Optics for Sensors and Detectors

Download Components for Optics for Sensors and Detectors Datasheet (PDF, 421 KB)


Sensors as well as varios systems on their base are widly used and discover new and new areas for applciations on almost all aspects of human activity. Optical IR-sensors and detectors belong to a special niche since are allowed to control and manage the processes which take place at room and much low temperatures. Majority of the devices here are remote-acting and non-contact.

Application of Wien's law to human body emission results in a peak wavelength of

For this reason, thermal imaging devices for human subjects are most sensitive in the 7‑14um range. For monitoring and temperature measurements of higher heated environments the wavelength range 3-5um is used.


Practically all organic and inorganic compounds have the unique feature that they more or less good absorb at the diapason of  2‑15um. This cause the wide products line of IR-sensors and IR-detectors.

Tydex introduces various passive optics for the discussed topic. Hereunder are some examples of the optical elements demonstrating the range of our products:
1. Silicon meniscus lenses for 3-5 um IR detectors (pyrometers)
2. Germanium windows for 8-12 um IR imagers
3. Germanium meniscus lenses for 8-10 um IR imagers
4. Protective domes for pyranometers
5. Filters for pyrgeometers
6. Sapphire windows for under-water sensors
7. Silicon bullet-lenses for 3-5 um IR immersion LED's and photodiodes
8. CaF2 bullet-lenses for 3-5 um IR immersion LED's and photodiodes
9. ZnSe lenses for 10.6 um lasers 
10. ZnSe  beamsplitters
11. ZnSe windows for IR detectors, etc. 
12. Teflon IR polarizers

Additional information is available at  Frontal Optics for Ultimate Applications.

1. Si meniscus lenses for 3-5 um IR detectors (pyrometers)

Application: production of concrete, steel, glasses, etc.

Si meniscus lenses for 3-5 um IR detectors (pyrometers)
Specification:
Material Si
Type meniscus lens, plano-convex lens
Diameter, mm 29 (+0/-0.2)
Central thickness, mm 4 (+/-0.2)
EFL tolerance, % +/-2
Surface quality, scr/dig 60/40
Surface figure, fringes N<=5, deltaN<=1 @633nm
AR coating (BBAR/BBAR type),
R @3-5 um, %
<1 (see the curve below)

Transmission spectra of Si meniscus lens

2. Ge window for 8-12 um IR imager

Application: to be installed at helicopter for long-distanse monitoring of forest fire

Germanium windows for 8-12 um IR imager
Specification:
Material Ge
Type plano-plano window
Diameter, mm 120 (+0/-0.2)
Thickness, mm 4 (+/-0.2)
Surface quality, scr/dig 60/40
Surface figure, fringes N<=5, delta N<=1 @633nm
AR coating (DLC/BBAR type),
R @8-12um, %
<5 (see the curve below)

Transmission spectra of Germanium windows for 8-12 um IR imager

3. Ge window for 8-12 um IR imager

Application: sea-based system of 360 deg.-panoramic view

Germanium meniscus lenses for 8-10 um IR imager
Specification:

Material Ge
Type meniscus lens
Diameter, mm 105 (+0/-0.2)
Central thickness, mm 8 (+/-0.2)
EFL tolerance, % +/-2
Surface quality, scr/dig 60/40
Surface figure, fringes N<=5, delta N<=1 @633nm
AR coating (DLC/BBAR type),
R @8-10 um, %
<5 (see the curve below)

Transmission spectra of Germanium meniscus lenses for 8-10 um IR imager

4. Protective dome for pyranometer

Application: meteorology, climatology, environmental monitoring at green-houses and open fields

Protective domes for pyranometers
Specification:

Material Glass, quarts
Type dome
Diameter, mm 32 (+0/-0.2)
Central thickness, mm 3.7 (+/-0.2)
Surface quality, scr/dig 80/50

5. Filter for pyrgeometer

Application: measuring an effective atmospheric IR radiation spectrum over wide spectral range (4.5-45 um)

