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Supporting a 2.5μm-pixel-pitch
2/3″ Ultra-High-Resolution Fixed-Focal Lens Series
f=8mm F/1.8 (Model: M23FM08)
TAMRON
2.5μm-Pixel-Pitch Sensor
By supporting a 2.5μm-pixel-pitch, the lens maintains high-resolution from center to periphery. This lens series offers superior optical performance with resolution in the mega-pixel range even in the periphery of the image, and can be used for various applications such as inspection of small component, and inspection of detailed particles. In addition, each lens in the series provides high-quality images with minimized distortion.
Shortened MOD
The Minimum Objact Distance(MOD) is 10cm for f=6, 8, 12, 16,25mm and 15cm for f=35 and 50mm lens. Thanks to the reduced minimum focus distance, troublesome use of extension ring can be reduced. Even with high-resolution 2.5m-pixel-pitch sensor size, the lens pitch sensor size, the lens provides close-up ability.
Detailed Focus Adjustment
Newly designed mechanics enable a larger rotation angle for the focus making detailed focus adjustments that are necessary for higher resolution easy.
SPECIFICATIONS
Model No. M23FM08
Focal Length 8mm
Imager Size 2/3″
Aperture Range F1.8–22
Angle of View
(Horizontal 
× Vertical)
2/3″ 58.5°×45.1°
1/2″ 43.8°×33.3°
1/3″ 33.3°×25.2°
Focusing Range 0.1m–∞
Operation Focus:Manual , Iris:Manual
Filter Size M52 P=0.75mm
Back Focus 14.13mm(in air)
Wave Size Visible Light
Mount C-Mount
Operating Temperature -10℃–+70℃
Weight 280±10g

■ Working Distance Data Shooting distance and coverage with use of extension rings.
Extention tube Sensor size NEAR(Minimum Object Distance) FAR
NEAR(Minimum Object Distance) Field of View
(Hmm×Vmm)
W.D(mm) Field of View
(Hmm×Vmm)
2/3″ 98.3 134.8×99.2
1/1.8″ 98.3 110.1×81.5
1/2″ 98.3 108.8×71.3
1/3″ 98.3 71.3×53.2
0.5mm
EXT-0.5
2/3″ 42.2 71.3×52.2 111.8 149.1×109.8
1/1.8″ 42.2 58.0×42.8 111.8 121.8×90.2
1/2″ 42.2 57.3×37.4 111.8 120.3×79.0
1/3″ 42.2 37.4×27.9 111.8 79.0×58.9
1mm
EXT-1
2/3″ 22.3 48.7×35.5 46.1 75.3×55.2
1/1.8″ 22.3 39.5×29.1 46.1 61.3×45.2
1/2″ 22.3 39.0×25.4 46.1 60.6×39.6
1/3″ 22.3 25.4×18.9 46.1 39.6×29.5
1.5mm
EXT-1+EXT-0.5
2/3″ 12.1 37.2×27.0 24.1 50.7×37.0
1/1.8″ 12.1 30.0×22.0 24.1 41.1×30.3
1/2″ 12.1 29.7×19.3 24.1 40.6×26.5
1/3″ 12.1 19.3×14.3 24.1 19.3×14.3
Model Description
EXT-0.5 Extention tube (Close-up ring) 0.5mm
EXT-1 Extention tube (Close-up ring) 1mm
EXT-2 Extention tube (Close-up ring) 2mm
EXT-5 Extention tube 5mm
EXT-10 Extention tube 10mm
EXT-15 Extention tube 15mm
EXT-20 Extention tube 20mm
EXT-40 Extention tube 40mm
Extention tube set Extention tube set 0.5mm,1mm,5mm,10mm,22mm
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