FIELD: wave focusing devices.
SUBSTANCE: invention relates to devices for focusing elastic waves into a region with transverse dimensions less than the diffraction limit and can be used for research, instrumentation and diagnostic work in implementation of technological processes and the study of biological objects. A mesoscale cuboid plate lens consists of an array of parallel plates set at an angle of +α to the incident radiation above the optical axis of the lens and at an angle -α below the optical axis of the lens, the width of the plates is equal to the length of the cuboid face, and made of a material with an impedance value different from the environment impedance. The angle of inclination of the plates decreases across the optical axis of the lens towards its periphery, creating a smooth gradient in the effective refractive index, which is in the range from less than 2 to 1.2.
EFFECT: enabling subwavelength focusing and optimization of lens characteristics.
1 cl, 1 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| DEVICE OF THE NOISE-PROTECTIVE CUBOID SCREEN ELEMENT | 2022 |
|
RU2791826C1 |
| CONTROLLED ACOUSTIC FOCUSING DEVICE | 2020 |
|
RU2743192C1 |
| PHOTON JET SHAPING DEVICE | 2021 |
|
RU2756882C1 |
| APPARATUS FOR FORMING A PHOTONIC HOOK | 2022 |
|
RU2788342C1 |
| SCANNING ACOUSTIC MICROSCOPE | 2020 |
|
RU2756411C2 |
| ULTRASONIC INFRARED THERMOGRAPHY DEVICE WITH FOCUSING ACOUSTIC LENS | 2022 |
|
RU2791424C1 |
| WAVEGUIDE MICROWAVE PROBE | 2023 |
|
RU2804608C1 |
| METHOD AND DEVICE FOR FORMING INCLINED PHOTON JET FORMED BY MESO-SIZED PARTICLE | 2023 |
|
RU2809980C1 |
| DEVICE FOR NON-CONTACT ACOUSTIC DRYING OF MATERIALS | 2022 |
|
RU2794688C1 |
| ULTRASONIC DEVICE FOR WASHING CLOTHES | 2020 |
|
RU2746823C1 |
