SCREENS FOR USE AS DISPLAYS OF SMALL-SIZED DISPLAY DEVICES WITH TOUCH PANEL FUNCTIONS, AND SMALL-SIZED DISPLAY DEVICES WITH TOUCH PANEL FUNCTIONS COMPRISING SAID SCREENS
First Claim
1. A screen for use as a display of a small-sized display device with a touch panel function, comprising:
- a Fresnel lens sheet having a Fresnel lens portion and configured to convert image light projected from an image light source into light substantially parallel to a substantial normal direction of a screen surface and emit the converted light; and
a light control sheet located on an image light-exiting side of the Fresnel lens sheet,wherein the light control sheet comprises;
a plurality of unit light transmissive portions constituting part of an image light exiting surface of the light control sheet, the unit light transmissive portions extending in a transverse direction of the screen;
and a plurality of unit light absorbing portions constituting part of the image light-exiting surface of the light control sheet, the unit light absorbing portions extending in the transverse direction of the screen, the unit light transmissive portions and the unit light absorbing portions being alternately arranged.
1 Assignment
0 Petitions
Accused Products
Abstract
A display screen for a small-sized display device with a touch panel function includes: a Fresnel lens sheet including a Fresnel lens portion and configured to convert image light projected from an image light source into light substantially parallel to the substantial normal direction of a screen surface and emit the converted light; and a light control sheet located on the image light exiting side of the Fresnel lens sheet. The light control sheet includes: unit light transmissive portions constituting part of the image light exiting surface of the light control sheet, the unit light transmissive portions extending in the transverse direction of the screen; and unit light absorbing portions constituting part of the image light exiting surface of the light control sheet, the unit light absorbing portions extending in the transverse direction of the screen, the unit light transmissive portions and the unit light absorbing portions being alternately arranged.
41 Citations
11 Claims
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1. A screen for use as a display of a small-sized display device with a touch panel function, comprising:
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a Fresnel lens sheet having a Fresnel lens portion and configured to convert image light projected from an image light source into light substantially parallel to a substantial normal direction of a screen surface and emit the converted light; and a light control sheet located on an image light-exiting side of the Fresnel lens sheet, wherein the light control sheet comprises;
a plurality of unit light transmissive portions constituting part of an image light exiting surface of the light control sheet, the unit light transmissive portions extending in a transverse direction of the screen;and a plurality of unit light absorbing portions constituting part of the image light-exiting surface of the light control sheet, the unit light absorbing portions extending in the transverse direction of the screen, the unit light transmissive portions and the unit light absorbing portions being alternately arranged. - View Dependent Claims (2, 4, 5, 6, 7, 8, 9, 10, 11)
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3. A screen for use as a display of a small-sized display device with a touch panel function, comprising:
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a Fresnel lens sheet having a Fresnel lens portion and configured to convert image light projected from an image light source into light substantially parallel to a substantial normal direction of a screen surface and emit the converted light; and a light control sheet located on an image light exiting side of the Fresnel lens sheet, wherein the Fresnel lens portion has an optical center in a position decentered with respect to a center of a Fresnel lens portion formation face of the Fresnel lens sheet, the light control sheet comprises;
a plurality of unit light transmissive portions constituting part of an image light exiting surface of the light control sheet, and a plurality of unit light absorbing portions constituting part of the image light exiting surface of the light control sheet, andthe unit light transmissive portions and the unit light absorbing portions are alternately arranged in a first direction and extend in a second direction, the first direction being substantially parallel to a direction connecting the center of the Fresnel lens portion formation face and the optical center of the Fresnel lens portion, the first direction extending along the image light exiting surface, the second direction being substantially perpendicular to the first direction and extending along the image light exiting surface.
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Specification