Abstract: A half mirror, a method for manufacturing the half mirror and a lighting unit using the half mirror can include a base material and a half mirror layer formed on the base material. The half mirror layer can include a chrome oxide layer, which is made by only a sputtering method, and can be configured to perform a high thermal resistance. Accordingly, the half mirror cannot crack even under various circumstances such that repeat low/high temperatures. Thus, the disclosed subject matter can provide half mirrors having a high durability such as a thermal resistance and methods for manufacturing such the half mirrors in simple manufacturing processes, and also can provide lighting units using the half mirror having a high durability, which can maintain a stable reflectivity for a long term and which can also maintain a good appearance for a long-term use because the half mirror can prevent cracking therein.

Abstract: A half mirror, a method for manufacturing the half mirror and a lighting unit using the half mirror can include a base material and a half mirror layer formed on the base material. The half mirror layer can include a chrome oxide layer, which is made by only a sputtering method, and can be configured to perform a high thermal resistance. Accordingly, the half mirror cannot crack even under various circumstances such that repeat low/high temperatures. Thus, the disclosed subject matter can provide half mirrors having a high durability such as a thermal resistance and methods for manufacturing such the half mirrors in simple manufacturing processes, and also can provide lighting units using the half mirror having a high durability, which can maintain a stable reflectivity for a long term and which can also maintain a good appearance for a long-term use because the half mirror can prevent cracking therein.