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Modular light meters

Modular light meters comprise one or more detector heads connected to a separate display device (optometer). Gigahertz-Optik produces an extensive range of detectors for photometric and radiometric applications that are readily configured with any of its single or multi-channel optometers. This modular approach enables customized solutions optimized for UV-visible-NIR applications.

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This modular range of broadband light meters and radiometers offer the possibility of individual configuration. Customers can choose from a wide selection of optometers, amplifiers, detector heads and accessories. In addition to its standard products, Gigahertz-Optik also offers customized solutions.

Step 1: As a first step we recommend the selection of a detector head. It is also possible to use several detector heads, which can be used interchangeably with single-channel meters or simultaneously with multi-channel meters. The selection criteria for a detector head include the required measurement quantity and range, its spectral function, and all other parameters relevant to the intended use.

Step 2: In the second step, accessories such as e.g. an integrating sphere can be selected. If the accessory changes the detector head’s measurand geometry and responsivity, an additional calibration for the detector head with accessories in the corresponding measurand must be selected.

Step 3: In the third step, the meter is selected. The planned use (e.g. mobile, stationary, manual or remote-controlled), the number of signal channels, the measurement  mode (CW, dose, pulse energy, temporal pulse progression) are all decision criteria.

Step 4: The connection of the measuring device for the detector head determines the connector type of the detector head. Gigahertz –Optik’s detectors are designed with connectors of the following three types:

  • Connector Type -1: Conventional BNC coaxial connector        
  • Connector Type -2: Calibration Data Connector with Eprom for storing the detectors data (type, calibrated responsivity) read by the connected meter.
  • Connector Type -4: Compact plug for detector heads with up to four photodiodes.

Step 5: To determine the measuring range of a selected configuration, two specifications of the selected detector head and meter are required.

The typical sensitivity (e.g. A / lx) and the max. permissible signal current of the detector head.

The minimum and maximum input signal of the measuring range of the meter.

Detection Limit (Noise Equivalent Power, N.E.P.) = Minimum input signal of the meter (A) / typical detector sensitivity (e.g., 0.1 pA / 3 nA / (mW / cm²) = 0.33 nW / cm². (*1) (*2)

Maximum reading = maximum input signal from the meter (A) / typical detector sensitivity (e.g., 20 μA / 3 nA / (mW / cm²) = 6.66 W / cm². (*3)                                                                                                                                           

Remarks:                                                                                                                                                   

(*1) The minimum measurable value of the broadband light meter or radiometer results from the desired signal-to-noise ratio (S / N). For a DIN Class A lux meter, e.g. a minimum S / N of 100 is given. For the detector head of the example calculation, an S / N of 100 would mean a minimum measureable value of 33 nW / cm². For applications in the limit area of optical radiation measurement technology, it is common to use lower S/N of 50 or even 10.                                                                                                                                                

(*2) In the case of very low detector current signals, movements of the cable between the detector head and the meter can lead to short, capacitive interference signals. In addition, strain effects on the plug of the detector head may increase the noise signal.                                                                                                                                         

(*3) The maximum calculated measurement value reflects the large dynamic range of semiconductor photodiodes. In practical application, however, the maximum measurable value is often limited by the temperature radiation contained in the measured optical radiation, which would mean unacceptable heating of the detector head.



Optometers are a particular type of digital multimeter (DMM) used for optical radiation measurements.  The particular light detector(s) connected to the optometer determine the wavelength range/spectral weighting function and displayed measurement units of the resulting light meter. Gigahertz-Optik produces a comprehensive selection of optometers to suit different measuring tasks and requirements.

Optometers
Model Photo Detector Inputs N.E.I. Noise equivalent input / integration time Max. signal input Gain ranges Integration time range Remarks
X1-1 X1 1 2020header 1 / 4 channels multiplexed 0.1 pA / 500 ms 200 µA 7

1 ms – 1 s

Best selling optometer for general applications. X1-Z03 option to connect up to four detectors.
P-9710-1 P 9710 1 0.1 pA / 100ms 0.005 pA / 5 s (*1) 2 mA 8

100 μs  5.9999 s

High quality portable optometer. Very large dynamic range. Lowest input offset for smallest measurement signals. Many measuring functions.
P-9710-2 P 9710 1 0.1 pA / 100ms 0.005 pA / 5 s (*1) 2 mA 8

