The following points, based on experience in the use of hologram types should always be taken into account in hologram projects:
1. Graphic or computer generated artwork can be integrated into the holographic process as one or several colors. Independently, however, only certain colors are visible when the hologram is viewed from a certain angle and these change sequentially when the angle from which it is viewed or illuminated is altered.
When viewed under a direct light source (a spotlight), the colors and edges of a hologram appear bright and clear. Extended light sources (a fluorescent light). Cause the colors to lose contrast. This is also true when holograms are viewed in diffuse light.
2. When computer-generated graphics are integrated, best results are obtained by using up to three colors in the image plane (i.e. surface of the holographic print). For the background both single color and two-color separation give excellent results.
3. The most important holographic information (company logo etc.) should generally be placed in the image plane as it is then most clearly visible in almost all light conditions. Objects or graphics behind the image plane are clearly visible under direct light but slightly reduce brilliance and definition when viewed in diffused light.
As with 3-D-holograms, the brightness of the message of 2-D/3-D-holograms is also reduced in the deeper background levels.
(Copyright LEONHARD KURZ GmbH & Co. KG 2003)