Projector Light Diffuser Switching for Illumination and Projection
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Solution Overview
Problem
Projectors with illuminator functions are perceived as cumbersome due to the added functionality, and existing technologies do not effectively address the need for seamless switching between projection and illumination modes.
Innovation Solution
A projector design incorporating a power receiving terminal, a light source, a light diffuser that adjusts light diffusion, and a light diffusion controller, which alternates between diffusion and non-diffusion states based on power supply and content reproduction triggers, allowing selective operation as an illuminator or projector.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a projector is designed with an illuminator function, then the device becomes more versatile, but the operation becomes more cumbersome
Solution Approach 1:
The system automatically determines whether to function as a projector or illuminator based on external trigger conditions (power supply status, content reproduction completion) without requiring manual user input, thereby maintaining versatility while simplifying operation
Solution Approach 2:
The light diffuser's optical properties are dynamically changed between diffused and non-diffused states based on operational mode, allowing the same hardware to serve dual functions efficiently
2Illumination intensity
If the light diffuser constantly diffuses light to enable illuminator function, then illumination capability is improved, but projection quality deteriorates
Solution Approach 1:
The light diffuser is designed to dynamically change its optical state between diffused and non-diffused modes based on the operational requirements, allowing optimal performance for both projection and illumination functions
Solution Approach 2:
The optical parameters of the light diffuser are changed between two distinct states (diffused/non-diffused) to match the required function, ensuring high projection quality when needed and good illumination capability when needed
3Measurement precision
If the projector requires manual switching between projection and illumination modes, then function selection precision is improved, but ease of operation deteriorates
Solution Approach 1:
The system automatically selects the appropriate operational mode (projector or illuminator) based on predetermined trigger conditions such as power supply status and content reproduction completion, eliminating the need for manual user intervention
Solution Approach 2:
The system monitors operational status (power supply, content reproduction) and uses this feedback to automatically determine and switch between projection and illumination modes, ensuring accurate function selection without manual input
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
Enables convenient and efficient switching between projection and illumination modes, enhancing user experience by providing a versatile device that can perform either function based on power supply status and content reproduction completion.
Implementation Method 1
the light diffuser includes a PDLC device
Implementation Method 2
a light diffuser that adjusts the degree of diffusion of light from the light source
Data Source
AI summary
A projector includes a power receiving terminal, a light source that emits light based on electric power supplied to the power receiving terminal, a light diffuser that adjusts the degree of diffusion of the light from the light source, a specifying section that alternately specifies one of illumination projection and image projection every time electric power supply to the power receiving terminal is started, and a light diffusion controller that controls the light diffuser so that when the specifying section specifies the illumination projection, the light diffuser diffuses the light from the light source, whereas when the specifying section specifies the image projection, the light diffuser transmits the light without substantially diffusing the light.