Infrared-Neutral Holder Inner Surface for Handheld Device
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Solution Overview
Problem
Conventional holders for handheld electronic devices can inadvertently activate infrared-sensitive components due to interaction with the holder's inner surface, leading to undesirable activation of navigation functions or rendering the device passive, as they often fail to effectively neutralize infrared signals.
Innovation Solution
The holder incorporates an infrared-neutral material or coating on its inner surface, which absorbs or reflects infrared light to prevent activation of the device's infrared-sensitive components, ensuring the device remains inactive when stored.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a fabric inner surface is used in the holder to avoid damage to the device, then the device is protected from scratches, but the fabric surface interacts with and activates infrared-sensitive components of the device
Solution Approach 1:
The holder inner surface is divided into different zones with different properties: a soft protective layer (fabric, rubber, or plastic) that contacts the device to prevent scratches, and an infrared-neutral layer (metallic or non-metallic coating) that prevents infrared activation. This local differentiation allows each zone to fulfill its specific function without interfering with the other.
Solution Approach 2:
The holder inner surface uses a composite structure combining materials with different properties: a soft protective material (such as fabric, rubber, or plastic) layered with or combined to an infrared-neutral material (such as metallic coating, non-metallic coating, or foam). This composite approach simultaneously achieves scratch protection and infrared signal neutralization.
2Reliability
If the device is rendered passive or placed into sleep mode when placed inside a holder, then activation is prevented, but there is a short period of time before sleep mode activation during which unintentional activation may occur
Solution Approach 1:
The holder's infrared-neutral inner surface proactively prevents infrared signal reflection before the device can be activated, eliminating the need to wait for sleep mode to engage. This preliminary protective action occurs immediately upon insertion, blocking the harmful infrared interaction at its source rather than reacting to activation after it begins.
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 solution effectively prevents unintended activation of infrared-sensitive components by ensuring that the reflected infrared signal is outside the operative range, maintaining the device in an inactive state while stored, thus reducing accidental navigation or function activation.
Implementation Method 1
The holder incorporates an infrared-neutral material or coating on its inner surface, which absorbs or reflects infrared light to prevent activation of the device's infrared-sensitive components
Implementation Method 2
The holder incorporates an infrared-neutral material or coating on its inner surface, which absorbs or reflects infrared light to prevent activation of the device's infrared-sensitive components
Data Source
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AI summary
A holder for a handheld electronic device, the holder including a container defining a space for receiving the handheld electronic device and an inner surface facing inwardly towards the space. At least a portion of the inner surface includes an infrared-neutral material or coating operative for interacting with infrared light emitted from the handheld electronic device and received by the infrared-neutral material. The interaction is such that, while the handheld electronic device is being received by the container, any reflected infrared signal effected by the interaction is inoperative for effecting activation of a functionality of the handheld electronic device when the reflected infrared signal is sensed by the handheld electronic device.