| 摘要 |
<p>An optical scanning apparatus includes a light source (20) to generate a beam, a lens (30/40/50) to transmit the beam generated from the light source (20), and a base member (10) to which the lens (30/40/50) is fixed, wherein the lens (30/40/50) is fixed to the base member (10) via a mount member (80) having a same coefficient of thermal expansion as the lens (30/40/50). According to the present general inventive concept, an optical member, such as the lens (30/40/50), is not directly joined to the base member (10) but is joined to the mount member (80) having the same coefficient of thermal expansion as the optical member and is then coupled to the base member (10). Consequently, the optical member is stably coupled to the base member (10) even when the temperature changes.</p> |
