| 主权项 |
1. A portable optical instrument comprising:
a body portion to which a lens barrel that holds a lens is fixed; a light emitting unit including a leg portion that swings relatively to the body portion around a first rotation shaft which is parallel to an axis orthogonal to an optical axis of the lens, and a light source portion for illumination provided at a front end of the leg portion, the light emitting unit moving between a housed state in which the leg portion is along an outer surface of the body portion and a projected state in which the leg portion stands up with respect to the outer surface and the light source portion projects from the body portion; and a sighting device which includes an optical element having a concave-surface-shaped reflection surface, and a sighting device light source opposed to the reflection surface, the sighting device being configured to form a reflection light of the sighting device light source, wherein the optical element is disposed between the body portion and the light emitting unit when the light emitting unit is in the housed state, the light emitting unit includes a front cover portion which covers the light source portion in the housed state, an opening portion which penetrates the leg portion in a direction along the optical axis in the projected state, and a rear cover portion which opens and closes the opening portion by swinging relatively to the leg portion around a second rotation shaft parallel to the first rotation shaft on a more distal end side of the leg portion than the opening portion, the sighting device is disposed so as to penetrate the opening portion when the light emitting unit is in the projected state, the optical element is held by an optical element holding frame which swings relatively to the body portion around a third rotation shaft parallel to the first rotation shaft, and the optical element holding frame is brought into a lodged state in which the optical element holding frame is along the outer surface of the body portion, when the sighting device is not used, and the optical element holding frame is brought into a standing state in which the optical element holding frame stands up with respect to the outer surface and presses the rear cover portion in a direction for opening the opening portion in the standing state, when the sighting device is used. |
