Front projection screen with rear light concentrating lens array
Front projection screen
Lenticular arrays for front projection screens and contrast improving method and device
Bilayer rear projection screens
Rear-projection screen and a rear projection image display employing the rear-projection screen Patent #: 5400114
ApplicationNo. 505415 filed on 07/21/1995
US Classes:359/452, Embedded particles359/443, PROJECTION SCREEN359/453, Rear projection screen359/460Rear projection screen
ExaminersPrimary: Malley, Daniel P.
Attorney, Agent or Firm
International ClassG03B 021/60
AbstractA front projection screen is made up of a front portion and a rear portion, the front portion having a front surface lenticular lens array and light scattering particles forming a diffusion region between the front and rear surfaces, and the rear portion having a reflective surface spaced apart from the diffusion region. In use, an incoming ray of projected light traverses the diffusion region and the space between the diffusion region and the reflective surface, before being reflected back through these regions again. Thus, the ray traverses different portions of the diffusion region in different directions, increasing the likelihood that the ray will encounter at least one scattering particle, thus reducing the incidence of speckle. A stiffening layer of a glass plate with an anti-reflection coating is bonded to the front surface of the screen.