Small-distance position sensing by using holograms of conical waves

Area of Science:

• Optoelectronics
• Optical Metrology
• Sensor Technology

Background:

• Traditional optical range sensors face limitations in achieving high resolution at short distances.
• Accurate depth sensing is crucial for applications in robotics, automation, and quality control.

Purpose of the Study:

• To propose a new optical range sensor design.
• To achieve high resolution for measurements at small ranges.
• To integrate illumination and detection components efficiently.

Main Methods:

• The sensor operates on the principle of optical triangulation.
• Illumination and detection equipment are combined within a single, large-aperture unit.
• Conical waves are employed to achieve inclination of the line foci.
• A holographic optical element reconstructs the conical waves.

Main Results:

• The proposed sensor design achieves high resolution at small ranges.
• Integration of components in a single unit simplifies the system.
• The use of conical waves and a holographic optical element enables precise focusing.

Conclusions:

• The developed optical range sensor offers a promising solution for high-precision, short-range measurements.
• The innovative use of holographic optical elements and conical waves enhances sensor performance.
• This technology has potential applications in various fields requiring accurate proximity sensing.