Switchable Projector Module for Spot and Flood Projection
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Solution Overview
Problem
Current projectors requiring both spot and flood functions occupy more space and have increased manufacturing costs due to the need for two separate modules and complex assembly processes.
Innovation Solution
A switchable projector module is designed with a holder integrating a projector and a switchable diffuser, allowing the module to switch between spot and flood modes, reducing footprint and simplifying assembly by using a single module with a diffraction optical element and adhesive bonding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If two separate modules (spot projection module and flood projection module) are assembled together to provide dual functions, then both spot and flood functions are achieved, but the footprint of the projector increases and the device cannot be effectively miniaturized
Solution Approach 1:
The patent combines the spot projection module and flood projection module into a single integrated projector module. The holder integrates both a projector (for spot function) and a switchable diffuser (for flood function) into one unified structure, allowing dual functionality while reducing the overall footprint and eliminating the need for separate modules.
Solution Approach 2:
The switchable diffuser enables the single projector module to perform multiple functions. By switching between a first mode (non-diffuse) and a second mode (diffuse), the same optical path can produce both spot projection and flood projection effects, making the module universal for both applications.
2Adaptability or versatility
If two separate modules are assembled together, then dual functions are provided, but the fabrication and assembly become complicated resulting in increased manufacturing costs
Solution Approach 1:
The holder integrates both the projector and switchable diffuser into a single assembled unit with a unified structure. This merging eliminates the need for separate fabrication and assembly processes for two independent modules, simplifying manufacturing and reducing costs while maintaining dual functionality.
3Adaptability or versatility
If two separate modules are assembled together, then dual functions are provided, but the device requires two contacts for driving increasing device complexity
Solution Approach 1:
The switchable diffuser allows a single projector to perform both spot and flood functions by switching between two modes. This eliminates the need for two separate projectors and their associated driving contacts, reducing device complexity while maintaining the ability to provide both projection modes.
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 solution enables a compact, dual-function projector module with reduced footprint and simplified assembly, achieving cost savings and improved manufacturing efficiency.
Implementation Method 1
a diffraction optical element disposed in the first connection tank... The light beam passes through the diffraction optical element to generate the pattern image
Implementation Method 2
The switchable diffuser is configured to switch between a first mode and a second mode, so as not to diffuse the pattern image in the first mode and diffuse the pattern image in the second mode
Implementation Method 3
a connection portion of the projector is bonded to a bonding surface of the bonding wall through an adhesive
Data Source
AI summary
A switchable projector module includes a holder, a projector, and a switchable diffuser. The holder includes a first connection tank and a second connection tank, in which the second connection tank is located at a side of the first connection tank. The second connection tank has a spilling glue trench. The projector is engaged with the first connection tank and is configured to project a pattern image onto the second connection tank. The switchable diffuser is engaged with the second connection tank. The switchable diffuser is configured to switch between a first mode and a second mode, so as not to diffuse the pattern image in the first mode and diffuse the pattern image in the second mode.