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additional covert features may be verified using magnification or lasers.covert images are visible through an inexpensive verifier key. overt holography is verified visually, using no tools. additional covert features may be verified using magnification or lasers.
附加的隐性特征可通过放大或激光进行验证。隐蔽图像通过廉价的验证密钥就可以看到。显性全息图像可用人眼进行验证,无需任何工具。 附加的隐性特征可通过放大或激光进行验证。
covert images are visible under a focused light source such as a 3m™ handheld retroreflective verifier.overt holography is verified visually, using no tools. covert images are visible under a focused light source such as a 3m™ handheld retroreflective verifier.
在聚焦光源(如3m™手持式回归反射验证器) 照射下,可看见这些隐藏图像。显性全息图像可用人眼进行验证,无需借助任何工具。在聚焦光源(如3m™手持式回归反射验证器) 照射下,可看见这些隐藏图像。