# คอลลิเมเตอร์
## Noun (N)
### Sense: optical device consisting of a tube containing a convex achromatic lens at one end and a slit at the other with the slit at the focus of the lens; light rays leave the slit as a parallel beam
- 准直仪
- 准直器
- 平行光管
- 瞄准仪