Actuator-Aligned Multi-Channel Projector for Image Misalignment Correction
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Solution Overview
Problem
Conventional display systems in headsets suffer from misalignment of optical components due to curing of bonding adhesives, thermal effects, or physical impacts, leading to degraded performance and chromatic aberration in images.
Innovation Solution
An actuator-aligned multi-channel projector assembly that dynamically adjusts the positions of optical components using actuators to maintain alignment, compensating for misalignment caused by thermal changes or physical impacts, ensuring minimal chromatic aberration in the output image.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If optical components are glued into place after alignment, then initial alignment precision is achieved, but misalignment occurs over time due to adhesive curing, thermal effects, or physical impacts
Solution Approach 1:
The patent transforms the static glued alignment system into a dynamic adjustable system by introducing actuators (piezoelectric, voice coil, or shape memory alloy) that can actively adjust the position of optical components in real-time, allowing the system to compensate for misalignment caused by thermal effects, adhesive curing, or physical impacts
Solution Approach 2:
The system implements a feedback control mechanism where a controller receives information about misalignment (from sensors or system state) and automatically adjusts actuator positions to maintain proper alignment, creating a closed-loop system that continuously corrects deviations from the desired alignment state
2Reliability
If actuators are added to dynamically adjust optical components, then alignment stability is improved, but device complexity increases
Solution Approach 1:
The system is designed to be self-correcting, where the controller automatically detects and compensates for misalignment without requiring external intervention or complex manual adjustment mechanisms, allowing the system to maintain alignment stability through autonomous actuator control
Solution Approach 2:
The patent utilizes changes in physical parameters of the actuators (electrical voltage for piezoelectric, current for voice coil, or temperature for shape memory alloy) to achieve precise positional adjustments of optical components, transforming electrical or thermal parameter changes into mechanical position corrections
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 system effectively maintains image alignment and reduces chromatic aberration by dynamically adjusting optical components, improving the quality of the displayed images in headsets.
Implementation Method 1
through curing of bonding adhesives, thermal effects, use (e.g., drops), or some combination thereof, the optical components may become misaligned
Data Source
AI summary
An actuator aligned multi-channel projector assembly generates image light using a plurality of projectors. A projector includes a plurality of optical components in optical series and one or more actuators. The plurality of optical components include a light source and a plurality of optical elements. The light source generates first light. The plurality of optical elements project the first light. The first light is output from the projector and combined with a second to form an image presented via a display element of a headset to a user. The one or more actuators adjust a position of at least one optical component of the plurality of optical components relative to another optical component in order to compensate for misalignment of a portion of the image formed from the first light relative to a portion of the image formed from the second light.