Lung function tester optical filters are specialized filters used in devices like spirometers and pulmonary function analyzers to improve the accuracy of respiratory measurements. These filters play a critical role in isolating or detecting specific wavelengths of light, particularly in applications where light-based detection of gas concentrations or biomarkers is involved.
Model: Optical Filters
Specifications: Customized
Material: Optical glass
Solution
The pulmonary function tester consists of a host, a flow sensor, and a nose clip. It is suitable for respiratory medicine, chest medicine, occupational disease prevention and control institutions, hospital physical examinations, outpatient clinics, homes and other environments. It is used for pulmonary function testing and tracking lung health. It is a lightweight and portable pulmonary function testing instrument. The pulmonary function tester is a medical device used to measure the amount of air inhaled and exhaled by the lungs. It can perform pulmonary function tests and track lung health. It can measure common pulmonary function test parameters including FVC, FEV1, FEV1/FVC, etc.
Solution
Mid-infrared bandpass filter：BP4.26μm BP4.65μm Bandwidth 200-300nm Used for single-channel extraction of carbon monoxide (4.65μm) or carbon dioxide (4.26μm)
Mid-infrared dichroic beam splitter：45° incident 4.65μm through 4.26μm Used to separate carbon monoxide (4.65μm) and carbon dioxide (4.26μm)
Mid-IR Negative Filter：2800-3500nm@Tave>80% 3800-4400nm@Tabs<0.5% 4450nm@Tabs<1.5% 4600-4850nm@Tave>80% 4600nm@Tabs>60%
Used to identify methane (3.14um), carbon monoxide (4.65um) and filter out carbon dioxide (4.26um) at the same time
Transmittance wavelength characteristics (reference data)
Application scenarios
Gas Analysis：Detect gases such as oxygen (O₂), carbon dioxide (CO₂), and nitric oxide (NO) in exhaled air.Optical filters help isolate the wavelengths associated
Photometric Measurements：Filters are used in photometric methods for measuring lung parameters like tidal volume, air.
Noise Reduction：Minimize interference from unwanted wavelengths, improving signal-to-noise
