
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The frost filter mechanism is mechanically integrated with the lens group assembly, allowing both components to move together as a unit along the optical axis. This merging improves operational efficiency by coordinating the movement of multiple optical elements simultaneously, while the shared mechanical structure prevents a proportional increase in overall complexity.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The mechanical coupling between the frost filter and lens group serves multiple functions: it enables coordinated movement of both components, maintains proper optical alignment, and allows the frost filter to be positioned at different locations along the optical path. This multi-functionality achieves operational efficiency without requiring separate control mechanisms for each function.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Data Source

PatentUS20260078891A1Manual Frost Mechanism
Publication Date: 2026.03.19 ROBE LIGHTING SRO
  • US20260078891A1 patent drawing
  • US20260078891A1 patent drawing
  • US20260078891A1 patent drawing

AI summary

A luminaire includes a light source that emits a light beam and a frost filter mechanism that is mechanically coupled to a lens group of the luminaire and configured to move with the lens group along an optical axis of the light beam. The frost filter mechanism includes a frost filter configured to be moved from a first position outside of the light beam to a second position in the light beam. The frost filter mechanism also includes a toggle control coupled to the frost filter, where the toggle control is configured to rotate the frost filter from the first position to the second position when the toggle control is rotated in a first direction and to rotate the frost filter from the second position to the first position when the toggle control is rotated in a second direction.