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     Future Optics Sci. & Tech. Co., Ltd

     No.166 Wenyuanbei Road, 

     Xiasha Hangzhou China

     Tel:+86-571-81602497

     Fax:+86-571-81602496
    sale@future-optics.com
    inquiry@future-optics.com


Use of portable USB digital microscope

Being of excellent features, including:

1. Wide dynamic range; 

2. Low background noise; 

3. True color expression; 

4. Conjugation zoom imaging; 

5. Low optical power connected with high digital power;

6. Bigger focusing wheel; 

7. Uniform illumination of ring LED; 

8. Powerful software.

Our MDA portable USB microscopes have wide applications in industry, education, quality control and daily life. 

When connecting this device with PC, people can view, capture and save pictures & movies easily. The editing, 

comparing and measuring also can be well done out of lab, no stable platform and no extra lighting source are 

needed. 


Industry Inspection

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 (Figure 3).
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

Measurement:    

To measure the narrow gap size with the reticle calibrated at the same setting of magnification 40X (The settings of image resolution and screen display resolution keep unchanged). By moving the microscope with your hand and to draw the position of reticle with your PC mouse you can have the vertical line of reticle cover the tiny gap, and read out the divisions, the width of gap = 4.0 *0.072=0.288mm (See E-area of Figure 5).






 
  Figure 5:Picture of a metal part with a narrow gap at 40X


Improvement of image:

In order to capture a clear image of this shiny surface metal part, you need to adjust the setting of exposure time and the setting of Gamma value in software of Future Win Joe to cut away the noise background. You also need to have your metal part be apart from a shiny background material (See D-area of Figure 5, the distinct border between the metal part and the background of a cloth), and to take a picture not containing a shiny point (see B-area of Figure 5). In order to get a wider depth of field, you must capture your image at low power (See C-area of Figure 5).

Inspection in low power and high power: 

You can find the defect area in 3D viewing at 40X

 (See A-area of Figure 5).By turning the focusing wheel to let the lens move down to the metal part, you can get a high magnification (240X) position to view the detail of surface roughness (See Figure 6F-area of Figure 5 amplified ). Of course you can measure the interval of two adjacent waviness lines: the width of waviness =3.0 *0.019 =0.057mm,


Figure 6:Close view of waviness of the metal part at 240X


Electronic Inspection

Analyzing microstructure of PCB, checking up surfaces of precise workpieces and identifying key characteristics of IC module.

Figure 1: To check the LCD screen quality of "iPhone 5" Apple mobile phone with MDA2000 USB microscope


To test display resolution and true color expression of a “iPhone 5” Apple mobile phone

1. To calibrate reticle first (PC display resolution 1280*1024, image resolution of MDA2000:1600*1200), we get: 1mm equals to 54 units in reticle at 240X.

2. Keep “iPhone 5” turning on and to capture image of screen (See Figure 1).

3. We can recognize that one dot (one group which is composed of one red bar, one green bar and one blue bar) is covered by 5 units of reticle, and we work out that there are 274 dots in a range of one inch (25.4* 54 / 5). There is a little difference in compare with 326 DPI (dot per inch) declared by iPhone 5 manual. We work out the display resolution of a Samsung GT-I9008L in the same way, it’s only 203.2 DPI.


        Figure 2: Image of iPhone 5 screen at 240X  

You can inspect the quality of PCB surface without any support (See Figure 3)

In Figure 5 you can check the gold coating wire between the silicon base and metal frame of Aptian 1/2.5 inch 5MP digital image sensor one by one at 40 X, and to inspect the welding spots at 240X.

   Figure 3: Checking PCB  
   Figure 4: PCB with imaging sensor     Figure 5: Image sensor chip at 40X
   Figure 6: Image sensor chip at 240X


Textile Inspection

Inspectors can easily evaluate the quality of fabric by measuring the fabric density and checking the color.

 Figure 1: Picture of chemical fabric at 40X, the warp threads and weft threads are clearly shown on screen

 Figure 2: Optics pick glassFigure 3: To measure fabric density at 40XFigure 4: To inspect single thread at 240X

People usually estimate fabric density and fabric color with a traditional optics pick glass. Now with the help of MDA1300 portable USB digital microscope, accurate measurement of warp threads and weft threads per millimeter can be well done. From Figure 3, you can work out that 4 warp threads are covered by 12 units in horizontal reticle and 3 weft threads are covered by 12 units in vertical reticle (1 mm is calibrated to 12 units of reticle at 40X ). So we can say this chemical fabric is of density: 40 warp threads and 30 weft threads (threads per cm).

  Figure 5: Fabric of wool 240X  Figure 6: Fabric of demin 240X  Figure 7: Fabric of silk stockings 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 1: The halftone dots in the halftone grid show on screen at 240X


 Figure 2: Microsoft logo at 5X Figure 3: Microsoft logo at 40X


From Figure 4, 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 
 
  Figure 4: The size & spacing of the dots in the halftone grid of Microsoft logo at 240X


Law Enforcement

Real U.S. bills are printed using techniques that regular offset printing and digital, the portraits are sharp and contain very fine detailing. While the portraits in fake bills may appear dull, blurred, and flat. Examining the micro-printing with our MDA1300 usb portable microscope is the most correct way.

Figure 1: Green ink pattern and black strip setting unhidden on the bill’s face at 40X


 

Figure 2: “THE UNITED STATES OF AMERICA” on Franklin’s collar at 40X (on 100 USB bill the 2006 note)

 Figure 3: Bill check at 40X Figure 4: Microscopic flakes of metallic material at 240X


   

Education and Research

To observe, analyze and study animal & plant cells, specimens and entities out of lab and out of classroom.

 Figure 1: Joint of  honeybee foreleg (built-in LED reflective illumination) at 240X


  Figure 2: honeybee Foreleg at 40X  Figure 3: Tail of  honeybee foreleg at 240X

Built-in LED reflective illumination and white paper acting as a base.


Beauty and Skin Care

By checking and to tracking growth and metabolic process of skin and hair, to provide guidance of wrinkles smoothing away and blemishes eliminating.

 Figure 1: Skin of the back of hand of a young man at 40X


From Figure 3, you can measure the diameter of hair with the reticle: 0.019*5.5=0.10mm----B; Shining surface---A;  Dandriff attached in hair---C;  Branch of hair---D,E.
Figure 2Hair of an Asia young lady at 40XFigure 3Hair of an Asia young lady at 240X


Household and Hobby tool

To check and to discover the microscopic world around you for fun.

 Figure 1Tiny spot of pathogenic bacteria on garden flower at 240X


  Figure 2: movable beetle on leaf at 240X

 Figure 3: Larva of mosquito at 40X.


    
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