Projection Apparatus Light Source Driving Circuit Miniaturization
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing projection apparatuses face challenges in miniaturization while maintaining high brightness, particularly due to the limitations of LED light sources and the need for a different driving scheme for laser sources, which increases manufacturing costs.
Innovation Solution
A projection apparatus with a light source driving circuit that provides a driving current to multiple groups of light sources in response to initial enable signals and a digital control signal, allowing LED or laser sources to emit light, thus increasing brightness while reducing apparatus size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If LED light sources are used in miniaturized projection apparatus, then the apparatus size is reduced, but the brightness is insufficient
Solution Approach 1:
The light source assembly is divided into multiple groups of light sources (first group, second group, third group) that can be independently controlled. This segmentation allows selective activation of different light source groups to achieve high brightness output while maintaining compact apparatus size, as not all light sources need to operate simultaneously at full power.
Solution Approach 2:
The patent implements dynamic control of light sources through initial enable signals and digital control signals that adjust the operating state of different light source groups based on display requirements. The light source driving circuit dynamically switches between different light source configurations to optimize both brightness and power consumption in real-time.
2Illumination intensity
If laser light sources are used to increase brightness, then the brightness is improved, but a different driving scheme is required increasing manufacturing cost
Solution Approach 1:
The light source driving circuit is designed with universal functionality to drive multiple types of light sources (LED and laser) using the same control architecture. The circuit responds to initial enable signals and digital control signals regardless of which light source type is activated, eliminating the need for separate driving schemes and reducing manufacturing complexity and cost.
Solution Approach 2:
The patent changes the operating parameters of light sources dynamically by adjusting the driving current through the light source driving circuit. By modifying current parameters rather than requiring different circuit architectures, the system can switch between LED and laser light sources without increasing manufacturing cost, as the same circuit handles different light source types with appropriate parameter adjustments.
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 increased brightness and miniaturization of the projection apparatus, supporting high display effects with reduced size and cost, particularly by effectively driving both LED and laser light sources.
Implementation Method 1
The miniaturized projection apparatus uses an LED light source to obtain a light beam
Implementation Method 2
the limitations of LED light sources and the need for a different driving scheme for laser sources
Implementation Method 3
the light valve is configured to modulate the light emitted by the light sources into image beams
Data Source
AI summary
A projection apparatus includes a light source driving circuit, a display control circuit, a main control circuit, and a light source assembly. The display control circuit is configured to transmit a first initial enable signal and a second initial enable signal to the light source driving circuit. The main control circuit is configured to transmit a digital control signal to the light source driving circuit. The light source assembly includes a plurality of groups of light sources. The light source driving circuit is configured to provide driving current to the plurality of groups of light sources in response to the first initial enable signal, the second initial enable signal and the digital control signal. Any group of the plurality of groups of light sources is configured to emit light under driving of the driving current. A size of the light valve is less than a size threshold.