How do you think the new GigE standards will influence the machine vision industry?
Respond or ask your question now!
With advances in machine vision, commercial applications and the world of microscopy, illumination needs have changed. Manufacturers have responded by offering illumination solutions for diverse applications as well as support products to achieve superior results.
The Rapp OptoElectronic JML-C2 Flash Unit from ASI / Applied Scientific Instrumentation (Eugene, Ore.) is a pulsed Xenon light source producing an intense flash of UV light for the photolysis of caged compounds in the specimen plane of a microscope. The single case configuration permits easy operation, easy alignment by the user, and easy lamp replacement. The unit offers a high efficiency flash bulb with up to 220 J/pulse, UV anti-reflection coated quartz optics, and a 0.2 - 8 Hz repetition rate. The unit includes a 1.5-meter quartz light guide, a built-in UV filter, and slots for optical filters, as well as an LED illumination tool for specimen alignment and a calibrated photodiode for lamp adjustment. The system can be triggered externally or manually at the front panel. The Rapp JML-C2 is a powerful tool for use in science and industry in initiating photochemical reactions or for illumination. www.ASI
Despite their inherent advantages over traditional mercury-based light sources, until now LEDs have not been bright enough to be used as the light source of fluorescence microscopes. Now, because of the development of new LED array technology, the CoolLED (Andover, Hampshire, UK) PrecisExcite is the first commercially viable unit of its kind and is designed to work with all types of fluorescence microscopes.LEDs have many advantages over conventional light sources. They produce an immediate and consistent light source over a narrow bandwidth, the brightness can be easily controlled, no warm-up period is required, they are significantly more efficient, need no maintenance and use no consumables. In addition, they avoid the health and environmental hazards associated with mercury lamps and, as they operate from a low voltage supply, are inherently safe.Cost of ownership is very low compared with mercury lamps. The PrecisExcite has a “light-on” lifetime of more than 10,000 hours whereas mercury lamps have a comparatively short life that is further reduced each time it is switched on and off. In addition, the microscope may have to be recalibrated after the bulb has been changed, adding to the operating cost.The PrecisExcite produces three separate selectable wavelengths that match the most commonly used fluorescence dyes and a great advantage to the microscopist is that the wavelength is highly repeatable, does not change with ageing and has a fast switching rate and so helps to avoid photo bleaching.Mercury lamps produce a wide spectrum of light, requiring a filter system to block out unwanted light and isolate the required wavelength. Because of the narrow bandwidth of the LED source there is no need for filters, which inevitably let through some unwanted light, thus improving performance in terms of signal to noise ratio. www.coolled.com
Edmund Optics (Barrington, N.J.) ChamelEOS™ is a user-friendly LED-based fiber optic illumination source for industrial and R&D applications. Based on EO’s EOS™ technology, ChamelEOS™ offers all the benefits of LED illumination, including independently controllable red, green, and blue color channels, strobing and overdriving functionality, and cold illumination, coupling the energy into an optical fiber for delivery to the illumination site.
ChamelEOS™ offers the user dynamic light management. All channels can be operated independently or simultaneously, and the source can be run continuously or strobed. In its analog input mode, voltages presented at three input channels directly control the illumination level for each LED, generating a full range of color values and intensity levels. A triggering option allows users to generate light pulses from each channel by applying a trigger pulse to the input channels. A trigger delay of 100µs to 50ms, pulse duration of 100µs to 50ms, and peak current for each channel is independently user settable.