Cosmetic Compact Lid With Switchable Mirror Transparency

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Solution Overview

Problem

Existing cosmetic compacts with transparent windows or bases require separate mirrors, which are not integrated with the transparent elements, and those with transparent pans often use less desirable materials like plastic instead of metal.

Innovation Solution

A cosmetic compact with a base, insert, and lid that includes a lighting circuit, one-way mirror, and optionally a variable transparency film, allowing controlled visibility of contents through a hinged lid that integrates a mirror and lighting elements for enhanced usability and aesthetic appeal.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Loss of information

If a transparent window or base is used to view cosmetic contents, then visibility of product is improved, but a separate mirror must be supplied which increases device complexity

Engineering Contradiction:
Improvevisibility of cosmetic contentsVSAvoidseparate mirror component
Core Design Contradiction:
Loss of informationVSDevice complexity

Solution Approach 1:

The patent combines the mirror function and transparent window function into a single integrated component. The lid contains both a transparent portion for viewing contents and a mirror portion for application, eliminating the need for separate mirror and window elements. This integration directly resolves the technical contradiction by maintaining visibility while reducing device complexity.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The lid is designed to perform multiple functions: it provides structural closure, enables product visibility through its transparent portion, and provides a reflection surface through its mirror portion. This multi-functionality allows a single component to replace what would traditionally require multiple separate elements, thereby reducing overall device complexity while maintaining visibility capabilities.

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

2Loss of information

If a see-through base with transparent pan is used, then product visibility is improved, but material options are limited to plastic where metal pans are often preferred

Engineering Contradiction:
Improveproduct visibilityVSAvoidmaterial selection flexibility
Core Design Contradiction:
Loss of informationVSAdaptability or versatility

Solution Approach 1:

The base is divided into two distinct components: an opaque metal pan for holding the cosmetic product and a separate transparent insert for displaying the product. This segmentation allows each component to be made from optimal materials - the metal pan provides durability and preferred aesthetic qualities, while the transparent insert enables product visibility without compromising the metal pan's material properties.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The transparent insert is placed within or over the metal pan, creating a nested arrangement where the transparent element sits inside or on top of the metal container. This nesting configuration allows the metal pan to maintain its structural and aesthetic advantages while the transparent insert provides the necessary visibility function, thus preserving material versatility.

Inventive Principle:
Principle #7Nested doll (Nesting)

3Loss of information

If lighting elements are added to illuminate cosmetic contents, then visibility and aesthetic appeal are improved, but device complexity and energy consumption increase

Engineering Contradiction:
Improvevisibility of cosmetic contentsVSAvoidlighting circuit integration
Core Design Contradiction:
Loss of informationVSDevice complexity

Solution Approach 1:

The lighting elements are integrated directly into the lid structure, merging the illumination function with the existing transparent and mirror portions. The lighting circuit is incorporated within the lid's construction, allowing the light to shine through the transparent portion and reflect off the mirror portion without requiring separate external lighting components, thereby managing device complexity through integration.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The lid is enhanced to provide multiple functions simultaneously: structural closure, product visibility through transparent portions, reflection through mirror portions, and illumination through integrated lighting elements. This multi-functionality allows a single component to handle visibility and aesthetic enhancement needs, including lighting, without proportionally increasing device complexity.

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

4Loss of information

If a one-way mirror is used on the lid, then aesthetic appeal and controlled visibility are improved, but manufacturing precision requirements increase

Engineering Contradiction:
Improvecontrolled visibilityVSAvoidone-way mirror integration
Core Design Contradiction:
Loss of informationVSManufacturing precision

Solution Approach 1:

The one-way mirror is integrated as part of the lid's transparent portion, combining the reflective and transparent properties in a single manufactured element. This integration approach allows the one-way mirror functionality to be built into the lid during manufacturing rather than requiring separate assembly steps, thereby managing manufacturing precision requirements through unified production.

Inventive Principle:
Principle #5Merging (Combining)

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 integrated mirror functionality with controlled visibility of cosmetic contents, providing user convenience and aesthetic flexibility by allowing the compact to switch between reflective and transparent states based on lighting conditions.

Implementation Method 1

A cosmetic compact with a base, insert, and lid that includes a lighting circuit, one-way mirror, and optionally a variable transparency film, allowing controlled visibility of contents

Methodology Applied
Scientific EffectElectro-optic effect: Electro-Optic Effects

Implementation Method 2

A cosmetic compact with a base, insert, and lid that includes a lighting circuit

Methodology Applied
Scientific EffectElectroluminescence: Electroluminescence

Implementation Method 3

one-way mirror

Methodology Applied
Scientific EffectReflection: Reflection

Data Source

PatentEP4185156B1Cosmetic container comprising a surface with controllable transparency
Publication Date: 2025.09.03 ELC MANAGEMENT LLC
  • EP4185156B1 patent drawingFigure 1
  • EP4185156B1 patent drawingFigure 2
  • EP4185156B1 patent drawingFigure 3

AI summary

A cosmetic container, such as a compact, that comprises a lid hingedly connected to a base, and a lighting circuit. Some embodiments of the invention comprises a one-way mirror, while others comprise a variable transparency film. Preferred embodiments, however, comprise both a one-way mirror and a variable transparency film that work cooperatively to provide a lid that is see through when viewed from the outside, and reflective when viewed from the inside.