Projection Device Complementary Drive Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing projection devices and electronic cameras face challenges in reducing electrical power consumption during operation, particularly when driving components while the light source is illuminated, leading to inefficiencies and increased energy usage.
Innovation Solution
The implementation of a projection device and electronic device design that includes a light source, modulation element, projection optical system, drive unit, and control unit, where the control unit drives the light source and drive unit in a complementary manner, with pulsed operation at a frequency of greater than or equal to 50 Hz, and supplies pulsed electrical current to the modulation element and drive unit, optimizing energy usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the light source is turned on continuously while driving the drive unit, then the projection device can maintain stable operation, but electrical power consumption increases
Solution Approach 1:
The patent applies periodic action by controlling both the light source and drive unit to operate in pulsed cycles rather than continuously. The control unit synchronizes the light source pulsing with the drive unit pulsing at frequencies of 50 Hz or higher, creating periodic on-off cycles that reduce overall power consumption while maintaining functional stability through sufficient update rates
2Use of energy by moving object
If the light source is pulsed on and off frequently, then electrical power consumption is reduced, but the projection device may experience instability in operation
Solution Approach 1:
The patent resolves this contradiction by establishing a periodic action regime where both the light source and drive unit are pulsed at frequencies of 50 Hz or higher. This frequency threshold ensures that the pulsing occurs fast enough to maintain stable projection operation while still achieving significant power consumption reduction compared to continuous operation
Solution Approach 2:
The patent merges the control of the light source and drive unit into a synchronized operation. The control unit coordinates both components to pulse simultaneously or in complementary patterns, ensuring that their combined periodic action maintains system stability while achieving power savings that would be difficult to realize with independent control
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
This design effectively suppresses electrical power consumption during operation by synchronizing the light source and drive unit operations, reducing energy wastage and extending battery life in portable devices.
Implementation Method 1
a light source; a modulation element that modulates light from the light source
Implementation Method 2
the control unit supplies a pulsed electrical current to the modulation element synchronized with a pulsed electrical current supplied to the light source
Data Source
AI summary
A projection device includes: a light source; a modulation element that modulates light from the light source; a projection optical system that projects light modulated by the modulation element; a drive unit that drives the projection optical system; and a control unit that drives the light source and the drive unit in a complementary manner when driving the drive unit while turning on the light source.