100 μs  5.9999 s

Identical to the P-9710-1 but with 20 ms time constant in all amplifier gain ranges for measuring the pulse energy according to the streched-pulse method.
P-9710-4 P 9710 1 0.1 pA / 100ms 0.005 pA / 5 s (*1) 2 mA 8

100 μs  5.9999 s

Identical to the P-9710-2 but with additional trigger input for synchronizing the measurement of pulse energy.
P-2000-1 p2000 2 / multiplexed 0.1 pA / 100ms 0.005 pA / 5 s (*1) 2 mA 8

100 µs – 5.9999 s

Same as P-2000 but with 20 ms time constant in all amplifier gain ranges to measure the pulse energy according to the stretched-pulse method.
P-2000-2 p2000 2 / multiplexed 0.1 pA / 100ms 0.005 pA / 5 s (*1) 2 mA 8

100 µs – 5.9999 s

Same as P-2000 but with 20 ms time constant in all amplifier gain ranges to measure the pulse energy according to the stretched-pulse method.
P-9801-V01 p9801 8 0.1 pA / 100 ms 2 mA 8

1 ms – 999.999 s

High-quality 8-channel optometer with 8 separate signal amplifiers. Very large dynamic range. Lowest input offset for smallest measurement signals. Many measuring functions.
P-9801-V02 p9801 8 0.1 pA / 100 ms 2 mA 8

1 ms – 999.999 s

Same as P-9801-V01 but with 20 ms time constant in all amplifier gain ranges for measuring the pulse energy according to the strectched-pulse method.
P-9801-V03 p9801 8 0.1 pA / 100 µs 2 mA 8

1 ms – 999.999 s

Identical to the P-9801-V01 but with short time constants in all amplifier gain ranges for data logger applications.
P-9802 p9802 up to 2 x 18 / multiplexed 0.1 pA / 100 µs 200 µA 7

20 ms to 4 s (set by RS232 command)

Individually configurable optometer with up to 36 separate signal inputs.
TR-9600-1 TR9600 1 60 pA / 1 µs 2 mA 10 Fast data logger optometer with 1 μs time constant. Transient recorder with 12-bit ADC adjustable from 10 M samples/s to 1 k sample/s sampling rate. 4M bytes of memory.
TR-9600-2 TR9600 1 20 nA / 100 ns 600 µA 4 Fast data logger optometer with 100 ns time constant. Transient recorder with 12-bit ADC adjustable from 10 M samples / s - 1 k sample / s sampling rate. 4 M bytes of memory.
X1-RM x1 2 1 / 4 chanel multiplexed 0.1 pA / 500 ms 200 µA 7

1 ms – 1 s

Optometer module for installation in 19" systems. I / O, USB and RS485 interfaces.

Note: (*1) Offset measurement before each measurement recommended 


 

A detector head comprises one or more photodiodes each with an appropriate optical bandpass filter, diffuser, lens assembly, integrating sphere or other optical elements.  Detector heads are calibrated in the Gigahertz-Optik GmbH's calibration laboratory enabling the optometers to display results in the appropriate optical radiation measurement units.

