Device for generating light patterns using a one-dimensional focused illumination system

Simple SummaryContent extracted from patent full text and abstract with AI.

The invention describes a device for generating specific one-dimensional light patterns, such as parallel light stripes, using a linear (one-dimensional) illumination system that includes multiple light sources (e.g., LEDs or optical fibers) and an array of lenses (such as cylindrical lenses or others). The system focuses and bundles light to create bright, homogeneous, and scalable stripe patterns suitable for use in advanced photogrammetric 3D surface measurement systems, improving on traditional projectors or laser systems.

Use CasesContent extracted from patent full text and abstract with AI.

• 3D surface reconstruction for industrial inspection and quality control
• Photogrammetric measurements using one or more camera systems
• Fast and accurate object shape or dimension acquisition in manufacturing lines
• Non-contact measurement of large surfaces in automation or robotics
• Medical surface scanning and dermatology analysis
• Archaeological or cultural heritage documentation and digitization
• Robotic vision and alignment tasks requiring high-speed acquisition of structured lighting information

BenefitsContent extracted from patent full text and abstract with AI.

• Provides high light intensity for faster measurements with reduced integration time
• Allows quick and flexible generation of different light patterns via electronic control
• Highly scalable in one dimension without loss of light intensity, making it suitable for large surfaces
• Minimizes losses due to shadows or occlusion, maximizing usable light
• Enables robust, accurate, and faster 3D measurements compared to conventional projectors
• Reduces the effect of environmental vibrations and other interferences on measurement accuracy
• Compatible with both line and matrix (area) camera systems
• Enables the use of advanced 3D measurement techniques, such as phase-shift or multi-step processes, with simple hardware adjustments
• Flexibility in choosing the type of light sources (LEDs or fiber optics) and lens configurations
• Improved safety compared to laser-based illumination systems

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Inventors & Applicants

Patent Abstract

The invention relates to a device for generating light patterns, comprising at least one one-dimensionally focussed illumination device having at least one lamp and a reflector. The homogeneous light generated by the illumination device is present as bundles across a field of adjacent lenses running orthogonally to the illumination direction, such that parallel stripes of light can be imaged and specific one-dimensional light patterns can be generated.