It's possible that:
* It's a misspelling. It could be a misspelling of "optic" or "ecstatic."
* It's a neologism. Someone might have invented the word, but it hasn't gained widespread usage.
* It's specific to a particular field. There might be a specialized field or industry that uses this term, but it's not commonly known outside that context.
To understand what "ecoptic" might mean, you'll need more context. Please provide more information about where you encountered this word, such as the source, the surrounding text, or the intended meaning.