Photometric detector heads
Detectors Model Photo Measured quantity Spectral function Typical responsivity Input optics / size FOV or Aperture Remarks
VL-3701 VL3701 3.64 Illuminance (lux) Photopic; f1 ≤ 3% 0.5 nA/lx Diffuser / 7mmØ Cosine; f2 ≤ 1.5% DIN 5032 Class A precision photometric. Suitable for measuring white LEDs
VL-3702 VL3701 1.64 Illuminance (lux) Photopic; f1 ≤ 6% 0.5 nA/lx Diffuser / 7mmØ Cosine; f2 ≤ 3% DIN 5032 Class B photometric
VL-3704 vl3704 Illuminance (lux) Photopic; f1 ≤ 5% 20 pA/lx Diffuser / 7mmØ Cosine; f2 ≤ 3% Typically used with X1 / P-9802 optometers
VL-3705 vl3705 Illuminance (lux) Scotopic; f1 ≤ 5% 0.3 nA/lx Diffusor / 7mmØ Cosine; f2 ≤ 3% DIN 5032 Class B scotopic specification
VL-3707 Messkopfnlx header neu3 Illuminance (lux) Photopic 12 nA / lx Diffuser Cosine For very low light level, from <100 μlx to > 80,000 lx
VL-3701 with SRT-M37-L1 vl3701s Luminance (cd/m²) Photopic 1.2 pA/(cd/m²) Lens / 22.4 mmØ 1° FOV divergent Spot luminance measurement of large illuminated areas
VL-3701 with SRT-M37-L2 vl3701s Luminance (cd/m²) Photopic 5 pA/(cd/m²) Lens / 22.4 mmØ 2° FOV divergent Spot luminance measurement of large illuminated areas
VL-3701 with SRT-M37-L5 vl3701s Luminance (cd/m²) Photopic 30 pA/(cd/m²) Lens / 22.4 mmØ 5° FOV divergent Spot luminance measurement of large illuminated areas
LDM-9901 ldm9901 Luminance (cd/m²) Photopic, f1 ≤ 5 % 25 pA/(cd/m²) Lens / 22 mm Ø 1.1° FOV
LDM-9811 with PD-16-VL ldm9811 Luminance (cd/m²) Photopic See detailed specification in the data sheet
ISD-5-VL isd5l luminous flux (lm) Photopic, f1 ≤ 5 % 25 nA/lm Sphere / 50 mmØ 12mmØ 2-Pi luminous flux measurement e.g. of endoscopes
ISD-10-VL ISD 10 VL.57 luminous flux (lm) Photopic, f1 ≤ 5 % 50 nA/lm Sphere / 100 mmØ 15mmØ
ISD-15P-VL ISD 15P VL.71 luminous flux (lm) Photopic, f1 ≤ 5 % 25 nA/lm Sphere / 150 mmØ 38.1 mm Ø

High Sensitivity broadband UV Irradiance Detectors
Model Image Measured quantity Spectral function Wavelength range (nm) Typical responsivity Input Optic / Size (mm) Remarks
UV-3701 uv1 Irradiance (W/m²) UV-A UV-A 315-400 nm 4 nA/(W/m²) Diffuser / 11mmØ CIE / DIN defined UV-A range
UV-3702 uv1 Irradiance (W/m²) UV-B UV-B 280-315 nm 1.7 nA/(W/m²) Diffuser / 11mmØ CIE / DIN defined UV-B range
UV-3703 uv1 Irradiance (W/m²) UV-C UV-C (200)250-280 nm 2 nA/(W/m²) Diffuser / 11mmØ CIE / DIN UV-C from 250 nm
UV-3710 uv10 Irradiance (W/m²) UV-A

UV-A (320 - 400) nm

7 nA/(W/m²) Diffuser / 11mmØ Alternative UV-A range (e.g. non-biological applications)
UV-3711 uv10 Irradiance (W/m²) UV-B UV-B 280-320 nm 3 nA/(W/m²) Diffuser / 11mmØ Alternative UV-B range (e.g. non-biological applications)
UV-3711-308 uv8 Irradiance (W/m²) UV-B 308nm UV-B 308 nm 3 nA/(W/m²) Diffuser / 11mmØ UV-B detector for Excimer sources
UV-3716 uv10 Irradiance (W/m²) UV-A UV-A 305-400 nm 10 nA/(W/m²) Diffuser / 11mmØ Alternative UV-A range
UV-3717 uv10 Irradiance (W/m²) UV-A, visible blind UV-A 325-400 nm 1 nA/(W/m²) Diffuser / 11mmØ Highest blocking of visible radiation
UV-3718 UV 3726 Irradiance (W/m²) Narrowband UV-C UV-C 254 nm 2 nA/(W/m²) Diffuser / 11mmØ High intensity UV-C 254nm sources
UV-3719 uv10 Irradiance (W/m²) Broadband UV

UV 250 nm - 400 nm

1.9 nA/(W/m²) Diffuser / 11mmØ Broadband UV radiation
UV-3720 UV 3726 Irradiance (W/m²) UV-BC

UV 240 nm - 320 nm

260 pA/(W/m²) Diffuser / 11mmØ UV-B and UV-C reponsivity
UV-3725 UV 3725 Irradiance (W/m²) Narrowband UV-C

UV-C 254 nm

2 nA/(W/m²) Diffuser / 11mmØ Wide dynamic range UV-C 254nm e.g. for air disinfection
UV-37 with SRT-M37-L-UV SRT M37 L Lens with SRT M45 Radiance (W/(m²sr)) Detector head dependent Front lenses for UV-37 detectors 22.4 mmØ; 1°, 2°, 5° or 10° FOV divergent

