Technical Knowledge

Evelyn: Hi Stephen, I recently purchased a new red dot sight with an aspheric lens, and I wonder what’s so special about the aspheric lens, can you lecture me about it?Stephen: Sure! Before we start talking about the aspheric lens, Evelyn, do you know much about its contrast the spheric lens?

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Evelyn: I found my scope can’t be zeroed even I used up almost all the adjustment. Stephen: Let me have a look, hum, it looks like I find the problem. Do you still remember I once said the installation of scope rings would influence shooting a lot?

Evelyn: Stephen，shall we continue the conversation about coating from last time?Stephen: Sure, then let's talk about something interesting this time. Do you know how the coating is plated onto the lens?