1. This is actual price from the pricelist for standard product series.
2. Dot Vision directly serves and supports international customers.
3. You can get in touch with us simply by clicking "Inquiry now" as below buttom and we will get back to you within 24 hours timely.
4. DHL/Fedex/TNT/UPS service are used to make delivery to international customers, package can be delivered and signed within 4 working days.
NAME RULE:
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SPECIFICATION:
| Pattern Description | |||
| Grid Size (mm) | 3.0 x 3.0 | ||
| Grid Array | 13 x 12 | Pattern Size (mm) | 39 x 36 |
| Dimension / Geometry | |||
| Overall Dimension (mm) | 50 x 50 | Thickness (mm) | 3.0 |
| Dimension tolerance (mm) | ¡À0.1 | Thickness Tolerance (mm) | ¡À0.1 |
| Edges | Beveled | Angle of the edges | ¡À1¡ã |
| Accuracy | |||
| Grid Width Tolerance (mm) | ¡À0.001 | Grid Length Tolerance (mm) | ¡À0.001 |
Accuracy from Chart / Target edge to chrome feature / pattern (mm) | ¡À0.05 | Overall Accuracy (mm) | ¡À0.001 |
| Coating | |||
Standard Coating Type: Low Reflective Chrome | ¡ñ Color: Dark Brown; ¡ñ Reflectivity<25%@550nm; ¡ñ OD (Optical Density) >3; ¡ñ No pinhole bigger than 0.001mm; | ||
| Substrate Properties | |||
| Type | Chrome pattern on stable float glass substrate--suitable for backlight illumination/ transmission illumination applications | Surface Quality | Scratch:Dig<=40:20 |
| Surface Roughness | <0.025um | Surface Flatness | 3-4um |
| Thermal Expansion Coeff (15 to 200 ¡æ) | £¼100X10-7 / ¡æ | Annealing Point | >530 ¡æ |
| Refractive Index | 1.51680 | Transmission (400~700nm) | ¡«90% (transmittance can be increased by applying AR coating on glass surface if needed) |
| Knoop Hardness | >500 kg/mm2 | Shear Modulus | £¼3000 kg/mm2 |
Link:
How to select a suitable calibration plate
How to make customization in Dot Vision/Customization procedure
With guaranteed product quality, all calibration targets are tested using precision measurement instruments before packing and delivery to clients to ensure the accuracy.
Link:
Test report of a Dot Vision calibration target using a GOM 3D inspection system
We can provide a third party certificate of accury for the standard product if you require.
Dot Vision use direct write lithography technology to make chrome pattern / chrome mask layer above transparent soda lime glass (float glass) and opaque ceramic substrate to ensure high accuracy.
1. Minimum feature size: Down to 0.7 ¦Ìm
2. Address grid: Down to 12.5 nm
3. Exchangeable write modes
4. Real-time autofocus system
5. High power DPSS laser with 355 nm wavelength
6. Camera system for metrology and alignment
7. Closed-loop climate chamber
8. Edge detector system
Instructions for protecting the calibration target
The glass or ceramic substrate calibration targets are made with a high flatness and low thermal expansion coefficients. There is not much to maintain, but of course you should be careful using the target. Don¡¯t let it fall down, be careful during transportation, the side showing the pattern should be upside during use and transportation. Avoid scratches.
If you notice dust on the calibration target, use ear washing bulbs to remove the dust. If there¡¯s dirt on the target, use clean water and woven cloth to clean it.
Holes/ angles/ corners on the calibration target are available
Irregular shapes of calibration target are available
| Coating Types | ||
High Reflective Chrome (Silver): Reflectivity<65% @436nm | Low Reflective Chrome (Dark Brown): Reflectivity<25% @550nm | Blue Chrome (Blue): Reflectivity<5% @632nm |
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