Optically structured element for a bird protection glass, optical system and use of the optically structured element

An optically structured element (1), for minimizing or preventing bird collisions, comprising:

• at least one carrier element (2);
• at least one high-reflectivity region (3);
• and
• at least one low-reflectivity region (4);
• the carrier element (2) includes at least one of
• a) the at least one high-reflectivity region (3) or
• b) the at least one low-reflectivity region (4);
• the high-reflectivity region (3) has a first double cone reflectance in a double cone wavelength range (5) and a first visible light (VIS) transmittance in a VIS wavelength range;
• the low-reflectivity region (4) has a second double cone reflectance in the double cone wavelength range (5) and a second VIS transmittance in the VIS wavelength range;
• the double cone wavelength range (5) is between greater than or equal to 400 nm and less than or equal to 700 nm;
• the VIS wavelength range is between greater than or equal to 380 nm and less than 780 nm;
• a double cone reflectance difference of the first double cone reflectance and the second double cone reflectance is greater than or equal to 5%;
• and
• a VIS transmission ratio of the first VIS transmittance and the second VIS transmittance is greater than or equal to 70% and less than or equal to 200%.