Abstract: An information generation device includes: a measurement unit configured to obtain a plurality of measurement results by performing a measurement of a vehicle size with respect to a same traveling vehicle a plurality of times; a detection unit configured to detect an accuracy of each of the plurality of measurement results; and a determination unit configured to determine a vehicle size of the traveling vehicle from the plurality of measurement results on the basis of the accuracies.

Abstract: A semiconductor optical module M is disclosed, where it includes a stem 2 that installing electronic components 1, a lead pin 3, a circular cap 10, and a lens 5 assembled within the cap 10; and has a flange 12 for welding in an end of the cap 10 opposite to the stem 2, the flange radially extending outward. When the cap 10 is welded to the housing A, the cap 10 may be abutted as setting the welding line b nearly equal to the right angle with respect to the flange 12 of the cap, which increases the welding strength. Because the flange does not form any walls of the cap, the loss of the air-tightness due to the welding may be prevented. Moreover, because the flange radially extends outward at the end of the cap, which is apart from the lens 5, the lens may be secured against the damage.

Abstract: An optoelectronic module having a package encapsulating an optoelectronic device, a triplicated sleeve having a lower metal ring, an intermediate insulating ring and an upper metal cover which are coupled by press-fitting in concentric disposal, and a receptacle fitted upon the upper metal cover. The optoelectronic module does not emit noise radio waves or is not subject to external noise. The module satisfies the stipulated standard that an electric field should be less than 54 dB?V/m at a 3 meter distant measuring spot in a frequency range higher than 1 GHz.

Abstract: An optoelectronic module having a package encapsulating an optoelectronic device, a triplicated sleeve having a lower metal ring, an intermediate insulating ring and an upper metal cover which are coupled by press-fitting in concentric disposal, and a receptacle fitted upon the upper metal cover. The optoelectronic module does not emit noise radio waves or is not subject to external noise. The module satisfies the stipulated standard that an electric field should be less than 54 dB?V/m at a 3 meter distant measuring spot in a frequency range higher than 1 GHz.

Abstract: An optical fiber cutter for cutting an optical fiber wire according to the principle of the stress-rupture includes a tension applying mechanism and a movable blade. The tension applying mechanism applies tension to the optical fiber wire in an axial direction thereof. The movable blade is contactable with the optical fiber wire in a direction perpendicular to the axial direction so as to impart an initial crack to the optical fiber wire to which the tension is applied. The movable blade contacts the optical fiber wire in only one direction, which is perpendicular to the axial direction.