Beam Projector Module Eye Safety Diffuser Integration
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Solution Overview
Problem
High-output lasers used in distance measuring devices and 3D depth cameras pose safety risks due to direct irradiation, and existing diffuser-based intensity control methods fail to ensure eye safety when detached, leading to potential damage or blindness.
Innovation Solution
A beam projector module with a new structure featuring a cathode conductive pad, a non-conductive frame, a light source, a diffuser, and a processor that senses reflected light to adjust power supply and detect diffuser position, ensuring eye safety and reducing manufacturing costs and power loss.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a diffuser is used to control light intensity, then eye safety is improved, but the device complexity increases and manufacturing cost increases
Solution Approach 1:
The patent extracts the diffuser from being a separate detachable component and integrates it into the housing structure. The diffuser is positioned within the housing to diffuse light before it exits the device, eliminating the need for separate diffuser attachments while maintaining eye safety functionality.
Solution Approach 2:
The patent merges the diffuser with the housing structure, combining two previously separate elements (diffuser and housing) into a single integrated component. This reduces device complexity by eliminating separate parts while maintaining the light diffusion function for eye safety.
2Object-affected harmful factors
If a diffuser is used to control light intensity, then eye safety is improved, but manufacturing cost increases
Solution Approach 1:
The diffuser is integrated into the housing structure, combining manufacturing steps and reducing the number of separate components that need to be produced and assembled. This integration reduces manufacturing cost while maintaining eye safety functionality.
Solution Approach 2:
The patent extracts the diffuser function from being a separate purchasable component and embeds it into the housing manufacturing process, potentially allowing the diffuser to be formed as part of the housing mold or as an integrated element, thereby reducing overall manufacturing cost.
3Device complexity
If the diffuser is detached, then device simplicity is improved, but eye safety deteriorates due to high-output light beam
Solution Approach 1:
The patent extracts the diffuser from being a detachable component and makes it an integral part of the housing structure, eliminating the possibility of detachment while ensuring continuous eye safety protection is maintained during device operation.
Solution Approach 2:
By merging the diffuser with the housing, the patent ensures that the diffuser cannot be detached separately, maintaining eye safety continuously. The integrated design ensures the diffuser remains in place during normal device operation, preventing direct exposure to high-output light beams.
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 module provides an eye-safety function by controlling light intensity, reducing manufacturing costs, and minimizing power consumption while maintaining efficient light output, and it can detect laser malfunctions and changes in diffuser position for continuous safety and performance monitoring.
Implementation Method 1
The diffuser diffuses a collimated light beam into a certain field of view, as required by the system, by using the effect of refraction and diffraction based on properties of light
Implementation Method 2
The diffuser diffuses a collimated light beam into a certain field of view, as required by the system, by using the effect of refraction and diffraction based on properties of light
Implementation Method 3
a light source which generates light when electrical power is supplied to a laser diode
Data Source
AI summary
The present disclosure provides a beam projector module including: a PCB on which a cathode wire and an anode wire are positioned; a conductive pad that is made of a conductive material or coated with a conductive material and has one side surface; a first frame that is made of a non-conductive material and has one side surface which is in contact with the PCB; a light source having a cathode electrode and an anode electrode, the cathode electrode being in contact with the other side surface of the conductive pad; the anode electrode being connected to the anode wire through at least one electric wire passing through the opening; a diffuser configured to diffuse a light beam output from the light source; and a second frame configured to support the diffuser so that the diffuser is spaced from the light source by a predetermined distance.