Unverified50% confidenceFactExact time
根据衍射极限公式，光束发散角与波长成正比、与发射口径成反比
1
Sources
50%
Confidence
Long-term
Relevance
8/27/2026
First Seen
Sources
Related Entities
Related Claims
Unverified可见光或近红外激光波长约0.5-1.5微米，比射电波（厘米到米级）短数万倍，使同口径发射器产生的激光束发散角可小到纳弧度量级69% similarUnverifiedThe specular reflection characteristics of water surfaces cause near-infrared laser beams (typically at wavelengths of 905 nm or 1,550 nm) to be reflected away at very low angles, creating large areas with no return signal.67% similar
Cite This Claim
Stable URI
https://kongchang.com/claim/809998API
curl https://kongchang.com/api/v1/knowledge/claims/809998MCP
get_claim(id=809998)