supermarket LED downlights have adopted different methods to solve the glare and light spots of LED lighting lamps, some of which are brushed PC masks, some are sanded masks, and some are made of special phosphor materials, but these methods are not ideal. LED lighting is an application lamp with a bright future market. Solving the glare and spot problems of LED lighting lamps can better occupy the market. In the specific production process, the optical diaphragm can be used to change the LED point light source that has been hashed onto the diaphragm into a surface light source for uniform output and uniform diffusion, so that the light becomes very uniform, and the illumination range of the light is expanded to about 18 degrees, thus completely solving the problems of light spots and lighting blind spots.