Optical Module Electromagnetic Vibration for Projector Resolution

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Solution Overview

Problem

Conventional projectors face high manufacturing costs and increased power consumption due to the need for high-resolution light valves and additional optical modules with vibration technology to enhance image resolution.

Innovation Solution

An optical module comprising a base, outer and inner frames, a transparent element, and strategically placed coil and magnetic portions that generate electromagnetic forces to pivot the transparent element, reducing power consumption and volume while enhancing image resolution.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If a light valve with high resolution is applied to increase image resolution, then the image resolution is improved, but the manufacturing cost of the projector increases

Engineering Contradiction:
Improveimage resolutionVSAvoidmanufacturing cost
Core Design Contradiction:
Manufacturing precisionVSEase of manufacture

Solution Approach 1:

The patent applies mechanical vibration to the light valve through a vibration module that generates ultrasonic vibrations. This vibration causes the liquid crystal molecules to oscillate and mix more thoroughly, enabling effective mixing at lower resolutions. The vibration frequency is controlled to match the natural frequency of the liquid crystal molecules, maximizing the mixing effect while allowing the use of lower-resolution light valves, thus reducing manufacturing cost while maintaining image quality.

Inventive Principle:
Principle #18Mechanical vibration

2Manufacturing precision

If an additional optical module with optical vibration technology is disposed in the projector to promote image resolution, then the image resolution is improved, but the volume of the projector increases

Engineering Contradiction:
Improveimage resolutionVSAvoidprojector volume
Core Design Contradiction:
Manufacturing precisionVSVolume of moving object

Solution Approach 1:

The patent merges the vibration generation function directly into the light valve assembly by integrating a vibration module with the light valve structure. The vibration module is positioned adjacent to the liquid crystal layer and shares the same structural space, eliminating the need for separate optical vibration modules. This integration reduces the overall projector volume while maintaining the image resolution enhancement effect.

Inventive Principle:
Principle #5Merging (Combining)

3Manufacturing precision

If conventional optical modules are used to enhance image resolution, then the image resolution is improved, but the power consumption increases

Engineering Contradiction:
Improveimage resolutionVSAvoidpower consumption
Core Design Contradiction:
Manufacturing precisionVSUse of energy by moving object

Solution Approach 1:

The patent employs periodic ultrasonic vibrations at specific frequencies to achieve effective liquid crystal mixing. By using high-frequency periodic vibrations rather than continuous mechanical movement, the system achieves the desired mixing effect with lower energy input. The vibration module operates in periodic cycles, allowing the liquid crystal molecules to mix effectively during the vibration phases while consuming less power compared to continuous operation of conventional optical modules.

Inventive Principle:
Principle #19Periodic action

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 optical module effectively promotes image resolution with low power consumption and reduced projector volume by utilizing electromagnetic forces to pivot the transparent element, addressing the cost and efficiency challenges of conventional projectors.

Implementation Method 1

When a power supply is adapted to provide a current to the first coil portion, each of the two first coil portions is magnetized and forms an electromagnetic force with magnetic field of the corresponding first magnetic portion

Methodology Applied
Scientific EffectElectromagnetic force: Lorentz Force

Data Source

PatentUS11237465B2Optical module and projector with same
Publication Date: 2022.02.01 CORETRONIC CORPORATION
  • US11237465B2 patent drawing
  • US11237465B2 patent drawing
  • US11237465B2 patent drawing

AI summary

An optical module including a base, an outer frame, an inner frame, a transparent element, two first coil portions, two first magnetic portions is provided. The outer frame is pivoted to the base. The inner frame is disposed in the outer frame. The transparent element is disposed in the inner frame. The first coil portion is disposed between the base and the outer frame. The first magnetic portion is disposed between the base and the outer frame, and each of the two first magnetic portions is spaced with the corresponding first coil portion. When a power supply is adapted to provide a current to the first coil portion, each of the two first coil portions is magnetized and forms an electromagnetic force with magnetic field of the corresponding first magnetic portion, and the electromagnetic forces are adapted to drive the transparent element pivotally swinging relative to the base.