ILEX Speedcomputer Arc Lamp Exposure Controller CCD Shutter Vacuum Control SSR

ILEX Speedcomputer Arc Lamp Exposure Controller CCD Shutter Vacuum Control SSR

This is a custom-built rackmount/benchtop control enclosure built around the ILEX Speedcomputer, manufactured by ILEX Optical Co. Inc. of Rochester, NY. The enclosure integrates arc lamp power switching, CCD shutter control, and dual vacuum monitoring and control — functions consistent with a photolithographic contact printer, mask aligner, or scientific arc lamp exposure system. The front panel provides five status indicators (AC Power, Arc Power, CCD Shutter, Mask Vacuum, Sample Vacuum) and a main rocker power switch. The ILEX Speedcomputer panel on the side provides shutter timing control via an actuate dial (No. 1, 2 & 3) and toggle switch.

Specifications & What's Included

• Brand: ILEX Optical Co. Inc. (ILEX Speedcomputer), Rochester, NY, USA
• Front panel indicators: AC Power, Arc Power, CCD Shutter, Mask Vacuum, Sample Vacuum (LED/lamp indicators)
• ILEX Speedcomputer side panel: Shutter Open button, toggle switch B, Actuate dial (No. 1, 2 & 3, graduated 1–125)
• Power Supply 1: ACDC Electronic PS 12N5 — 12V DC output at 5A
• Power Supply 2: ACDC Electronic PS 5N9-1 — 5V DC output at 9A
• I/O Boards: Two boards, part number 62200 9235/B, with ribbon cable and wiring harness interconnects
• Solid-State Relay: Crydom D2425 — 240V AC output, 25A, 3–32V DC input (UL/CSA listed)
• EMI Filter: Corcom 10VK7 (F7145) — 10A, 125/250V, 50–60Hz (UL listed, made in Mexico)
• Rear panel: Isolated-ground duplex AC outlet, IEC C14 power inlet, multiple circular multi-pin connectors (J4, J5, J6, J7, J9, J10), dual DB-style connectors (J3)
• Enclosure: Black metal benchtop/rackmount chassis with ventilated top panel and rack ears

Applications

The ILEX Speedcomputer was a precision shutter timing and exposure control device produced by ILEX Optical Co. Inc., a Rochester, NY firm historically associated with photographic lens shutters and optical instrumentation. In its original form, the Speedcomputer provided timed actuation control for photographic or scientific shutters — functions well-suited to arc lamp exposure systems used in photolithography, PCB contact printing, and mask aligner setups. This enclosure expands that core timing function into a more complete system controller: the arc power switching, CCD shutter control, and dual vacuum monitoring (mask vacuum and sample vacuum) are characteristic of a contact mask printer or UV/arc lamp exposure station used in semiconductor fabrication, microelectronics research, or scientific imaging labs. These systems typically controlled the sequence of vacuum hold-down (to clamp the mask and substrate together), shutter opening, arc lamp firing, and shutter close — all managed through a central control box like this one. Equipment of this type was common in university clean rooms, research labs, and small-scale semiconductor or PCB production environments from the 1970s through the 1990s.