Broadband detectors for UV curing

High intensity/temperature UV-Blue Curing Detectors ( max temp + 100 °C. max irradiance 40 W/cm² )
Model Image Spectral function Wavelength range / nm Typical responsivity Input Optic / Size (mm) F.O.V. Remark
RCH-102 RCH detector UV-A Blue (320 - 460) nm Diffuser / 9mmØ Cosine For medium pressure UV lamps. Rigid light guide.
RCH-106 RCH detector Broadband UV (250 - 400) nm 0.3 nA/(mW/cm²) Diffuser / 9mmØ Cosine For medium pressure UV lamps. Rigid light guide.
RCH-108 RCH detector Narrowband UV-A 365 nm peak 0.3 nA/(mW/cm²) Diffuser / 9mmØ Cosine For medium pressure UV lamps. Rigid light guide.
RCH-109 RCH detector Narrowband Blue 430 nm peak 0.2 nA/(mW/cm²) Diffuser / 9mmØ Cosine For medium pressure UV lamps. Rigid light guide.
RCH-110 RCH detector UV-BC (240 - 320) nm 21pA/(mW/cm²) Diffuser / 9mmØ Cosine For medium pressure UV lamps. Rigid light guide.
RCH-111 RCH detector (350 - 400) nm Diffuser / 9mmØ Cosine For medium pressureUV lamps. Rigid light guide.
RCH-112 RCH detector Blue (400 - 450) nm 0.3 nA/(mW/cm²) Diffuser / 9mmØ Cosine For medium pressure UV lamps. Rigid light guide.
RCH-113 RCH detector UV-VIS (305 - 485) nm 0.3 nA/(mW/cm²) Diffuser / 9mmØ Cosine For medium pressure UV lamps. Rigid light guide.
RCH-116 RCH detector UV-A Blue (350 - 450) nm Diffuser / 9mmØ Cosine LED-Sources @ 365, 375, 385, 395, 405 & 430 nm. Rigid light guide.
RCH-002 rch0 header UV-A Blue (320 - 460) nm Diffuser / 9mmØ Cosine For medium pressure UV lamps. Flexible light guide.
RCH-006 rch0 header Broadband UV (250 - 400) nm 0.3 nA/(mW/cm²) Diffuser / 9mmØ Cosine For medium pressure UV lamps. Flexible light guide.
RCH-008 rch0 header Narrowband UV-A 365 nm peak 0.3 nA/(mW/cm²) Diffuser / 9mmØ Cosine For medium pressure UV lamps. Flexible light guide.
RCH-009 rch0 header Narrowband Blue 430 nm peak 0.2 nA/(mW/cm²) Diffuser / 9mmØ Cosine For medium pressure UV lamps. Flexible light guide.
RCH-010 rch0 header UV-BC (240 - 320) nm 21pA/(mW/cm²) Diffuser / 9mmØ Cosine For medium pressure UV lamps. Flexible light guide.
RCH-011 rch0 header (350 - 400) nm Diffuser / 9mmØ Cosine For medium pressure UV lamps. Flexible light guide.
RCH-012 rch0 header Blue (400 - 450) nm 0.3 nA/(mW/cm²) Diffuser / 9mmØ Cosine For medium pressure UV lamps. Flexible light guide.
RCH-013 rch0 header UV-VIS (305 - 485) nm 0.3 nA/(mW/cm²) Diffuser / 9mmØ Cosine For medium pressure UV lamps. Flexible light guide.

High sensitivity broadband Visible-NIR irradiance detectors
Model Image Measured quantity Spectral function Wavelength range / nm Typical responsivity Input Optic / Size (mm) Remark
RW-3701 rw3701 Irradiance (W/m²) Radiometric Blue

radiometric (400 - 500) nm

35 nA/(W/m²) Diffuser / 11mmØ
RW-3702 rw2 Irradiance (W/m²) Radiometric Red

radiometric (700 - 800) nm

400 nA/(W/m²) Diffuser / 11mmØ
RW-3703 rw3 Irradiance (W/m²) Radiometric VIS

radiometric (400 - 800) nm

1.5 nA/(W/m²) Diffuser / 11mmØ
RW-3704 rw4 Irradiance (W/m²) Radiometric NIR

radiometric (800 - 1000) nm

40 nA/(W/m²) Diffuser / 11mmØ
RW-3705 rw5 Irradiance (W/m²) Radiometric VISNIR

radiometric (400 - 1000) nm

10 nA/(W/m²) Diffuser / 11mmØ
RW-3708 rw8 Irradiance (W/m²) Radiometric NIR

radiometric (950 - 1700) nm

40 nA/(W/m²) Diffuser / 11mmØ
RW-37 with SRT-M37-L srt37 Radiance (W/(m²sr)) Detector head dependent Diffuser / 11mmØ Front lenses for RW-37 detectors

