In addition to our standard range, custom devices can be designed and manufactured to meet your specific functional or cost requirements. This includes specialist filter design, either directly onto the silicon or on to glass/plastic substrates.

Applications
We have successfully designed devices that are used in a wide
range of applications including:

• Exhaust gas monitoring
• Document security
• Industrial process control
• Radiation detection and environmental (gas) monitoring
• Medical analysis equipment
• Ride height sensing
• Linear encoder devices
• Vending machine mixture control
• Helicopter rotor vibration monitoring
• Tank turret control

Removing discrete packages from new or existing designs and replacing them with a chip-on-board solution is often the easiest way to reduce cost, size and time of assembly.

Services:
• PCB population
• Clean room environment
• Solder/epoxy die-attach of CCD/CMOS arrays, photodiodes,    LEDs and Lasers - all onto a variety of substrates
• Heavy and fine-wire bond
• Encapsulation of photodiodes, LEDs and arrays (automated    and manual) including lens forming
• Plasma cleaning
• UV oven and spot-lamp cure
• Module potting (for harsh environments)
• Hermetic lid seal
• X-Ray inspection
• Optical alignment

Optical system design projects are managed by Semelab engineers from initial concept through to volume manufacture. Technical feasibility studies are undertaken initially to explore all possible design options, and enable the customer to select the most suitable design for the application. Prototypes can then be built and moved into design for manufacture.

Recent designs include:
• Head-up-display (HUD) system
• Linear encoder module for harsh environments
• Ride-height sensor
• Tyre temperature sensor

Radiation detectors utilise silicon photodiode technology but with the addition of a crystal or membrane of scintillator material. Scintillators convert the higher energy x-rays into the visible spectrum, which can then be detected by a photodiode.

Custom detectors
• Designed to suit customer-specific applications
• Excellent response to Gamma, Beta and X-ray radiation
• Design, test and manufacture of complementary ASICS for use with your radiation detection system

Semelab are the co-ordinator for a diamond-based EU collaborative project. The project involves a number of leading manufacturers and research organisations which specialise in this area.

Main aims of Project
To develop a Chemical Vapor Deposition Diamond Array-based
Radiation Dosimeter System.
This will improve the level of accuracy and performance required
by Intensity-modulated radiation therapy (IMRT).

Key Features
• Radiation hardness
• Chemical resistance
• High temperature operation

The SMPMOD.LDM DFB laser module is packaged in an industry-standard 14-pin butterfly package. The integrated thermoelectric cooler and thermistor are used to temperature stabilize and tune the laser to the desired wavelength.

Features
• Typical 7mW output power
• Peltier tuned DFB lasers
• 14-pin butterfly package
• Custom package design option
• Wavelength ranging from 1nm to 2nm
• Side Mode Suppression > 30dB
• Integrated gas reference cell
• Focusing/collimating lens
• Internal TE-cooler
• Fully characterised laser and reference cell.
• Peak wavelength ±1nm tolerance

High power LED’s are a new and exciting technology for generating light.
Semelab offers high quality light modules / light engines to suit custom and standard applications.

Benefits
• Provides even, reliable, low power-consumption illumination
• Monochromatic and has little or zero infra-red to harm or heat    whilst operating
• Optics can be greatly simplified
• High degree of design flexibility with reduced costs

Applications
• Automotive lighting clusters
• Emergency lighting
• Signage
• Decorative lighting