Abstract: A scanning-type distance measuring apparatus includes: an optical system 9 having a first deflecting member 9a that deflects measurement light output from a light transmitting unit 3 toward a space to be measured via an optical window, a light receiving lens 9c that condenses reflection light from an object R to be measured existing in the space to be measured, and a second deflecting member 9b that deflects the reflection light passed through the light receiving lens toward a light receiving unit 5 disposed to oppose the light transmitting unit 3; a scanning mechanism 4 that rotates the optical system 9 about a predetermined axis P; and an optical member 90 that outputs the measurement light deflected by the first deflecting member 9a from an incident light path Lc of the reflection light to the second deflecting member 9b.

Abstract: A scanning-type distance measuring apparatus includes: an optical system 9 having a first deflecting member 9a that deflects measurement light output from a light transmitting unit 3 toward a space to be measured via an optical window, a light receiving lens 9c that condenses reflection light from an object R to be measured existing in the space to be measured, and a second deflecting member 9b that deflects the reflection light passed through the light receiving lens toward a light receiving unit 5 disposed to oppose the light transmitting unit 3; a scanning mechanism 4 that rotates the optical system 9 about a predetermined axis P; and an optical member 90 that outputs the measurement light deflected by the first deflecting member 9a from an incident light path Lc of the reflection light to the second deflecting member 9b.

Abstract: Scanning rangefinder of simple, compact construction. The rangefinder is furnished with: an outer cover (1) in which a transparent window (2) is formed; a cylindrical rotary unit (3) inside the outer cover (1); a scanning/receiving window (4) provided in the rotary unit (3); a dual scanning/receiving mirror (5) disposed, angled, along the rotational axis of the cylindrical rotary unit (3); a motor (6) for rotationally driving the rotary unit (3); a disk part (13) arranged in the cylindrical rotary unit (3), anchored in an inside region thereof; a beam projector (14) anchored in a location where it is disposed slightly spaced apart from the rotational axis of the rotary unit (3); and a light receiver (16) anchored to, arranged coincident with the rotational axis of, the disk part (13) in the inside region of the rotary unit (3), and connected to a distance computation circuit (19).

Abstract: Provided is an optical device capable of detecting a breakage of a housing that accommodates an optical system at an early stage and with reliability. The optical device includes a housing having an optical window which is optically transparent and an optical system that is accommodated in the housing and projects/receives light through the optical window, and has a construction in which a electrically conducting region is provided to the optical window of the housing and a breakage of the optical window is detected based on an electric change of the current-carrying region.

Abstract: Scanning rangefinder of simple, compact construction. The rangefinder is furnished with: an outer cover (1) in which a transparent window (2) is formed; a cylindrical rotary unit (3) inside the outer cover (1); a scanning/receiving window (4) provided in the rotary unit (3); a dual scanning/receiving mirror (5) disposed, angled, along the rotational axis of the cylindrical rotary unit (3); a motor (6) for rotationally driving the rotary unit (3); a disk part (13) arranged in the cylindrical rotary unit (3), anchored in an inside region thereof; a beam projector (14) anchored in a location where it is disposed slightly spaced apart from the rotational axis of the rotary unit (3); and a light receiver (16) anchored to, arranged coincident with the rotational axis of, the disk part (13) in the inside region of the rotary unit (3), and connected to a distance computation circuit (19).