Multi-channel irradiance & illuminance detectors
Model Image Wavelength range / nm Typical responsivity Input Optic / Size (mm) Remark
XD-9501 xd9501

Ch 1: UV-A 315 nm - 400 nm
Ch 2: UV-B 280 nm - 315 nm

 

17nA/(W/m²) 2.5nA/(W/m²) Diffuser / 8mmØ UV Phototherapy, with 311nm calibration
XD-9502 xd95024

Ch 1: UV-A (315 - 400) nm

Ch 2: Photopic; f1 ≤ 6% (380 - 780) nm

Ch1: 10nA/(W/m²) Ch2: 0.05 nA/lx Diffuser / 8mmØ NDT testing UV-A + lux
XD-9503 xd9503

Ch 1: UV-A Peak 380 nm: (315 - 400) nm

Ch 2: UV-B Peak 311 nm: (280 - 315) nm

Ch1: 7nA/(W/m²) Ch2: nA/(W/m²) Diffuser / 8mmØ UV Phototherapy, TL01 and TL12 lamps
XD-9506 xd9506s

Ch 1: Actinic UV-AB (320 - 400) nm

Ch 2: Actinic UV-BC (250 - 320) nm

 

Ch1: 4µA/(W/m²) Ch2: 1.5nA/(W/m²) Diffuser / 8mmØ ICNIRP/ACGIH Actinic UV / IEC EN 62471
XD-9509 xd9509s

Ch 1: Erythema UV-Aeff (320 - 400) nm

Ch 2: Erythema UV-BCeff (250 - 320) nm

Ch1: 1µA/(W/m²) Ch2: 3.8nA/(W/m²) Diffuser / 8mmØ CIE Erythemal spectral function
XD-9510 xd9510s

Ch 1: Suv(λ) UV-AB (320 - 400) nm

Ch 2: Suv(λ) UV-BC (250 - 320) nm

Ch1: 4µA/(W/m²) Ch2: 1.5nA/(W/m²) Diffuser / 8mmØ Actinic UV DIN EN 12198

See also:  Light hazard meters                See also:  Photomedicine light meters


Laser power detector heads for the measurment of radiant flux (W)

Laser Power Detector Heads
Model Image Wavelength range / nm Typical responsivity Max. signal current Input Optic / Size (mm) Aperture Remarks
ISD-5-Si ISD 5 Si

(400 - 1100) nm

 

2.9E-3 A/W @ 630 nm

1 mA

Sphere / 50 mmØ 12.7 mm Ø
ISD-3P-Si isd3p

(400 - 1100) nm

8.87E-04 A/W @ 900 nm

1 mA

Sphere / 30 mmØ 5 mm Ø
ISD-3P-IGA isd3p

(800 - 1800) nm

0.17E-04 A/W @ 1300 nm

1 mA

Sphere / 30 mmØ 5 mm Ø
ISD-5P-Si ISD 5P Standard header

(400  - 1100) nm

2.5E-03 A/W @ 630 nm

1 mA

Sphere / 50 mmØ 12.7 mm Ø
ISD-5P-IGA ISD 5P Standard header

(800 - 1800) nm

1 mA

Sphere / 50 mmØ 12.7 mm Ø
ISD-10-Si ISD 10 Si.56

(400 - 1100) nm

1.6 mA/W @ 633 nm

1 mA

Sphere / 100 mmØ 15 mm Ø
ISD-15-Si ISD 15 Si.62

(400 - 1100) nm

60 µA/W @ 633 nm

1 mA

Sphere / 150 mmØ 38.1 mm Ø
ISD-30 isd30si3

1 mA

Sphere / 300 mmØ 100 mm Ø Two detectors Si and IGA
ISD-1.6-Si isd16 Sphere / 16 mmØ Pulse energy and pulse shape of ns pulses

