Patent ID: 11914145
Assignee: KWANGWOON UNIVERSITY INDUSTRY-ACADEMIC COLLABORATION FOUNDATION
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. A floating hologram system comprising:
a diffuser configured to form a projection image using light beams transmitted from an image transmitter and configured to diffuse the formed image; and
a holographic optical element on which the image diffused from the diffuser is incident and which generates a virtual image floating at a position a predetermined distance therefrom and has a convex lens characteristic,
wherein a distance between the diffuser and the holographic optical element is determined based on a focal length of the holographic optical element and a distance from the holographic optical element to the virtual image, wherein a size (Lv) of the virtual image is determined based on a size (Ld) of the image formed by the diffuser, the focal length (doh) of the holographic optical element, and the distance (dvh) from the holographic optical element to the virtual image according to an equation of, L
    v
   
   =
   
    
     
      
       L
       d
      
      ⁢
      
       d
       vh
      
     
     
      d
      oh
     
    
    ⁢
    
          .