传统的模压全息图采用镀铝PET或烫印箔作工作介质,再现像的视场角受到全息图衍射和色散的限制。在有效衍射范围之外,再现像消失,只能观察到由镀铝层的镜面反射形成的银白色的视场。对低衍射效率的全息图,这一问题尤为突出。由于寻找图像比较困难,造成了目前许多用户对全息防伪商标的疑虑。透射/反射型全息图以一个独特的角度解决了上述问题。 Traditional molded holograms using aluminum-plated PET or hot stamping foil as the working medium, the reproduction of the image angle by the hologram diffraction and dispersion restrictions. Outside the effective diffraction range, the reproduced image disappears, and only the silver-white field of view formed by the specular reflection of the aluminized layer can be observed. This problem is especially noticeable for low diffraction efficiency holograms. Due to the difficulty of finding images, many users are currently doubts about holographic anti-counterfeit labels. Transmissive / reflective holograms solve this problem with a unique perspective.