Compact Modular Detectors
Model Image Spectral function Wavelength range / nm Typical responsivity Max. signal current Aperture Remarks
PD-1101 pd11 UV Si photodiode (250 -1100) nm 0.15 A/W @ 350 nm 0.5 A/W @ 900 nm 1 mA 3.6 mm x 3.6 mm For combining with integrating spheres, optics, filters and mechanical components
PD-1102 pd11 InGaAs photodiode (800 -1800) nm 0.85 A/W @ 1350 nm 0.95 A/W @ 1500 nm 1 mA 0.3 mm Ø For combining with integrating spheres, optics, filters and mechanical components
PD-1103 pd11 InGaAs photodiode (800 -1800) nm 0.85 A/W @ 1350 nm 0.95 A/W @ 1500 nm 1 mA 1 mm Ø
PD-1104 pd11 InGaAs photodiode (800 - 1800) nm 0.85 A/W @ 1350 nm 0.95 A/W @ 1500 nm 1 mA 3 mm Ø For combining with integrating spheres, optics, filters and mechanical components
PD-1105 pd11 SiC photodiode (215 - 360) nm 0.16 A/W @ 270 nm 50 µA 1.25 mm x 1.25 mm
PD-1109 pd11 GaP photodiode (250 - 550) nm 0.07 A/W @ 350 nm 100 µA 1.1 mm x 1.1 mm For combining with integrating spheres, optics, filters and mechanical components
PD-1112 pd11 GaAsP (UV) photodiode (200 - 680) nm 0.035 A/W @ 254 nm 0.17 A/W @ 633 nm 1 mA 2.3 mm x 2.3 mm For combining with integrating spheres, optics, filters and mechanical components
PD-1113 pd11 GaAsP (Vis) photodiode (400 - 760) nm 0.22 A/W @ 560 nm 0.29 A/W @ 633 nm 1 mA 2.3 mm x 2.3 mm For combining with integrating spheres, optics, filters and mechanical components
PD-1115 pd11 Si PIN photodiode (400 - 1050) nm 0.5 A/W @ 900 nm 1 mA 0.8 mm Ø For combining with integrating spheres, optics, filters and mechanical components
VL-1101 1101 Photopic; f1 ≤ 5% (380 - 780) nm 0.3 nA/lx 1 mA 1.1 mm Ø Modular photometric detector
TD-11VL01 td1101 1 Photopic; f1 ≤ 5% (380 - 780) nm 1 mA Temperature stabilised. Typically used as monitor detector on integrating spheres.

Modular Detectors
Model Image Spectral function Wavelength range / nm Typical responsivity Max. signal current Aperture Remarks
MD-37-GP6 md37u GaP photodiode (250 - 550) nm 0.07 A/W @ 350 nm 100 µA 2.5 mm x 2.5 mm
MD-37-GAP-UV md37u GaAsP (UV) photodiode (200 - 680) nm 0.035 A/W @ 254 nm 0.17 A/W @ 633 nm 100 µA 2.3 mm x2.3 mm
MD-37-GAP-VIS md37u GaAsP (Vis) photodiode (400 - 760) nm 0.22 A/W @ 560 nm 0.29 A/W @ 633 nm 1 mA 2.3 mm x2.3 mm
MD-37-IGA1 md37u InGaAs photodiode (800 - 1800) nm 0.85 A/W @ 1350 nm 0.95 A/W @ 1500 nm 1 mA 1 mm Ø
MD-37-IGA3 md37u InGaAs photodiode (800 - 1800) nm 0.85 A/W @ 1350 nm 0.95 A/W @ 1500 nm 1 mA 3 mm Ø
MD-37-SC1 md37u SiC photodiode (215 - 360) nm 0.16 A/W @ 270 nm 50 µA 1.25 mm x 1.25 mm
MD-37-SU13 md37u UV Si photodiode (250 - 1100) nm 0.15 A/W @ 350 nm 0.5 A/W @ 900 nm 1 mA 3.6 mm x 3.6 mm
MD-37-SU33 md37u UV Si photodiode (250 - 1100) nm 0.15 A/W @ 350 nm 0.5 A/W @ 900 nm 1 mA 5.8 mm x 5.8 mm
MD-37-SU33-VL md37u Photopic; f1 ≤ 6% (380 - 780) nm 1 mA
MD-37-SU100 md37u UV Si photodiode (250 - 1100) nm 0.15 A/W @ 350 nm 0.5 A/W @ 900 nm 1 mA 10 mm x 10 mm
MD-37-SU100-VL md37 Photopic; f1 ≤ 6% (380 - 780) nm 22 nA/lx 1 mA 9 mm x 9 mm
MD-37-SU100-VLS md37s Scotopic; f1 ≤ 6% (380 - 780) nm 22 nA/lx 1 mA 9 mm x 9 mm

