Image source unit and display device

An image source unit comprising:

• a liquid crystal panel including a lower polarizing plate, an upper polarizing plate, and a liquid crystal layer arranged between the lower polarizing plate and the upper polarizing plate;
• and
• an optical sheet arranged on the lower polarizing plate side from the liquid crystal panel;
• a reflection type polarizing plate arranged on the opposite side of the optical sheet from the lower polarizing plate;
• and
• an optical element layer arranged on the opposite side of the reflection type polarizing plate from the optical sheet, the optical element layer including:
• a plurality of unit optical elements, each having a cross section convex to a side opposite the liquid crystal panel side of the optical element layer and having one extending direction keeping the cross section, the plurality of unit optical elements being arrayed in a direction different from the extending direction,
• wherein:
• the optical sheet includes a base material layer, and an optical functional layer;
• the optical functional layer includes a plurality of light transmissive portions and respective in-between portions formed in each of the intervals of the adjacent light transmissive portions, the light transmissive portions having one extending direction along a face of the base material layer and a predetermined cross section, and wherein the plurality of light transmissive portions are arrayed in a direction different from the extending direction at predetermined intervals;
• an angle formed by an extending direction of a transmission axis of the lower polarizing plate and the extending direction of the light transmissive portions is in the range of from 0° to 41.7° in a front view of the liquid crystal panel;
• and
• an angle formed by an extending direction of a transmission axis of the reflection type polarizing plate and the extending direction of the light transmissive portions is in the range from 0° to 41.7° in a front view of the liquid crystal panel.

A layered body comprising:

• a polarizing plate;
• and
• an optical sheet arranged on a face side of the polarizing plate;
• a reflection type polarizing plate arranged on the opposite side of the optical sheet from the polarizing plate;
• and
• an optical element layer arranged on the opposite side of the reflection type polarizing plate from the optical sheet, the optical element layer including:
• a plurality of unit optical elements, each having a cross section convex to a side opposite the reflection type polarizing plate side of the optical element layer and having one extending direction keeping the cross section, the plurality of unit optical elements arrayed in a direction different from the extending direction,
• wherein:
• the optical sheet includes a base material layer, an optical functional layer arranged on a face of the base material layer, and an adhesive layer;
• the optical functional layer includes a plurality of light transmissive portions and respective in-between portions formed in each of the intervals of the adjacent light transmissive portions, the light transmissive portions having one extending direction along a face of the base material layer and a predetermined cross section, and wherein the plurality of light transmissive portions are arrayed in a direction different from the extending direction at predetermined intervals;
• the adhesive layer adheres to the polarizing plate;
• an angle formed by an extending direction of a transmission axis of the polarizing plate and the extending direction of the light transmissive portions is in the range of from 0° to 41.7° in a front view of the layered body;
• and
• an angle formed by an extending direction of a transmission axis of the reflection type polarizing plate and the extending direction of the light transmissive portions is in the range from 0° to 41.7° in a front view of the reflection type polarizing plate.