AN OPTICAL DEVICE WITH WIDER FIELD OF VIEW USING CONVEX LENS AND A HEAD MOUNTED DISPLAY APPARATUS HAVING THEREOF

摘要

The present invention relates to an optical device with a wider field of view by using a convex lens, and more particularly, as an optical device, it is disposed in front of the user's eyes, so that the real world can be seen through the user's field of view. optical system; and a display for outputting image light so that image information along with the real world transmitted through the optical system can be provided as an optimized screen to the user, wherein the optical system transmits the image light output from the display to the user's a beam splitter that reflects in the direction of the eye and transmits real-world light; a single plano-convex lens disposed on an optical path of the image light between the display and the beam splitter and convex toward the beam splitter, the convex lens refracting the image light output from the display; and a concave mirror disposed on the opposite side of the convex lens with respect to the beam splitter, in a concave shape toward the beam splitter, for reflecting the image light transmitted through the beam splitter in the beam splitter direction, wherein the convex mirror The lens has a flat surface that is 1.0 to 1.5 mm apart from the display, and the most convex part of the convex surface is spaced 13 to 15 mm away from the center of the beam splitter, and the image light is refracted by the convex lens to view (Field of View; FOV) wider than 40 degrees is characterized by its configuration. In addition, the present invention relates to a head-wearable display device using an optical device with a wider field of view using a convex lens, and more particularly, to a head-wearable display device, comprising: an HMD frame that a user can wear on the head; and an optical device that provides augmented reality or mixed reality to a user wearing the HMD frame, wherein the optical device is disposed in front of the user's eyes wearing the HMD frame, the real world through the user's field of view an optical system through which the real world can be seen; and a display for outputting image light so that image information along with the real world transmitted through the optical system can be provided as an optimized screen to the user, wherein the optical system transmits the image light output from the display to the user's a beam splitter that reflects in the direction of the eye and transmits real-world light; a single lens disposed on the optical path of the image light between the display and the beam splitter and convex toward the beam splitter, the convex lens refracting the image light output from the display; and a concave mirror disposed on the opposite side of the convex lens with respect to the beam splitter, in a concave shape toward the beam splitter, for reflecting the image light transmitted through the beam splitter in the beam splitter direction, wherein the convex mirror The lens has a flat surface that is 1.0 to 1.5 mm apart from the display, and the most convex part of the convex surface is spaced 13 to 15 mm away from the center of the beam splitter, and the image light is refracted by the convex lens to view (Field of View; FOV) wider than 40 degrees is characterized by its configuration. According to the optical device using the convex lens to widen the field of view and the head mounted display device using the same, the convex lens is disposed on the optical path of the image light between the display and the beam splitter, and the image light output from the display By optimizing the design so that this refraction is incident on the optical system, the field of view (FOV) is expanded to 40 degrees or more, thereby increasing the immersion in the image and increasing the efficiency of screen utilization.