Laser Projection Lens Access for Color Deviation Adjustment

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Solution Overview

Problem

Laser projection devices suffer from color deviation due to the difficulty in adjusting lenses within the limited space, leading to poor display effects and inefficient factory inspection and maintenance.

Innovation Solution

A light source system with a housing, laser device, and adjustment assembly that allows direct lens adjustment through an exposed assembly opening, enabling precise posture and position adjustments without disassembly, and incorporating a polarization conversion component to align polarization modes, reducing interference and speckle generation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If lenses are adjusted within the housing without external access, then the structural integrity is maintained, but the adjustment efficiency and ease of operation deteriorate

Engineering Contradiction:
Improvelens adjustment efficiencyVSAvoidhousing structure complexity
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The housing is segmented into a main body and a detachable end cover. The end cover can be removed to provide access to the adjustment assembly and lenses, while the main body remains intact. This segmentation allows easy adjustment of lenses without compromising the overall structural integrity when the cover is in place.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The end cover is extracted as a separate detachable component from the housing. This extraction creates an assembly opening that provides direct access to the adjustment assembly and lenses, enabling efficient adjustment operations without disassembling the entire housing structure.

Inventive Principle:
Principle #2Taking out (Extraction)

2Ease of repair

If the end cover is made detachable to allow adjustment access, then the ease of repair and maintenance is improved, but the structural integrity and protection of internal components deteriorates

Engineering Contradiction:
Improvemaintenance accessibilityVSAvoidprotection of internal components
Core Design Contradiction:
Ease of repairVSReliability

Solution Approach 1:

The housing is divided into a protective main body and a detachable end cover. The end cover serves as a protective closure that can be removed for maintenance and reattached to restore protection. This segmentation enables both easy access for repair and reliable protection when assembled.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The end cover is pre-designed with connection structures that align with the housing to ensure proper reattachment after maintenance. This preliminary design of connection interfaces guarantees that the protective function is restored reliably after the cover is removed and reinstalled.

Inventive Principle:
Principle #10Preliminary action

3Productivity

If multiple lenses are adjusted simultaneously through a single access point, then the productivity is improved, but the precision of individual lens adjustment deteriorates

Engineering Contradiction:
Improveadjustment speedVSAvoidlens alignment accuracy
Core Design Contradiction:
ProductivityVSManufacturing precision

Solution Approach 1:

The adjustment assembly is segmented into independent adjustment mechanisms for each lens, all accessible through the single assembly opening created by removing the end cover. This allows multiple lenses to be adjusted simultaneously with the same productivity benefit while maintaining individual precision through separate adjustment controls.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The adjustment mechanisms are arranged in a spatial configuration that allows operators to access and adjust multiple lenses from different angles and positions through the assembly opening. This dimensional arrangement enables simultaneous adjustment of multiple lenses while maintaining precise control over each individual lens alignment.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

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

Improves lens adjustment efficiency, enhances display quality by minimizing color deviation and speckle formation, and increases factory inspection and maintenance efficiency.

Implementation Method 1

incorporating a polarization conversion component to align polarization modes, reducing interference and speckle generation

Methodology Applied
Scientific EffectPolarization conversion: Polarisation

Data Source

PatentUS20250362577A1Laser projection device
Publication Date: 2025.11.27 QINGDAO HISENSE LASER DISPLAY CO LTD
  • US20250362577A1 patent drawing
  • US20250362577A1 patent drawing
  • US20250362577A1 patent drawing

AI summary

The present disclosure provides a laser projection device, including a light source system, an optical engine system, a projection lens, and a heat dissipation device; wherein the light source system is adjacent to and connected to the heat dissipation device, the light source system is configured to provide a laser beam to the optical engine system, and the heat dissipation device is configured to dissipate heat from the light source system; and the optical engine system and the projection lens are disposed on one side of the light source system and stacked along a first direction, the optical engine system is configured to modulate the laser beam provided by the light source system into an image beam and then emit the image beam to the projection lens, and the projection lens is configured to image the image beam to an image and then emit the image to a projection screen.