Virtual image display device and method of manufacturing the same

摘要

In a virtual image display device, a mirror layer has a thickness of 50 nm or more to perform non-transparent reflection in a second ridge line vicinity area on a third reflection face side in a ridge line portion extending between the third reflection face and a second reflection face. Accordingly, reflectance of image light can be prevented from being decreased by the second ridge line vicinity area (that is, a peripheral portion on a light guide unit in the third reflection face), and thus stripe-shaped brightness unevenness extending in a longitudinal direction can be prevented from occurring on the viewed image. That is, in the image display device, it is possible to secure sufficient reflection even in the peripheral portion close to a boundary with the second reflection face with respect to the third reflection face, and also to display a bright image with little brightness unevenness.

主权项

1. A virtual image display device comprising:
an image display device that forms image light; an optical projection system that forms a virtual image by the image light emitted from the image display device; and a light guide device that has a light incident unit receiving the image light passing through the optical projection system, a light guide unit directing the image light received from the light incident unit by total reflection on first and second faces opposed to each other and extending in parallel, and a light emission unit emitting the image light passing through the light guide unit to the outside, wherein the light incident unit has a third face that reflects the image light by a reflection unit forming an obtuse angle with respect to the second face, and wherein the reflection unit covers a ridge line vicinity area on a third face side in an angled portion between a third face and the second face, and the reflection unit protrudes and extends at least at a part of the ridge line vicinity area on the second face side in the angled portion.