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.
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SPECIFICATION:
| Pattern Description | |||
| Checker Size | 2.0x2.0mm | Checker / Chess Array | 13x12 |
| Checkerboard / Chessboard Pattern area | 26x24mm | Polarity | Chessgrid on Transparent / White background |
| Geometry Dimension and Tolerance | |||
| Overall Dimension | 38 x 38mm | Thickness | 3.0mm |
| Dimension tolerance | ¡À0.1mm | Thickness Tolerance | ¡À0.1mm |
| Edges | Beveled | Angle of the edges | ¡À1¡ã |
| Surface Roughness | <0.025um | Surface Flatness | <10um |
| Accuracy Description | |||
| Single Checker Size Accuracy | ¡À0.001mm | ||
| Chessgrid Corner to Corner Spacing Accuracy of Any 2 Neighbor Checkers (Accuracy Definition ➡Go Link) | ¡À0.001mm | ||
| ChessGrid Corner Position Accuracy among Entire Grid (Regarding to Ideal Position) (Accuracy Definition ➡Go Link) | ¡À0.001mm | ||
| Dot Spacing Accuracy of Any 2 Dots (Accuracy Definition ➡Go Link) | ¡À0.001mm | ||
Accuray of Distance from Chrome Pattern to Target Edge | ¡À0.1mm | ||
| 3rd Party Certificate of Accuracy £¯ Internal Certificate of Accuracy | Available on request (➡Example Link) | ||
| Chrome Coating | |||
Standard Coating Type: Dark Brown Chrome | ¡ñ Color: First surface / Air side Dark Brown, glass side SILVER; ¡ñ Reflectivity<25%@550nm; ¡ñ OD (Optical Density) >3.0; ¡ñ No pinhole bigger than 0.001mm; ¡ñ Custom Chrome type (High Reflective chrome and Blue chrome ➡ Go Link; ¡ñ AR coating (Anti-Reflection coating): Avaialbe ➡ Go Link; | ||
| Substrate Properties | |||
| Reflectance (420~700nm) | Rave<4.368%@420~700nm (Reflectance can be optimized to Rave<0.5% by applying AR coating on glass surface if needed) | Transmittance (420~700nm) | Tmax <91.892%@420~700nm (Transmittance can be optimized to Tmax<99.2% by applying AR coating on glass surface if needed) |
| Refractive Index | 1.5373@400nm; 1.5234@587nm; 1.5195@700nm; | Surface Quality | Scratch:Dig<=40:20 |
| Thermal Expansion Coeff (CTE) (15 to 200 ¡æ) | 85X10-7 / ¡æ | Manufacturing Temperature | 23¡æ |
| Shear Modulus | £¼3000 kg/mm2 | Knoop Hardness | >500 kg/mm2 |
| Annealing Point | >530 ¡æ | Gross Weight | 10.0g |
| Highest Use Temperature | 80¡æ | Storage Temperature | 10-80¡æ |
| Type | Chrome on glass calibration target--suitable for backlight illumination/ transmission illumination applications | ||
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.
Dot Vision can provide third party certificate of the accury from feature to feature for the customization product if you require. You can name and require any feature/position which you want accuracy certification from third party.
Ø OMM machine used: Hexagon OMM machine with uncertainty Exy= ¡À(0.6+L/900) um (Laboratory temerature 20¡æ, humidity 49%)
Ø OMM measuring 3rd party is accredited in accordance with ISO/IEC 17025:2005 General Requirement for the competence of Testing and Calibration Laboratories
Go Link:
Accuracy performance analysis of a chrome on glass dot grid calibration target
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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