摘要:
A lamp device and a projector having the lamp device eliminated of light leaking in a direction opposite to a reflecting direction at a rear end of an encapsulation fixing an arc tube on a reflection mirror is simply and inexpensively provided. An arc tube and a reflection mirror are provided. The arc tube has encapsulations one of which is inserted in a cylinder of the reflection mirror thereby securing the encapsulation and the cylinder together by an adhesive. The bulb of the arc tube and the other encapsulation are positioned on a side close to a reflection surface of the reflection mirror. The encapsulation inserted in the cylinder and positioned on a side opposite to the reflection surface has an end at least at an end face of which is covered with the adhesive thereby providing light shield.
摘要:
A lighting unit including a light source lamp having a light emitting tube and an ellipsoid reflector, and an optical to parallelize illumination light released from the reflector, characterized in that: a first focal point P1, which is one of the two focal points P1 and P2 positioned inside and outside the reflector and is located on the side of the reflecting surface of the reflector, is contained within the light emitting tube, and a light emission center Q of the light emitting tube is offset in a virtual plane perpendicular to a reflector central axis OC; and a parallelizing lens has a lens optical axis on a reference axis L parallel to the reflector central axis OC, and the lens optical axis of the parallelizing lens is offset in a direction opposite to a direction where the emission center Q of the light emitting tube is offset from the reflector central axis OC.
摘要:
A manufacturing apparatus (100) of an optical unit includes an optical component positioning jig (300) that has a plurality of holders for holding a plurality of optical components and is positioned at a designed predetermined position of the plurality of optical component, and a table (200) that holds an optical component casing so that a part of the optical component positioning jig (300) can be inserted into an opening formed on the optical component casing.