| こ | う | 
|---|---|
| 光 | 
| じ | く | 
|---|---|
| 軸 | 
noun
Physics terminology.- optical axis (of a lens, spherical mirror, etc.).
- optic axis (of a crystal).
Variations
| Pronunciation | Kanji | Kana | Is Common | ||||||
|---|---|---|---|---|---|---|---|---|---|
| 
 
 | 光軸 | こうじく | 
Contained Kanji Breakdown
ray, light
ひかり コウ ひか.る (2nd, N3)
axis, pivot, stem
ジク (8th, N1)