Photosynthetic Active Radiation (PAR) detectors
Model Image Measured quantity Spectral function Wavelength range / nm Typical responsivity Input Optic / Size (mm) Remarks
PS-3701 ps3701 PAR µMol·m²·s PPFD 400 - 700 100 nA/(µMol·m²·s) 15 mm Ø
PS-3702 ps3702 PAR µMol·m²·s Phototropism (UV-A / Green) 320 - 500 2 nA/(µMol·m²·s) 2 nA/(µMol·m²·s)
PS-3703 ps3703 PAR µMol·m²·s Photomorphogenesis (Red / NIR) 590 -900 100 nA/(µMol·m²·s) 15 mm Ø

 

 

A modular range of add-on assemblies including lenses, diffusers, light shields, etc is available for the Gigahertz-Optik optical detector heads.

Detector accessories
Model Description
SRT-M45/37B Front adapter for detector heads with 37mm and 45mm diameter for attaching accessories with M30x1 thread.
SRT-M37L-1 Front optics with 1 ° FOV for use with front adapters SRT-M45 / 37B or MD-37 series devices.
SRT-M37L-2 Front optics with 2 ° FOV for use with front adapters SRT-M45 / 37B or MD-37 series devices.
SRT-M37L-5 Front optics with 5 ° FOV for use with front adapters SRT-M45 / 37B or MD-37 series devices.
SRT-M37L-10 Front optics with 10 ° FOV for use with front adapters SRT-M45 / 37B or MD-37 series devices.
SRT-M37L-1-UV UV optic with 1 ° FOV for use with SRT-M45 / 37B front adapters or MD-37 series devices.
SRT-M37L-2-UV UV optic with 2 ° FOV for use with SRT-M45 / 37B front adapters or MD-37 series devices.
SRT-M37L-5-UV UV optic with 5 ° FOV for use with SRT-M45 / 37B front adapters or MD-37 series devices.
SRT-M37L-10-UV UV optic with 10 ° FOV for use with SRT-M45 / 37B front adapters or MD-37 series devices.
MD-37-CUS MD-37 measuring head for individual assembly with photodiodes (not included). Includes housing, circuit board, connection cable, -1, -2 or -4 plug.
MD-37Z-H7 Front adapter for filters, diffusers, etc. Length 7 mm. M30x1 thread on both sides.
MD-37Z-C8 Front adapter with 8 mm aperture. M30x1 threaded.
MD-37Z-C11 Front adapter with 12mm aperture. M30x1 threaded.
MD-37Z-DR11 Front adapter with 11 mm diffuser. M30x1 threaded.
MD-37Z-FCF Front adapter with FC connector. M30x1 threaded.
SRT-M37-50 Front adapter 50mm long, M30x1 threaded on both ends
SRT-M37-60-L Attachment optics with 50 mm diameter. FOV according to specification. For use with SRT-M45 / 37B front adapters or MD-37 series probes.
SRT-M37Z01 Front adapter with stray light shield. M30x1 threaded.

 

 

In addition to its optometers Gigahertz-Optiks offers various transimpedance amplifiers with analog outputs and digital interfaces.  For use with optical detector heads.

Transimpedance Amplifiers
Model Image Detector Inputs N.E.I. Noise equivalent input / integration time Max signal input Gain ranges Slew rate (10% to 90%) Remarks
X1-PCBC x1 6 1 / 4 chanel multiplexed 0.1 pA / 100 ms 7 3 ms to 30 ms Module device for system builds
PLL-1701 PLL1701 web SMA / 1 t.b.c. 9 lin & 1 log 16 µs or 500 µs Fibre and current input, Lin. or Log current amplifier
P-9202-4 p9203 1 10 mV pk-pk

± 5 mA

8 1 µs - 3 µs Transimpedance amplifier
P-9202-5 p9203 1 4 mV pk-pk

± 5 mA

8 5 µs - 20 ms Transimpedance amplifier
P-9202-6 p9203 1 0.5 mV eff

± 1 mA

8 25 ms - 2.5 s Transimpedance amplifier