Tag Archives: optical sensors

Hamamatsu Photonics has launched a TO-8 canned SPAD (single photon avalanche photodiode) with an in-built thermoelectric cooler. Called S16835, there are two models, which differ in the width* of their sensors: 54µm or 100µm. In standard operating conditions (25°C ambient, -20°C SPAD) typical dark currents are 15 or 60 count/s respectively (50 or 200 count/s max). Terminal capacitance and gain ...

University of Sheffield spin-out Phlux has announced its first product, a family of 1,550nm avalanche photodiodes. Called Aura, the infra-red devices are built using antimony alloy modified InGaAs. “The resulting sensors can be operated with APD gains up to 120, enabling even the smallest signals above the noise floor of a connected trans-impedance amplifier to be amplified,” according to the ...

Hamamatsu Photonics has launched a pair of linear CMOS image sensors with long thin pixels to increase sensitivity in spectrometers, without hampering resolution. “The elongated vertical pixel enables efficient light collection, even with shorter integration times,” according to the company. “Surpassing conventional CMOS in the VUV [vacuum ultra-violet, see graph] region, both sensors exhibit remarkable sensitivity from 140 to 1,000nm.” ...

Hamamatsu Photonics has introduced a UV model of its ‘micro’ spectrometer series. C16767MA is sensitive across 190 to 440nm with a typical resolution of 5.5nm (FWHM, so ±2.25nm to 50%). Update: scroll down for how it works, probably Vital statistics are 20.1 x 12.5 x 10.1mm and 5g. “For example, C16767MA can be mounted in water quality monitors, analysing the ...

German sensor company Sick has announced a pair of colour sensors. “The newly-developed flagship, CSS, leads the way with the ability to distinguish even the slightest nuances in shade,” according to the company. “Its capability to identify subtle differences in surface structures and textures opens up wide-ranging applications in electronics components manufacture.” Variants with eight-pin M12 connectors have four pins ...

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 ...

Pepperl+Fuchs has combined laser pulse ranging and piezoelectric 2D scanning to create 3D point clouds. Adopting mems scanner technology from the Fraunhofer Institute for Silicon Technology (Fraunhofer ISIT), the proof-of-concept, dubbed R3000, sweeps a 40° x 30° cone at ranges “from a few centimetres to several hundred meters with millimetre accuracy,” according to P+F. “Ambient light and other environmental influences ...

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, ...

Omron has created a colour sensor component “which enables monitoring of equipment, plant and industrial processes through detection of small colour changes,” it said. B5WC, as it is called, measures 8.4 x 40 x 15.9mm and detects the colour of objects or liquids 40mm away from its sensing face by reflection from an in-built white LED. Data output over an ...

Monash University as been looking into stacks of differing 2D materials with the Indian Institute of Technology Bombay, yesterday revealing tuneable photon absoption from perovskites layered with transition metal dichalcogenides. At the same time, the team revealed two other optically-active 2D parings: WSe2 – SnSe2, and black phosphorous with MoS2. All the pairings are held in stacks by van der ...