Contact

Laser Components Germany GmbH
Werner-von-Siemens-Str. 15
82140 Olching / Germany

Phone: +49 (0)8142 / 28 64-0
Fax: +49 (0)8142 / 28 64-11

E-Mail:info@lasercomponents.com

Merci de nous contacter. Nous sommes à votre disposition!

(Les champs avec * sont obligatoires)
Contacter par:
  • English
  • Deutsch
  • Français

Bulletin d'information

La lecture de notre bulletin d'information, Photonics News, vous maintient à jour. Toutes les nouvelles technologiques et nouveautés produits, aussi bien que l’information sur l’actualité de LASER COMPONENTS sont disponibles sous cette forme concentrée. Souscrivez aujourd'hui - gratuitement !

Five New Bandpass Filters for Pyroelectric Detectors

Photonics News Numéro 80

Well done! It has never been so easy to equip your detector for different gas measurements


D80-133

Bandpass filters for IR detectors: With five new products, we offer the largest range of standard products worldwide so that you may measure whatever you want! There are seventeen different filters in total.
IR detectors are polychromatic. This means that they not only detect a wavelength but a whole bandwidth, which ranges from 0.1 µm to 100 µm in pyroelectric detectors.

These bandpass filters are either directly mounted to the fixed cap of the detector or are available as a separate cap that can be attached to an existing pyroelectric detector. We will introduce our five new filters here:

Filter B: Reference Filter
A reference filter should not have gas absorption bands. The tested and proven H filter generally does not have these bands, unless there is SO2 in the gas mixture. In this case, use the B filter:
Lambdapeak = 3.86 µm, FWHM = 90 nm

Filter A: CO2 Filter
We have worked for over a year with a manufacturer of CO2 sensors to find the ideal CO2 filter with the best signal possible and a simple linearization for regulation of air-conditioning systems. The following specification has been proven to be the best:
Lambdapeak = 4.265 µm, FWHM = 110 nm

Filter M: Water Vapor Filter
Water vapor is found in almost any mixture, and it often leads to an interfering background. Attempts to measure this with a 2.94 µm filter, for example, are faced with the problem of CO2 cross-sensitivity. The M filter has been proven to be reliable in practical applications:
Lambdapeak = 5.78 µm, FWHM = 180 nm

Filter S: Methane Filter
Methane has generally always been measured at 3.33 µm; however, this is not very specific. To improve upon this, a correct spectrum can be measured or laser methods used. Alternatively, an S filter can be used that operates at a longer-wave band:
Lambdapeak = 7.91 µm, FWHM = 160 nm

Filter O: Alcohol Filter
Measuring the alcohol level is becoming more and more popular, which just screams for a standard filter:
Lambdapeak = 9.50 µm, FWHM = 450 nm


Datasheet:

Further product information:
Filtres pour Détecteurs Pyroélectriques

Contact:

Contact Person:    Joe Kunsch
Company:    Laser Components Germany GmbH
Address:    Werner-von-Siemens-Str. 15
ZIP / City:    82140 Olching
Phone:    +49 (0) 8142 2864-28
Fax:    +49 (0) 8142 2864-11
Email:    johannes.kunsch@lasercomponents.com
 

Filter Cap for Pyroelectric Detectors


Abonnez-vous à la dernière Photonics News

Si vous souhaitez recevoir régulièrement des mises à jour et des informations sur nos produits et services, abonnez-vous gratuitement à notre Photonics News Newsletter et restez informé !

Abonnez-vous

Votre contact

Laura Dreßler

+49 (0) 8142 2864-135