Laser Light Source Module Verification Switch

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Solution Overview

Problem

Laser light source modules lack a safe protection mechanism, risking eye damage when detached and potentially powered externally, as there is no mechanism to prevent emission of laser beams.

Innovation Solution

Incorporating a verification unit and controlled switch within the laser light source module that requires a verification signal to enable power transmission to the laser source, ensuring the module remains off unless properly assembled and powered, thereby preventing accidental laser emission.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of repair

If the laser light source module is made detachable for easy replacement, then the ease of repair is improved, but the safety is worsened due to lack of protection mechanism when detached

Engineering Contradiction:

Improveease of replacementVSAvoideye damage risk

Core Design Contradiction:

Ease of repairVSObject-affected harmful factors

Solution Approach 1:

A controlled switch unit is introduced as an intermediary component between the power input and the laser source. This switch unit includes a control terminal that receives verification signals and a conducting terminal that controls power transmission. The switch acts as a mediator that only allows power to reach the laser source when proper verification is completed, thus preventing accidental emission while maintaining detachability for easy replacement.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The system performs preliminary verification action before enabling the laser source. A verification unit checks whether a valid verification signal is received at the control terminal before the controlled switch unit allows power transmission to the laser source. This preliminary check ensures that the module is properly assembled and authenticated before the laser can emit light, preventing safety hazards from detached or unauthorized modules.

Inventive Principle:

Principle #10Preliminary action

2Device complexity

If no protection mechanism is provided when detached, then the device complexity is reduced, but the reliability is worsened due to potential unauthorized operation

Engineering Contradiction:

Improveprotection mechanismVSAvoidsafe operation

Core Design Contradiction:

Device complexityVSReliability

Solution Approach 1:

The protection mechanism is segmented into distinct functional units: a verification unit that checks authentication signals, a controlled switch unit with separate control and conducting terminals, and a laser source unit. This segmentation allows each component to perform its specific function independently while working together to ensure safety. The modular structure adds protection without requiring complete system redesign, balancing complexity and reliability.

Inventive Principle:

Principle #1Segmentation

Data Source

PatentUS8982919B2Laser light source module, laser apparatus and lighting method therefor

Publication Date: 2015.03.17 DELTA ELECTRONICS INC(CN)

AI summary

A laser light source module includes a laser source, a connecting unit, a controlled switch unit, and a verification unit. When a verification signal is received, the verification unit judges whether the verification signal complies with a verifying condition. If the verification signal complies with the verifying condition, the controlled switch unit is in the on state, so that a first output voltage is transmitted to the laser source through the controlled switch unit to drive illumination of the laser source. Whereas, if the verification signal does not comply with the verifying condition, the controlled switch unit is in the off state, so that the first output voltage fails to be transmitted to the laser source through the controlled switch unit and the laser source is turned off.