Tag Archives: infra-red

Senseeker has introduced a 1,280 x 1,024 version of its 10µm digital read-out IC (‘droic’) for short-wave infra-red imaging arrays, including quantum dot-based detector types. RD0131 as it will be known has a capacitive transimpedance amplifier (CTIA) front-end. There are three selectable gains, with well capacity of: 22k electrons (high-gain), 160ke- (medium) or 1.1Me- (low). In high gain, room temperature ...

Marktech had revealed the latest in its line of sensors which combine many LEDs of different wavelengths with a photodiode. MTMD142345PDT38 has five LEDs at 1.04, 1.2, 1.3, 1.46 and 1.55μm, plus an InGaAs photodiode sensitive across 600 – 1,750nm, all individually addressable and hermetically sealed into a TO-5 metal can. This short-wave infra-red (SWIR) combinations is “ideal for infrared ...

Rohm has developed a 120W 905nm infra-red laser diode for lidar. Called RLD90QZW8, “original technology allows Rohm to reduce the temperature dependence of the laser wavelength to just Δ11.6nm – 0.10nm/°C”, said the company. “This makes it possible to narrow the bandpass filter while extending the detection range.” 120W is at 38A where the diode drops 13V (50ns pulses, 0.05% ...

Vishay has released an infra-red receiver designed to be used outdoors in light barriers and reflective presence detectors. TSSP93038 will work up to 1m reflectively or 11m in a light curtain when irradiated at 1.3mW/m2. The ambient light rejection strategy comes in two parts: the first is that the device’s peak sensitivity is to light at 940nm, and the second ...

Step aside precision-ground solid germanium, as Flinders University has discovered an injection-mouldable plastic that can be used for the lenses of thermal imaging cameras. OK, OK, it might not be a replacement at the high-end, but ’67-poly(S-r-CPD)’ is black to visible light, and passes both medium and long-wave infra-red. “It has the potential to expand the use of thermal imaging ...

Rohm is to put short wavelength infra-red LEDs and photo diodes in 1.6 x 0.8mm (1608) packages for material detection in portable, wearable and hearable devices. “As SWIR is used to detect the presence of substances and their constituent components by taking advantage of characteristics of water, ice, gases or glucose that absorb specific wavelengths, target applications include light sources ...

As alternatives to through-hole TO-39 or TO-18 packaged PIN diodes, Marktech Optoelectronics has announced hermetic surface-mount InGaAs PIN diodes sensitive to 1.7 or 2.6μm, protected against water vapour, oxygen and other gaseous contaminants. “The Atlas brand package is designed to deliver performance and reliability for applications including aerospace, medical, defence, wearables and industrial,” according to New York-based Marktech. “In addition, ...

Eindhoven University of Technology has made a photodiode with such low noise (<10-6mA/cm2 dark current) and wide dynamic range (<150dB), that it can optically detect a heartbeat at a distance of 1.3m. TU Eindhoven researcher Riccardo Ollearo having the pulse in his finger measured remotely by thin-film photodiode Through an unexpected photo-multiplier effect, it can achieve a photo-electron yield above ...

Thorlabs has announced a holographic grating spectrometer that spans 810 to 965 nm with sub-nanometre resolution. HG10 is fibre-based acquires at up to 130,000 scan/s, enabled by the USB 3.0 interface. External synchronisation is via a TTL-level trigger input. Inside, the spectrometer is based on the company’s Ganymede series of optical coherence tomography imagers. “The development of the HG10 was ...

Warrington-based quantum dot maker Quantum Science has become part of a government-funded Knowledge Transfer Partnership with the University of Glasgow, intended to improve infra-red sensor fabrication, testing and manufacturing. The company makes Pb-inclusive and Pb-free quantum-dots that can be used in infra-red sensors, with sensitivity tuneable across 800nm to 2.4μm. They are said to have excellent stability in air, in ...