The invention relates to: A chamber (101, 201, 301, 401) for processing electronic devices (414), the use of such a chamber and a method. The object of the present invention is to provide a flexible system for and method of decreasing the processing time per unit of electronic devices during production and test, thus reducing costs. The problem is solved in that the chamber (101, 201, 301, 401) is adapted for handling several devices (414) simultaneously and said processing comprises a transfer of airborne signals (429, 430, 431). This has the advantage of allowing a simultaneous test under controlled and homogeneous conditions. The invention may be used in the production and test of electronic devices such as mobile communications devices.

A chamber for and a method of processing electronic devices and the use of such a chamber

The present invention for detecting ultasonic displacements includes a detection laser to generate a first pulsed laser beam to generate the ultrasonic surface displacements on a surface of the target. A seocond pulsed laser beam to detect the ultrasonic surface displacements on a surface of the target. Collection optics to collect phase modulated light from the first pulsed laser beam either reflected or scattered by the target. An interferometer which processes the phase modulated light and generate at least one output signal. A processor that processes the at least one output signal to obtain data representative of the ultrasonic surface displacements at the target.

Method and apparatus for ultrasonic laser testing

The present invention detects ultrasonic displacements includes a detection laser to generate a first pulsed laser beam to detect the ultrasonic surface displacements on a surface of the target. Collection optics to collect phase modulated light from the first pulsed laser beam either reflected or scattered by the target. An optical amplifier which amplifies the phase modulated light collected by the collection optics. An interferometer which processes the phase modulated light and generate at least one output signal. A processor that processes the at least one output signal to obtain data representative of the ultrasonic surface displacement at the target.

Method and apparatus for detecting ultrasonic surface displacements using post-collection optical amplification

A laser light amplification system that amplifies a laser beam emitted from a source as low-amplification seed laser light signal. The low-amplification seed laser light signal is amplified by stimulating emissions of the population inversion provided by a pumping diode to generate an amplified laser light signal. Amplified laser light signal is directed to an object undergoing laser ultrasound testing. Amplified laser light is scattered by the sound energy wave about the object. Scattered laser light is collected by an interferometer and used to detect and characterize acoustic energy. The present invention provides higher pulse rates, improved pointing stability, and optionally variable pulse rates for a variety of uses, including for non-destructive laser ultrasonic testing of materials.

System and method for high-speed laser detection of ultrasound

The invention is directed to an ultrasonic testing system. The system tests a manufactured part for various physical attributes, including specific flaws, defects, or composition of materials. The part can be housed in a gantry system that holds the part stable. An energy generator illuminates the part within energy and the part emanates energy from that illumination. Based on the emanations from the part, the system can determined precisely where the part is in free space. The energy illumination device and the receptor have a predetermined relationship in free space. This means the location of the illumination mechanism and the reception mechanism is known. Additionally, the coordinates of the actual testing device also have a predetermined relationship to the illumination device, the reception device, or both. Thus, when one fixes the points in free space where the part is relative to either of the illumination device or the reception device, one can fix the point and/or orientation of the testing device to that part as well. It should be noted that the results of the point and/or orientation detection may also be used in an actuator and control system. If the position of the testing device needs to be altered with respect to the tested object, the control system and actuator may use the results of this determination to move the testing device relative to the tested object.

System and method for locating and positioning an ultrasonic signal generator for testing purposes

A variable volume test apparatus (10) utilizes an adjustable ceiling (18) to vary the volume of the chamber (20). The ceiling (18) is sealed in its new position through the use of an inflatable bladder (26). Adjustable vents (58) are positioned in the ceiling (18) and walls (24) to direct fluid flow into the chamber (20). Floating joints (84) within the chamber doors (16) allow the doors' inner walls (80) to contract or expand relative to the outer walls (84) without creating a corresponding stress on the outer walls (84) or the rivets (86). As a safety feature, the door locks (150) are computer controlled so that the doors (16) cannot be unlocked from the outside until the test chamber (20) reaches an operator safe condition. One door (16), however, has an override button (250) that allows the operator to open the door (16) from the inside of the test chamber (20). A retractable, vibration table (100) with shock absorbers (138, 140) and a hand brake (128) is also provided.

Variable volume test chamber

A testing apparatus which has a test chamber located within a chamber frame. The apparatus includes a computer controlled ergonomic system which can vary the temperature of the test chamber. Within the test chamber is an adjustable ceiling that can be moved to vary the volume of the chamber. Extending around the outer edge of the ceiling is an inflatable seal which seals the chamber when the ceiling is moved to a new position. The ceiling and walls have a plurality of adjustable vents that direct fluid flow into the chamber. The doors of the apparatus are each constructed from an inner wall that is coupled to an outer wall by a plurality of floating joints. The floating joints allow the inner wall to contract or expand relative to the outer wall without creating a corresponding stress on the outer wall or the joints. To prevent an operator from prematurely opening a door after temperature cycling, the door locks are computer controlled so that the doors cannot be unlocked until the test chamber reaches an operator safe condition. The computer also prevents the ceiling from being adjusted until the front doors are opened and the table is pulled out of the chamber. One door also has an override button that allows the operator to open the door from the inside of the test chamber. Additionally, the testing apparatus includes a vibration table which can be pulled to a position outside of the test chamber. The table has a brake and shock absorbers that prevent an undesirable shock to the test parts when moving the table into and out of the test chamber.

Test chamber with a pull out table that has a brake and stops that limit the movement of the table

Testkammer mit veränderbarem volumen

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Variable volume test chamber

Test chamber with a pull out table that has a brake and stops that limit the movement of the table

Testkammer mit veränderbarem volumen