Interactive Measurements and Tailored Displays for Optical ...
Optical measurements
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Transcript of Optical measurements
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Andrei Tsiboulia
Optical Measurements -Development & Design
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Schlieren Method for Studying Gas Flow
Condenser mirror projects the bulb filament onto the entrance pupil of the Schlieren system.
The first (collimating) doublet has a Ronci Rolling in its front focal plane and sends collimated light through the gas flow area .
The second (focusing) doublet focuses light onto the second Ronci Rolling, which is the negative of the first one.
The second doublet and a camera lens form the image of the gas flow area on a screen.
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Mini Spectrometer Optical System
Few optical systems for mini spectrometers were designed.
Here is one of them imported from Opticad.
Astigmatism of the system is reduced due to a two-layer optical design.
Light beam from a SM fiber is collimated by a doublet.
Diffraction grating disperses it.
Dispersed light is focused by a mirror onto a CCD array.
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Another Mini Spectrometer Optical System
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Optical Test Lab organized for R&D
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Spectral Measurements
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Spectral Measurements 2
Figure 7. Large window or filter (left, on the 3D stage) and small notch filter (right, in the notch filter holder) installed in front of the spectrometer
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Temperature Spectral Measurements
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Lens / Window Resolution Test
3D
stageFigure 1. The Test Setup
USAF
target
Lens
Microscope
Target imageWindow (optional)
LED panel, white, 850 & 940 nm
HD camera
Diffusive films
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Lens / Window Resolution Test 2
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Correlated color temperature measurements
Figure 4. UV Cromatisty Diagram for LED
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VCSEL Illumination
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VCSEL Illumination 2
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VCSEL Illumination 3
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Camera Dynamic Range Measurements
CUT
Lamp
Enclosure
Window
Diffuser
VDF
Figure 2. Test Concept
Special Illuminator
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Camera Dynamic Range Measurements 2
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Backscatter diagram measurement
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Backscatter diagram measurement