12. Inspecting microscope and accessories, buy Patent MDA2000R portable USB microscope with reticl measurement function for printing quality control on China Suppliers Mobile

Product Details

Specifications

Conjugate system:40X, 240X
Achromatic objective
Inclined illumination of 8 LED
1600*1200 for image & moive
Win8,Mac

♦Features:

1. Digital imaging module:2.0MP high performance CMOS imaging module;

2. Imaging software: Future Win Joe image & movie capturing and processing program

3. Optical conjugation imaging module: One set of lenses offers two optical magnifications: 2.5X and 0.4X;

4. Zoom and focus mechanism: Big focus wheel and double helix rail design offers smooth and fine adjustment of focus;

5. Uniform illumination part: Falling–in ring–lighting panel with 8 LED lamp.

6. Calibration ruler: 0.1mm/10mm calibrating slide.

♦Applications:

To measure the fine size which you cannot measure with a vernier scale and to check the tiny defects you cannot find by your human eye.

To measure the size of a tiny gap of a metal camera adapter and to take pictures of the metal camera surface texture for evaluation of quality, including surface roughness, contour, form, waviness and defects.

Calibration:

With a 10mm/ 0.1mm glass micro ruler (Figure 1), to calibrate the movable reticle of the software (Figure 2).

Figure 1 A 10mm / 0.1mm ruler Figure 2 A movable reticle of Future Win Joe

At 40X, the 1mm length of ruler is covered by 13.75 units of reticle, so the division value of reticle is: 1 / 13.75 =0.072mm (Figure3).

At 240X, the 1mm length of ruler is covered by 52.0 units of reticle, so the division value of reticle is: 1 / 52.0 =0.019mm (Figure 4).

Figure 3 Calibration of vertical line at 40X Figure 4 Calibration of vertical line at 240X

Printing Inspection

The most important factor related with printing quality is the "line frequency" or "screen ruling" of the halftone screen. It is measured in lines per inch (lpi), that determines the size and spacing of the cells in the halftone grid. For a higher quality print, the halftone spots are small and close together so less discernible to the eye, so a high power microscope must be necessary. For example, higher quality print would use 133 or 150 lpi.

Figure 5: The halftone dots in the halftone grid show on screen at 240X.

Figure 6: Microsoft logo at 5X Figure 7: Microsoft logo at 40X

Figure 8: The size & spacing of the dots in the halftone grid of Microsoft logo at 240X

From Figure 8, you can determine the size and spacing of dots easily. Dot size A1 (A3): 10*0.019=0.19mm; Spacing( A2): 0.019*8=0.15mm

♦Detail Specifications:

Capture Mode	Picture and Video
Sensor Parameter	1/3.2” 2.0MP Color CMOS
Max. Resolution	1600*1200
Pixel Size	2.8µm*2.8µm
Sensitivity	1.0V / lux-sec
Dynamic Range	71.0 dB
S/N Ratio	42.3 dB
Working Distance	5.0MM ---∞
Division of calibration ruler	0.1mm
Magnification	1---40X; 240X
Spectral Range	400-650nm(with IR-filter)
Frame Rate	7.5fps@1600*1200
Preview Model	16001200;12801024; 640480; 320240
Exposure	ERS or Manual
Power Consumption.	348 mW
White Balance	ERS or Manual
Out Interface	USB2.0
Device Size	Φ45mm*95mm
Device Weight	0.12kg
System Compatibility	32bit and 64bit, XP, Vista, Win7,Win8, Mac
Language of software	English, French, German, Spanish, Japanese, Chinese, Russian