Title

尽管在测量应用方面畸变会带来一定的麻烦，但是您必须清楚事实上关于被测物体的各种信息并没有丢失，仅仅是物体所成的像放错了位置而已。采用本测试卡，您可以很方便的测量出畸变当量和精度。使用斑点（或质心）分析测量软件就可对斑点中心定位。栅格图案按比例缩小，因此一个图案可用在各种镜头和视场。包装上附NIST跟踪认证，根据标准MIL-STD-45662A。

The fixed frequency targets are available in a variety of dot size/spacing combinations to complement our full line of imaging lenses. Select a target to cover your entire field of view while maintaining an adequate number of dots across the field, and an adequate number of pixels per dot. The 3 or 5 grids on the multi-frequency target scale down so that one target can be used for a variety of lenses and fields of view. Both types of targets are available in a chrome on glass or chrome on opal target to accommodate transmission or reflection based on applications respectively. Included in the packaging is a serialized NIST Traceable Certificate of Accuracy per MILSTD-45662A.

技术信息

测试目标板公差
	玻璃上的铬和蛋白石测试目标板上的铬	白色反射 Mylar® 测试目标板
正方形阵列放置	±0.004mm	±0.02mm
点直径	±0.0025mm	±0.013mm
点中心到中心间距	±0.0025mm	±0.013mm
网格角到角的精度	±0.004mm	±0.2mm

Target Dimensions
		A	B	C	D	E
3 Frequency Glass Targets	Square Length (mm)	50.00mm	25.00mm	12.50mm	N/A	N/A
	Dot Diameter (mm)	1.00mm	0.50mm	0.25mm	N/A	N/A
	Dot Spacing (mm)	2.00mm	1.00mm	0.50mm	N/A	N/A
5 Frequency Glass Targets	Square Length (mm)	50.00mm	34.00mm	20.00mm	10.00mm	5.00mm
	Dot Diameter (mm)	1.00mm	0.50mm	0.25mm	0.125mm	0.0625mm
	Dot Spacing (mm)	2.00mm	1.00mm	0.50mm	0.25mm	0.125mm
3 Frequency Mylar Targets	Square Length (mm)	150.00mm	75.00mm	37.50mm	N/A	N/A
	Dot Diameter (mm)	3.00mm	1.50mm	0.75mm	N/A	N/A
	Dot Spacing (mm)	6.00mm	3.00mm	1.50mm	N/A	N/A
5 Frequency Mylar Targets	Square Length(mm)	150.00mm	102.00mm	72.00mm	48.00mm	24.00mm
	Dot Diameter (mm)	3.00mm	1.50mm	0.75mm	0.50mm	0.25mm
	Dot Spacing (mm)	6.00mm	3.00mm	1.50mm	1.00mm	0.50mm

通用规格

尺寸 (mm):

76.2 x 76.2

涂层:

Vacuum Deposited Chromium Oxide (Specular Reflectivity <5% @ 550nm)

表面平整度:

4 - 6λ