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Patent Searching and Data


Title:
SCREEN AND IMAGE DISPLAY DEVICE
Document Type and Number:
WIPO Patent Application WO/2018/190434
Kind Code:
A1
Abstract:
Provided is a screen that secures the performance of a projection image displayed by reflecting display light and reduces distortion of a transmitted image from the outside. The present invention is provided with a first optical element 10 having a first prism structure 11 arranged continuously repeating on one surface, and a second optical element 20 having a second prism structure 21 arranged continuously repeating on the other surface. The second prism structure 21 has a shape substantially inverting the shape of the first prism structure 11. The first and second optical elements 10, 20 are joined in a state such that the first and second prism structures 11, 21 are facing. At the joining surface CR of the first and second optical elements 10, 20, display light L1 from a display element 30 is reflected as reflected light LR by the first and/or second prism structure 11, 21, and light from the opposite side from the display element 30 is transmitted as transmitted light L2, whereby the reflected light LR and the transmitted light L2 are overlaid so as to allow observation. The first prism structure 11 is arranged in at least a first direction along a screen surface 100a, and the inclination of the first prism structure 11 in a position in the first direction, and/or the curvature in a direction perpendicular to the screen surface 100a of the first prism structure 11, differs.

Inventors:
HASHIMURA JUNJI (JP)
Application Number:
PCT/JP2018/015602
Publication Date:
October 18, 2018
Filing Date:
April 13, 2018
Export Citation:
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Assignee:
KONICA MINOLTA INC (JP)
International Classes:
G03B21/62; G02B5/04; G02B5/08; G02B27/01
Foreign References:
JP2010539525A2010-12-16
JP2007525692A2007-09-06
JPH0511345A1993-01-22
JP2012203233A2012-10-22
Attorney, Agent or Firm:
FUKUDA, Mitsuhiro (JP)
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