Dr. SPECKLE Model:SM01VS09
（Dedicated software M-Speckle）
| Speckle evaluation tool for laser display development |
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Speckle is the random laser interference pattern formed on human eye retina. Speckle noise may degrade the image quality of laser displays seriously. Accurate evaluation of speckle noise is the first step to reduce speckle noise. Features
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＜Specification＞
| Speckle measurement | Measurement value | Speckle contrast CS = σ / Ibar (σ is standard deviation and Ibar is average intensity of captured image) |
| Range | 0.01 ~ 1.00 (Measurement resolution: Significant to two decimal places) | |
| Measurement conditions | Luminous Flux | 10 lm (lumens) or over (monochromatic) *Assuming a scanning type laser projector |
| Observation distance L | 300 mm to 1000mm (TBD) | |
| Observed area on screen | 13 mm square (L = 300 mm) ~ 40 mm square (L = 1000 mm) *Imaging area is 300×300 pixels. |
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| Wavelength | Visual light region | |
| Projection image | Light beam with spatial uniform and temporally static image | |
| Camera | CCD device | Sony image sensor with external cooling system, 1.4 million pixels (1360×1024) |
| Imager size | 8.8 mm×6.45 mm (pixel size 6.45 μm×6.45 μm) | |
| Shutter | Electronic shutter | |
| Cooling method | Peltier cooling (Air cooling, 0 degrees C) | |
| A/D Conversion | 16-bit (65,536 gradation) | |
| Color | Black & White | |
| Lens | Nikon Single focal length lens f 50mm/F1.4 | |
| External trigger (Optional) | Synchronous photography by a TTL CMOS 5V falling edge signal | |
| Aperture size | Pinhole diameter: φ0.8 mm, φ1.0 mm, φ1.2 mm, φ1.5 mm (selectable) | |
| Filter wheel (Optional) | Filter type: Red, Green, Blue, ND (OD: 2.0) (selectable) | |
| Consumption | 100W （without computer） | |
| Outer dimensions and weight | Speckle meas. unit | 257 (L)×160 (W)×213 (H) mm, 4.8 kg (5.2kg with the filter wheel control) |
| Power supply box | 248 (L) ×180 (W)×118 (H) mm, 2.3kg | |
Technical Documents:
DrSPECKLE_Type3_EN_OXIDE.pdf
DrSPECKLE_Type3_EN_OXIDE.pdf