An information reading device that optically reads information recorded on an information recording medium may include a transparent placement member; a first illumination light a second illumination light a first optical system to read information on the lower surface of the information recording medium; a second optical system to read information on the upper surface of the information recording medium; and a cover member. The second optical system may include a reflection mirror. A medium disposition part may be formed by the placement member and the cover member. The upper surface portion and the side surface portions may be transparent. The second illumination light may be disposed on outer sides of the medium disposition part in the left-right direction. Light emitted from the second illumination light and transmitted through the side surface portions may be irradiated onto the upper surface of the information recording medium placed on the placement member.

The disclosure relates to a viewing optic. In one embodiment, the disclosure relates to a a viewing optic with an integrated display system. In one embodiment, the disclosure relates to a solar powered viewing optic with an integrated display system.

A viewing neck posture discomfort relief accessory includes a user wearable head band assembly, and an optical assembly attached to the user wearable head band assembly. The user wearable head band assembly is worn by the user to place the optical assembly in front of the user's eyes. The optical assembly enables the user to look into the optical assembly in a forward direction so that the neck of the user can be held in a generally upright comfortable posture due to the optical assembly having pairs of mirrors that reflect the path of sight of the user' eyes from the forward direction to a downward direction to allow viewing an item, such as a book page or mobile device keyboard or screen, being held by the user in a generally horizontal orientation.

An alignment system uses a self-referencing interferometer that incorporates an objective lens system having a plurality of lens element groups. In an embodiment, the objective is configured and arranged to provide a large numerical aperture, long working distance, and low wavefront error.

An infinity mirror device has a first mirror having a convex first reflective surface, a partially transparent second mirror having a second reflective surface facing the first reflective surface wherein the first and second mirror are spaced apart by a predetermined distance, and a light source disposed in a space between the first and the second mirror.

A viewing neck posture discomfort relief accessory includes a user wearable head band assembly, and an optical assembly attached to the user wearable head band assembly. The user wearable head band assembly is worn by the user to place the optical assembly in front of the user's eyes. The optical assembly enables the user to look into the optical assembly in a forward direction so that the neck of the user can be held in a generally upright comfortable posture due to the optical assembly having pairs of mirrors that reflect the path of sight of the user' eyes from the forward direction to a downward direction to allow viewing an item, such as a book page or mobile device keyboard or screen, being held by the user in a generally horizontal orientation.

A lens driving device includes: a lens carrier for fixing a lens barrel to the inside thereof; a driving unit for moving the lens carrier along the optical axis direction of the lens barrel; and an upper leaf spring and a lower leaf spring attached to the lens carrier in a manner that a surface of the each upper leaf spring and lower leaf spring is oriented orthogonal to the optical axis direction at an upper part and a lower part of the lens carrier and so that the lens carrier is supported in a manner to move freely in the optical axis direction of the lens barrel; wherein the lens carrier has an opening through which the lens barrel can be inserted from the direction intersecting the optical axis direction of the lens barrel.

An alignment system uses a self-referencing interferometer that incorporates an objective lens system having a plurality of lens element groups. In an embodiment, the objective is configured and arranged to provide a large numerical aperture, long working distance, and low wavefront error.

The disclosure relates to a viewing optic. In one embodiment, the disclosure relates to a display system for a viewing optic. In one embodiment, the disclosure relates to a viewing optic having a display system with multiple active displays for generating images that are projected into a first focal plane of an optical system.

In one embodiment, a display device comprises: a substrate including an emissive area that emits light and a non-emissive area that does not emit light; a transistor over the substrate; a light emitting device over the transistor, the light emitting device including a first electrode, a light emitting layer on the first electrode, and a second electrode on the light emitting layer; a contact hole in the emissive area of the substrate, the contact hole positioned between the transistor and the light emitting device; and an auxiliary electrode in the contact hole, the auxiliary electrode electrically connecting together the first electrode of the light emitting device and the transistor.