Infrared

Phlux Technology has announced 1550nm avalanche photodiode with a 3.5GHz cut-off. Part of its existing Aura range, the speed increase comes from a reduced die size, down to 30µm from 80µm (1.8GHz) or 200µm (700MHz), which drops capacitance to between 0.15 and 0.4pF. “This makes it ideal for high-speed, time-critical applications, such as those found in gigabit speed optical communications, ...

Rohm has introduced six miniature surface-mount top-view near-infrared LEDs. There are three packages: one measures 1 x 0.6mm and is only 0.2mm thick including a layer of encapsulation. Emission is 2.8mW/sr at 30mA. The other two measure 1.6 x 0.8mm and have either a lensed top (1.24mm tall, 5mW/sr at 20mA), or a flat top (1.06mm tall, 1.9mW/sr at 20mA) ...

Melexis has created a 32 x 24 pixel far-infra-red sensor array that can photograph the temperature of objects at between -40 and +260°C. Dubbed MLX90642, it comes in a 9.3mm diameter four-lead TO39 through-hole package in two versions: a squat (5.7mm tall) 110° x 75° wide-view type (BCA suffix) and a taller (11.9mm) 45° x 35° narrow-view version (BCB). The ...

Melexis has been delving into the intricacies of measuring the temperature of cooking pots on induction hobs, and has created an IC specifically for the job. “Customer requests initially sparked the development of the MLX90617,” said Melexis marketing manager Joris Roels. “However, the challenges of working with relatively small signals of infrared at short wavelengths made us question its feasibility.” ...

Lockheed Martin has completed its latest self-funded technology demonstration satellite. Its Tactical Satellite – or “TacSat” – will now be heading to orbit on a Firefly Aerospace Alpha rocket in 2025. TacSat is intended to demonstrate specialised sensing and communications capabilities on orbit, and includes the company’s first 5G.MIL payload. It is described as an intelligence, surveillance and reconnaissance spacecraft. ...

IR sensor specialist, Lynred, has announced it will acquire New Imaging Technologies. The Paris-based company designs and manufactures SWIR imaging sensors and modules based upon InGaAs focal plane arrays. It produces SWIR (shortwave IR) imaging modules and sensors, including large format shortwave sensors with a small pixel pitch. New Imaging Technologies also has a portfolio of wide dynamic range patents ...

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 ...