Patent ID: 8437087

Claim:
An observation optical system configured to introduce light from a first display element configured to display a first original image and light from a second display element configured to display a second original image to an exit pupil to present an enlarged combined image of the first and second original images, the observation optical system comprising: a first optical element configured to allow the light from the first display element to enter thereinto; a second optical element configured to allow the light from the second display element to enter thereinto; and a third optical element, wherein the optical system is configured to introduce a first light component from a first display area in the second display element to the exit pupil through the second optical element and at least the first optical element of the first and third optical elements, and introduce a second light component from a second display area that is a different area from the first display area in the second display element to the exit pupil through the second and third optical elements, not through the first optical element.