Dual-Sided Selective Mirroring Lens for 3D Visual Depth
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Solution Overview
Problem
Existing lenses for glasses provide only two-dimensional mirroring on one side, failing to deliver a three-dimensional or perspective effect.
Innovation Solution
A lens with selective mirroring on both sides is developed, featuring a three-dimensional or perspective effect, achieved through specific treatments on the convex and concave sides using pad printing and physical vapor deposition (PVD) with distinct layers and dichroic mirrors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If selective mirroring is applied only on one side of the lens, then the manufacturing process is simpler, but the visual effect remains two-dimensional and lacks depth
Solution Approach 1:
The patent applies selective mirroring treatment to both sides of the lens (front and back surfaces), transitioning from a conventional single-side treatment. This dual-side application creates a three-dimensional visual effect with depth perception, allowing the image to appear to emerge from the lens body rather than remaining flat on the surface.
Solution Approach 2:
The patent divides the lens into two distinct treatment zones: a first selective mirroring zone on the front surface and a second selective mirroring zone on the back surface. Each zone can be treated independently with different characteristics, allowing complex three-dimensional image effects to be constructed by combining segmented treatments.
2Shape
If selective mirroring is applied on both sides of the lens, then a three-dimensional or perspective image effect is achieved, but the manufacturing process becomes more complex
Solution Approach 1:
The patent employs pad printing as a preliminary step to apply a first layer of material (such as metal or pigment) to the front surface of the lens. This preliminary coating serves as a foundation for subsequent PVD treatment, enabling complex multi-layer structures to be built up systematically rather than requiring all layers to be applied in a single complex operation.
Solution Approach 2:
The patent uses pad printing as an intermediary technique between the lens manufacturing and final PVD mirroring treatment. The pad-printed layer acts as a preparatory coating that facilitates the subsequent physical vapor deposition process, making the application of complex multi-layer mirroring structures more controllable and repeatable.
3Manufacturing precision
If pad printing is applied before PVD treatment, then distinct layers can be formed for complex visual effects, but an additional manufacturing step is required
Solution Approach 1:
The patent combines pad printing and PVD treatment into an integrated manufacturing sequence where the pad-printed layer serves as a substrate for the PVD deposition. This merging of techniques allows precise control over layer thickness, composition, and optical properties while maintaining efficiency by eliminating the need for separate coating and deposition operations.
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 lens achieves a three-dimensional or perspective image effect by applying selective mirroring on both sides, enhancing visual appeal and providing a unique visual experience.
Implementation Method 1
carrying out a physical vapour deposition or PVD treatment on the concave side (30) of the lens (10)
Implementation Method 2
carrying out a physical vapour deposition or PVD treatment on the convex side (20) of the lens (10), which consists in the application of a dichroic mirror, of various colours (known in the art as mirroring)
Data Source
AI summary
The present invention relates to a lens (10) for selective mirroring glasses, said lens having a convex side (20) and a concave side (30) wherein said selective mirroring is realized both on the convex side (20) and on the concave side (30) of the lens (10), said realization of the selective mirroring both on the convex side (20) and on the concave side (30) of the lens (10) realizing an image (40) with three-dimensional or perspective effect on the lens (10) itself. The invention also relates to a method for obtaining a lens (10) for glasses with selective mirroring, said method envisaging the steps of: 1. preparation of the lens 10, 2. application of the pad printing on the convex side 20 of the lens, 3. drying of the paint applied in step 2, 4. application of the pad printing on the concave side 30 of the lens, 5. drying of the paint applied in step 4, 6. carrying out a physical vapour deposition or PVD treatment on the concave side 30 of the lens 10, 7. carrying out a physical vapour deposition or PVD treatment on the convex side 20 of the lens 10, 8. obtaining the final lens 10 subjected to the previous steps for the removal of the pad printing paint, said steps 2 and 4 being also able to be carried out in reverse, that is to say firstly step 4 and then, after step 3, step 2.