Filter for pyrgeometers
Specification:

Material FZ-Si
Type plano-plano window, meniscus lens
Diameter, mm 31.8  (+0/-0.2)
Thickness, mm 1 (+/-0.1)
Surface quality, scr/dig 40/20
AR coating (DLC/solar blind type) (see the curve below)

Filter for pyrgeometers

 

6. Sapphire window for under-water sensor

Application - to be installed at bathyscaphe to monitor continental shelf, ship's bottom, etc

Sapphire window for under-water sensors
Specification:

Material Sapphire
Type plano-plano window
Diameter, mm 77 (+0/-0.2)
Thickness, mm 6.0 (+/-0.2)
Surface quality, scr/dig 60/40
Surface figure, fringes N<=5, delta  N<=1 @633nm

7. Si bullet-lens for 3-5 um IR immersion LED's and photodiode

Application: to be used as lighter emitter

Si bullet-lens
Specification:

Material Si
Type bullet-lens
Diameter, mm 3.5  (+0/-0.4)
Central thickness, mm 3.21  (+/-0.05)
Surface quality, scr/dig 40/20
Surface figure, fringes N<=5,
delta N<=1 @633nm
AR coating (one side BBAR @3-5 um) (see the curve below)

Transmission spectra of Si bullet-lens for 3-5 um IR immersion LED's and photodiodes

8. CaF2 bullet-lens for 3-5 um IR immersion LED's and photodiode

Application: environmental monitoring

CaF2 bullet-lens
Specification:

Material CaF2
Type bi-convex lens
Diameter, mm 11 (+0/-0.1)
Central thickness, mm 5.3 (+/-0.2)
EFL @4.25um, mm 12.5
Surface quality, scr/dig 80/50
Surface figure, fringes N<=2, delta  N<=1 @633nm

9. ZnSe lens for 10.6 um laser

Application: laser industry, CO2- and CO-detectors, medicine

ZnSe lens
Specification:

Material CVD-ZnSe
Type plano-convex lens
Diameter, mm 12.7 (+0/-0.2)
Central thickness, mm 2.0  (+/-0.2)
EFL tolerance, % +/-2
Surface quality, scr/dig 40/20
Surface figure, fringes N<=1,
delta N<=0.5 @633nm
AR coating (AR/AR type), R @10.6 um, % <0.5 (see the curve below)

Transmission spectra of ZnSe lens for 10.6 um laser

10. ZnSe beamsplitter

Application: monitoring of air quality, nitrogen fixation, fruit storage, mycology, medicine

ZnSe lens beamsplitter
Specification:

Material CVD-ZnSe
Type plano-plano window
Diameter, mm 25 (+0/-0.2)
Thickness, mm 4 (+/-0.2)
Surface quality, scr/dig 40/20
Surface figure, fringes N<=5, delta  N<=1 @633nm
Coating (see the curve below)
 -S1: AR @10.3 um
 -S2: R=90%+/-5% @10.3um

Transmission spectra of ZnSe lens beamsplitter

11. ZnSe window for IR detector, etc.

Application: monitoring of air quality, nitrogen fixation, fruit storage, mycology, medicine.

ZnSe window for IR detectors
Specification:

Material CVD-ZnSe
Type plano-plano window
Diameter, mm 12.7 (+0/-0.2)
Thickness, mm 3.0  (+/-0.2)
Surface quality, scr/dig 60/40
Surface figure, fringes N<=1,
deltaN<=0.5 @633nm
AR coating (AR/AR type), R @ 4.5um, % (see the curve below)

Transmission spectra of ZnSe window for IR detectors

12. Teflon IR polarizer

Application: methane leak detectors

Teflon IR polarizer
Specification:

Material Teflon
Diameter, mm 12.7 (+0/-0.2)
Transmission curve See the chapter IR Polarizers

We are pleased to emphasize that the list of similar components is permanently replenished and we are ready to considerate yuor new RFQ's.

For price quotation and delivery please fill in our request form.