Optical Engine Module Noise Isolation via Elastic Sealing

Solution Overview

Problem

Projectors using monolithic digital light processing (DLP) with color wheel modules often suffer from the rainbow effect or color break-up, especially in high-speed moving images, and increasing the color wheel speed to mitigate this issue leads to noise generation that can affect the entire projector.

Innovation Solution

The optical engine module incorporates an elastic member sealingly disposed between the optical lens element and the casing, creating separate chambers to isolate noise and prevent its transmission to the projector's other components.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Object-affected harmful factors

If the color wheel module speed is increased to reduce the rainbow effect, then the color break-up phenomenon is improved, but noise is generated and transmitted to the entire projector

Engineering Contradiction:

Improverainbow effectVSAvoidnoise

Core Design Contradiction:

Object-affected harmful factorsVSObject-generated harmful factors

Solution Approach 1:

The projector housing is divided into multiple independent chambers using sound insulation partitions. The color wheel module is isolated in a dedicated chamber separated from the main projector body, allowing noise to be contained within the color wheel chamber while light passes through optical elements to reach the projection system.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Sound insulation partitions and elastic members are introduced as intermediary elements between the color wheel module and the projector housing. These partitions act as mediators that block noise transmission while allowing optical elements to transmit light, effectively decoupling the noise source from the projection path.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Illumination intensity

If the color wheel module speed is increased to improve color rendering, then full color effect is achieved, but noise transmission to the projector increases

Engineering Contradiction:

Improvecolor effectVSAvoidnoise

Core Design Contradiction:

Illumination intensityVSObject-generated harmful factors

Solution Approach 1:

The projector housing is divided into multiple independent chambers using sound insulation partitions. The color wheel module is isolated in a dedicated chamber separated from the main projector body, allowing noise to be contained within the color wheel chamber while light passes through optical elements to reach the projection system.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Sound insulation partitions and elastic members are introduced as intermediary elements between the color wheel module and the projector housing. These partitions act as mediators that block noise transmission while allowing optical elements to transmit light, effectively decoupling the noise source from the projection path.

Inventive Principle:

Principle #24Intermediary (Mediator)

Data Source

PatentUS20250076745A1Optical engine module and projector

Publication Date: 2025.03.06 CORETRONIC CORPORATION

AI summary

An optical engine module configured to receive an illumination beam includes a casing, a light uniforming element, an optical lens element, an elastic member, and a light valve. The casing has an accommodating space. The light uniforming element, the optical lens element, and the elastic member are disposed in the accommodating space. The optical lens element is disposed adjacent to a light exit end of the light uniforming element. The elastic member surrounds at least part of an outer periphery of the optical lens element. The elastic member is sealingly disposed in a gap between the optical lens element and the casing to separate the accommodating space into a first chamber and a second chamber, in which the light uniforming element is positioned in the first chamber. The illumination beam passes through the light uniforming element and the optical lens element sequentially and is transmitted to the light valve.