摘要:
There are provided an optical non-destructive inspection apparatus that can inspect a measurement object such as a wire bonding portion in a broad measurable temperature range in a short time, with high reliability, and an optical non-destructive inspection method using it. The apparatus includes a focusing-collimating unit (10), a heating laser beam source (21), a heating laser beam guide unit, a first infrared detector (35), a second infrared detector (31), an emitted-infrared selective guide unit, and a control unit (50). The control unit (50) controls the heating laser beam source (21), measures a temperature rise characteristic that is a temperature rise state of a measurement spot (SP) based on a heating time, on the basis of a ratio between a detected value from the first infrared detector (35) and a detected value from the second infrared detector (31), determines a state of a measurement object (a bonding structure (97)) based on the temperature rise characteristic, and changes at least one of wavelengths of infrared light beams guided to the first infrared detector (35) and the second infrared detector (31) based on a measured temperature during measurement.
摘要:
An optical non-destructive inspection method includes: heating including setting a measurement spot (SP) on a surface of a workpiece and irradiating the measurement spot with heating laser light using a heating laser light source (21), heat ray detectors (31, 32), and a controller (50); acquiring a temperature rise property that is a temperature rise state of the measurement spot according to a heating time by detecting a heat ray radiated from the measurement spot to determine a temperature at the measurement spot; and determining whether or not a pressure contact state at pressure contact portions (91B, 92B), which include a contact area and a contact pressure, is appropriate based on the temperature rise property.
摘要:
There are provided an optical non-destructive inspection apparatus and an optical non-destructive inspection method, which can inspect a measurement object such as a wire bonding portion in a broad measurable temperature range in a short time, with high reliability. The apparatus includes a focusing-collimating unit (10), a heating laser beam source (21), a heating laser beam guide unit, an infrared detector (33), an emitted-infrared guide unit, first and second correcting laser beam sources (22, 23), first and second correcting laser beam guide units, first and second correcting laser detectors (31, 32), first and second reflected laser beam guide units, and a control unit (50). The control unit (50) controls the heating laser beam source (21) and the first and second correcting laser beam sources (22, 23), measures a temperature rise characteristic that is a temperature rise state of a measurement spot (SP) based on a heating time, on the basis of a detection signal from the infrared detector (33) and detection signals from the first and second correcting laser detectors (31, 32), and determines a state of a measurement object (bonding structure (97)) based on the measured temperature rise characteristic.
摘要:
There are provided an optical non-destructive inspection apparatus which can inspect a measurement object such as a wire bonding portion in a broad measurable temperature range in a short time, with high reliability, and an optical non-destructive inspection method using it. The apparatus includes a focusing-collimating unit (10), a heating laser beam source (21), a heating laser beam guide unit, an infrared detector (31), an emitted-infrared guide unit, a correcting laser beam sources (22), a correcting laser beam guide unit, a correcting laser detector (32), a reflected laser beam guide unit, and a control unit (50). The control unit (50) controls the heating laser beam source (21) and the correcting laser beam source (22), measures a temperature rise characteristic that is a temperature rise state of a measurement spot (SP) based on a heating time, on the basis of a detection signal from the infrared detector (31) and a detection signal from the correcting laser detector (32), and determines a state of a measurement object (bonding structure (97)) based on the measured temperature rise characteristic.