Image sensor module, camera module and electronic device

An image sensor module, comprising:

• a sensing surface;
• a filter element facing towards the sensing surface, and comprising:
• a substrate;
• an optical deposition layer structure disposed on one side of the substrate away from the sensing surface, wherein the optical deposition layer structure is multilayered, and a layer number of the optical deposition layer structure is more than 10;
• and
• an optical coating layer disposed corresponding to the optical deposition layer structure and on one side of the substrate facing towards the sensing surface, wherein a layer number of the optical coating layer comprises one, and a thickness of the optical coating layer is between 900 nm to 5 μm;
• and
• a first anti-reflective microstructure disposed on the sensing surface, an air layer formed between the first anti-reflective microstructure and the filter element, and the first anti-reflective microstructure partially overlapping with the air layer in a direction perpendicular to the sensing surface;
• wherein a transmittance of the filter element in a wavelength range of 450 nm to 550 nm is greater than or equal to 80%;
• a first wavelength greater than 550 nm that provides the transmittance of the filter element being 50% is T50;
• a reflectance of the first anti-reflective microstructure in a wavelength range of 450 nm to the first wavelength is less than or equal to 0.93%, and the following condition is satisfied:
• 600 nm≤T50≤720 nm.