The Manual Inspection Booth (MIB-75™) in Standard Configuration is shown in Figure 1. The MIB-70™ and MIB-75™ are designed to provide a uniform illumination work envelope and consistent inspection environment in a volume small enough to place on a table of laboratory counter top. The metal enclosure is painted with white powder coat and is available in MIB-70™ and MIB-75™ styles. The MIB-70™ (not shown) provides a PLC and Operator Interface for lamp status and Pacer controls (includes RED and GREEN LED's on the side of the black / white inspection panel). The MIB-75™ (shown below) uses the same lighting control units as the MIB-70™ but does not have the PLC / Operator Interface. Instead the MIB-75™ provides LED indicators to inform the status the lighting system. The MIB-70™ and MIB-75™ are ergonomically designed and implement a patented balanced lighting system that generates an 8 Liter inspection volume in which light intensity is held within ±10%, thus reducing or eliminating inspection data variability. This large inspection volume allows the inspector to easily position samples in the chamber.
Figure 1. - MIB-75™ in Standard Configuration
The MIB-70™ and MIB-75™ implement a Patented parallel lighting system similar to the MIB-100™. The uniform lighting volume is produced by high output Biax lamps that use a folded optical path to increase the distance between lamps. The lamps are actually mounted on roller bear slides for easy positioning. The light intensity in the MIB-70™ or MIB-75™ can be adjusted by movement of the light mounting plates or the Master Intensity Control on the front panel or a combination of both. Move the lamps closer to the centerline and the intensity increases, and vice versa. The enclosure is constructed of 14 gauge steel with a gloss white powder coat exterior for long life. As an option the system can also be ordered in stainless steel. The Enclosure dimensions are 29.0" W x 24" D x 32.5" H, weighting approximately 175 lbs.
The MIB-70™ incorporates many of the features found in the MIB-100™ but in a smaller package. The MIB-70™ and MIB-75™ are essentially the upper half of an MIB-100™ without the legs and large armrest. The unique Phoenix Imaging Power Supplies (two of them) are mounted in an electrical enclosure mounted behind the Black / White background panel, access through the rear door of the main enclosure. The high frequency power supplies operate at 55 KHz and have active-loop feedback control to maintain precise luminous flux. The power supplies insure balanced lamp output over the entire range of control. There is a potentiometer mounted on the front of the enclosure that allows precision adjustment of the lighting level. In conjunction with the novel lamp separation adjustment the light intensity of the system can be adjusted between 2000 and 8000 Lux in the inspection volume. Higher lamp output is available but the uniformity in the inspection volume will not be ±10% from the center point.
The MIB-70™ uses a PLC interfaced to a touch screen display for control of many of the units functions, such as timers for inspector pacing, monitoring the stability of the power supplies, interface to audible and visual alarms and connection to footswitch. Several operational modes can be selected from the operator interface including Indexed Inspections (user input after each step of inspection process), Continuous Inspection (user input after a complete inspection cycle), Data Collection Mode (tally inspection results or not), White / Black Inspection or Monochrome Inspection (18% Gray Card or White Background Only), and many others. There are timers for each step of the inspection cycle that the supervisor is allow change, this is very important for consistent inspection results.
Figure 2. MIB-75™ Standard Configuration.
Rear View (left) and Front Center View (right).
The stainless steel armrest is height adjustable.
MIB-70™ and MIB-75™ are designed to fit on the standard depth laboratory bench top. The provide the same interior lighting quality as the MIB-100™. The MIB-70™ and MIB-75™ may be order in stainless steel clean room specification.
Power requirements must be specified at time of order for 110VAC or 220 VAC.
MIB-70™ (110-120 VAC version) requires ~4.5 A.
MIB-70™ (220-240 VAC version) requires ~2.25 A
MIB-75™ (110-220 VAC version) requires ~4.0 A
MIB-75™ (220-240 VAC version) requires ~2.0 A