A method for manufacturing a stereoscopic image display apparatus comprising the following steps: a. providing an image display section including an image generating section with a right eye image generating region for generating right eye image light and a left eye image generating region for generating left eye image light, wherein the image display section emits the right eye image light and the left eye image light as linearly polarized light rays of which the polarization axes are parallel to each other, b. providing a retarder at the emission side of the image display section, the retarder including a right eye polarization region, a left eye polarization region, and a light shield which is provided on an incident-side surface of the retarder in a boundary between the right eye polarization region and the left eye polarization region and which shields the incident right eye image light and the incident left eye image light, wherein the retarder, when the right eye image light is incident to the right eye polarization region and the left eye image light is incident to the left eye polarization region, emits the incident right eye image light and the incident left eye image light as linearly polarized light rays of whose polarization axes are orthogonal to each other or circularly polarized light rays having polarization axes whose rotation directions are reverse to each other, c. applying a resin to a region where the right eye image generating region and the left eye image generating region of the image display section overlap with the right eye polarization region and the left eye polarization region of the retarder, on at least one of an emission-side surface of the image display section and the incident-side surface of the retarder; d. placing the image display section and the retarder so that the emission-side surface of the image display section faces the incident-side surface of the retarder; e. pressing and laminating the image display section and the retarder; and f. hardening the resin between the image display section and the retarder laminated to each other; wherein the improvement consists in g. degassing the resin. a. providing an image display section including an image generating section with a right eye image generating region for generating right eye image light and a left eye image generating region for generating left eye image light, wherein the image display section emits the right eye image light and the left eye image light as linearly polarized light rays of which the polarization axes are parallel to each other, b. providing a retarder at the emission side of the image display section, the retarder including a right eye polarization region, a left eye polarization region, and a light shield which is provided on an incident-side surface of the retarder in a boundary between the right eye polarization region and the left eye polarization region and which shields the incident right eye image light and the incident left eye image light, wherein the retarder, when the right eye image light is incident to the right eye polarization region and the left eye image light is incident to the left eye polarization region, emits the incident right eye image light and the incident left eye image light as linearly polarized light rays of whose polarization axes are orthogonal to each other or circularly polarized light rays having polarization axes whose rotation directions are reverse to each other, c. applying a resin to a region where the right eye image generating region and the left eye image generating region of the image display section overlap with the right eye polarization region and the left eye polarization region of the retarder, on at least one of an emission-side surface of the image display section and the incident-side surface of the retarder; d. placing the image display section and the retarder so that the emission-side surface of the image display section faces the incident-side surface of the retarder; e. pressing and laminating the image display section and the retarder; and f. hardening the resin between the image display section and the retarder laminated to each other; wherein the improvement consists in g. degassing the resin.