A detection device and a detection method for detecting a hole or a pinhole present in a material are provided. The detection device includes: an illumination unit irradiating light at one side of the material; a light receiving unit acquiring an image of the material at the other side of the material to output a detection signal; a detection unit determining whether or not the hole or the pinhole is present in the material using the detection signal; and an illumination control unit dividing the illumination unit into a plurality of regions and controlling the illumination unit to irradiate light having different intensities of illumination for each of the plurality of regions.

A separator producing method includes the steps of: winding up, around a core (81, 53), a separator (12a, 12b) having a defect (D) detected; and providing a defect code (DC2) including information on a position of the defect (D) in the longitudinal direction of the separator (12a, 12b) on (i) the outermost portion (86, 86b) of the separator (12a, 12b), wound around the core (81, 53), or (ii) the core (81, 53), around which the separator (12a, 12b) is wound.

A separator producing method includes the steps of: winding up, around a core (81, 53), a separator (12a, 12b) having a defect (D) detected; and providing a defect code (DC2) including information on a position of the defect (D) in the longitudinal direction of the separator (12a, 12b) on (i) the outermost portion (86, 86b) of the separator (12a, 12b), wound around the core (81, 53), or (ii) the core (81, 53), around which the separator (12a, 12b) is wound.

A laser welding device includes a laser irradiation unit, a visible light sensor and a control unit. The laser irradiation unit irradiates a laser beam. The visible light sensor detects an emission intensity of visible light that is emitted from a welded portion. The control unit can freely switch the operation of the laser irradiation unit between a welding mode for welding a plurality of metal members to each other by irradiating laser beam and an inspection mode for irradiating the laser beam again onto the welded portion as an inspection light. After the welding the metal members, the control unit switches the laser irradiation unit to the inspection mode to irradiate the laser beam again onto the welded portion as an inspection light. The control unit detects if a hole is generated after welding based on changes in the emission intensity of the visible light.

An object of the present invention is to easily assemble and exchange a reflection type optical device and their parts in an optical sensor for bill validation by fitting unitized housings into openings of partitions. The optical sensor for bill validation includes a reflection type optical device (13, 30) that has a housing (41) for receiving an optical component (40) and also forming a part of a bill passageway (20). The housing (41) has a lid (42) and a box (43), the lid (42) being formed of light-permeable materials to allow lights irradiated from the inner optical component (40) and lights reflected on the bill to pass through the lid (42), and the box (43) surrounding the inner optical component (40) in combination with the lid (42) that is fit into an opening (53) formed in a partition (11, 12).

An optical method and system are presented for use in measurement of isolated features of a structure. According to this technique, Back Focal Plane Microscopy (BFM) measurements are applied to a structure and measured data indicative thereof is obtained, wherein the BFM measurements utilize dark-field detection mode while applying pinhole masking to incident light propagating through an illumination channel towards the structure, the measured data being thereby indicative of a scattering matrix characterizing scattering properties of the structure, enabling identification of one or more isolated features of the structure.

Aspects of the disclosure relate to systems and techniques for inspecting seals for high altitude balloons. In one example, a system may include a reflective surface, a translucent material on the reflective surface, and a movable light source configured to move along the reflective surface and provide light to the reflective surface. The light is provided such that it is reflected from the reflective surface and through the translucent material in order to backlight a balloon envelope seal for inspection. A method for inspecting a balloon envelope seal may include placing balloon envelope material on a table, forming a seal between portions of the material, moving a light over the seal, shining light onto a reflective portion of the table below the seal to backlight the seal, and inspecting the seal using the backlighting of the seal.

A heating device (1) of a container processing device includes a main turret (2) which supplies a container (10) to high-frequency induction heating element (3) for providing a heat treatment to the container (10) so that the container (10) is sucked by bottom suction device (21), a container supply turret (5) which supplies the container (10) to the main turret (2); and an auxiliary turret (4) provided in a receiving area of the main turret (2). The auxiliary turret (4) is configured to center the container (10) towards the bottom suction device (21) in the receiving area.

A pin-hole detection device includes: a film supply unit provided with a roller on which the film is wound; a base part disposed adjacent to the film supply unit, seated on a ground, and formed by connecting a plurality of profiles; a light emitting unit mounted on the base part and emitting light; a film unwinding unit mounted on the base part, configured to unwind the film provided from the film supply unit, and allow the unwounded film to pass through the light emitting unit while being unfolded; and a luminous intensity measuring unit mounted on the base part and disposed to face the light emitting unit to measure the luminous intensity of light passing through the unfolded film, wherein the film unwinding unit includes a winder roller unit rotating and moving the film in one direction while compressing the film, and an idle roller unit rotated according to movement of the contacted film and configured to guide the unwound film to determine a movement path.

A pin-hole detection device includes: a film supply unit provided with a roller on which the film is wound; a base part disposed adjacent to the film supply unit, seated on a ground, and formed by connecting a plurality of profiles; a light emitting unit mounted on the base part and emitting light; a film unwinding unit mounted on the base part, configured to unwind the film provided from the film supply unit, and allow the unwounded film to pass through the light emitting unit while being unfolded; and a luminous intensity measuring unit mounted on the base part and disposed to face the light emitting unit to measure the luminous intensity of light passing through the unfolded film, wherein the film unwinding unit includes a winder roller unit rotating and moving the film in one direction while compressing the film, and an idle roller unit rotated according to movement of the contacted film and configured to guide the unwound film to determine a movement path.