The present invention provides a Fresnel lens sheet that scarcely makes the projected image distorted, and others. The Fresnel lens sheet has a plurality of unit total reflection Fresnel lenses arranged on the light-entering side, each unit lens having a light-entering surface and a total reflection surface that totally reflects a part of or all of the imaging light that has passed through the light-entering surface to deflect the light in the desired direction. This Fresnel lens sheet is formed so that it fulfills the relationship H.sub.1.times.H.sub.1/(10.times.E.sub.1.times.T.sub.1.times.T.sub.1).ltor- eq.3L/2000, where H.sub.1 represents the length (cm) in the vertical direction of the Fresnel lens sheet; L.sub.1, the length (cm) in the horizontal direction of the Fresnel lens sheet; T.sub.1, the thickness (cm) of the Fresnel lens sheet; and E.sub.1, the modulus of elasticity (kgf/cm.sup.2) of the Fresnel lens sheet. Further, by using, to make up the Fresnel lens sheet, a Fresnel-lens-molded sheet having unit total reflection Fresnel lenses and a backing sheet laminated to the light-emerging surface of the Fresnel-lens-molded sheet, improvement in the efficiency of mold releasing operation that is conducted in the production of the Fresnel lens sheet is achieved.

 
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