Anti-fogging medical optical hard lens

The invention discloses an anti-fogging medical optical hard lens which comprises a shell of a closed structure, one end of the shell is provided with an objective lens end face, the other end of the shell is provided with an eyepiece end face, the end, provided with the eyepiece end face, of the shell is connected with an eyeshade, an inner tube is arranged in the shell, and a gap is formed between the inner tube and the shell. A heating system and at least one light transmitting beam are arranged in the gap, one end of the light transmitting beam extends to the end face of the objective lens and corresponds to the light transmitting plate on the end face of the objective lens, the other end of the light transmitting beam penetrates out of the shell to be connected with the cold light source, and the heating system comprises a heating element and a temperature sensing element which are arranged close to the end face of the objective lens. The heating element and the temperature sensing element are connected