Top panel for tactile sense presentation device, tactile sense presentation device, and method for manufacturing top panel for tactile sense presentation device

3:

• A top panel for a tactile sense presentation device, the top panel being for use in a tactile sense presentation device, the top panel having an outer principal surface located on an exterior side of the tactile sense presentation device and including ruggedness provided on at least a portion of the outer principal surface,
• the ruggedness including:
• first ruggedness in which where a cutoff value of a high-pass filter λc1 is 14 μm and a cutoff value of a low-pass filter λs1 is 0.35 μm, a maximum height of the ruggedness is 0.5 nm to 2000 nm and a spacing between the ruggedness is 3 μm to less than 50 μm;
• and
• second ruggedness in which where a cutoff value of a high-pass filter λc2 in a 5 μm square area is 2.5 μm, a three-dimensional arithmetical mean height Sa of the ruggedness is 0.5 nm to 100 nm and a maximum height Sz of the ruggedness is 8 nm or more.

7:

• A tactile sense presentation device comprising:
• the top panel for a tactile sense presentation device according to claim 1;
• and
• an actuator that applies ultrasonic waves to the top panel for a tactile sense presentation device.

8:

• A method for manufacturing the top panel for a tactile sense presentation device according to claim 1, the method comprising the steps of:
• preparing an original panel having a principal surface;
• and
• subjecting the principal surface of the original panel to a wet blasting treatment.