老式电视机怎么成像的（老式电视机内部构造图）

{"rich_content":{"text":"老外对比老式电视和OLED电视成像技术，高清摄像机下的差别显","spans":null},"video":{"vid":"v038b0800000brdep9v298s97cenj3qg","duration":89.978,"width":1024,"height":576,"file_size":5461333,"thumb":{"web_uri":"tos-cn-p-0000/7c3b2dcf3c4d4beba19505b828916fa8","width":640,"height":360,"image_type":null,"mimetype":null,"encrypt_web_uri":null,"secret_key":null,"encrypt_algorithm":null,"extra":null},"video_size":{"high":{"duration":89.978,"file_size":4724626,"w":854,"h":480},"normal":{"duration":89.978,"file_size":3558042,"w":640,"h":360},"ultra":{"duration":89.978,"file_size":5976765,"w":1024,"h":576}},"is_encrypted":null,"md5":"7fb7628f95a0e9ffebb800267756df67","tos_key":null,"secret_key":null,"encrypt_algorithm":null,"extra":null}},