US 12,084,006 B2
Optical monitoring device
Lars Najorka, Langen (DE); Steffen Walter, Seligenstadt (DE); Ole Gustav Johannessen, Southampton (GB); Oliver Simon Matthews, Seligenstadt (DE); and Mincheol Shin, Seligenstadt (DE)
Assigned to EchoVista GmbH, Seligenstadt (DE)
Filed by EchoVista GmbH, Seligenstadt (DE)
Filed on May 8, 2023, as Appl. No. 18/144,260.
Application 18/144,260 is a continuation of application No. 16/766,681, granted, now 11,820,337, previously published as PCT/EP2018/074942, filed on Sep. 14, 2018.
Claims priority of application No. 10 2017 127 855.9 (DE), filed on Nov. 24, 2017.
Prior Publication US 2023/0356696 A1, Nov. 9, 2023
Int. Cl. B06B 1/06 (2006.01); B08B 7/02 (2006.01); B60S 1/62 (2006.01); G02B 27/00 (2006.01)
CPC B60S 1/62 (2013.01) [B06B 1/0622 (2013.01); B06B 1/0659 (2013.01); B08B 7/028 (2013.01); G02B 27/0006 (2013.01)] 14 Claims
OG exemplary drawing
 
1. An optical monitoring system for monitoring surroundings, comprising:
an optical monitoring apparatus having
a lens, and
a protection panel (12; 14; 114; 314; 112; 218; 318) which protects the lens from precipitation and covers at least visual or scanning field which is captured by the lens of the monitoring apparatus,
wherein the protection panel (12; 14; 114, 214; 314; 112; 218; 318) forms a substrate for at least one ultrasonic transducer (10; 10 a-j; 1611; 1612; 1711-1718) and is acoustically coupled to at least one ultrasonic transducer (10; 10 a-j; 1611; 1612; 1711-1718),
wherein an edge distance (1430) of the at least one ultrasonic transducer (10; 10 a-j; 1611; 1612; 1711-1718) corresponds to a fraction or multiple of the wavelength of sound waves produced by the at least one ultrasonic transducer (10; 10 a-j; 1611; 1612; 1711-1718);
wherein the sound waves are surface waves;
wherein a constructive interference occurs between the sound waves produced by the at least one ultrasonic transducer (10; 10 a-j; 1611; 1612; 1711-1718) and a reflection of the surface waves from an edge of the substrate.