An observation device includes: first objective lenses arranged in a row so as to be parallel to one another; second objective lenses arranged in a row so as to be parallel to one another; and image capturing elements for capturing first images formed by the first objective lenses and second images formed by the second objective lenses, respectively, wherein each of the objective lenses is a magnifying objective lens, a first axis of light incident on the first objective lenses and a second axis of light incident on the second objective lenses are parallel to one another, fields of view of the first objective lenses and fields of view of the second objective lenses are arranged alternately in a row on an observation line, and the first images and the second images are arranged in a row in image-forming regions that are disposed at positions different from each other.

In order to achieve the above object, an image display apparatus according to an embodiment of the present technology includes a light source section and one or more optical components. The one or more optical components include an optical surface for dividing the light emitted from the light source into a plurality of light beams to be converged and a reflective surface for reflecting the plurality of light beams converged by the optical surface, and emit the plurality of light beams reflected by the reflective surface from the optical surface.

An optical system of an endoscope having a lateral viewing direction, the optical system including: a sideways looking distal optical assembly; and a proximal optical assembly, wherein light bundles incident from an object space are guided along a beam path by the distal and proximal optical assemblies and imaged on an image sensor; the distal optical assembly comprises a deflection prism assembly having first and second prisms arranged in a direction of incident light; the first prism has first inlet and inclined first outlet sides; the second prism has second inlet, reflection, and second outlet sides; and the first outlet side of the first prism and/or the second inlet side of the second prism have a coating in a region outside of the beam path to form an air gap in a region of the beam path between the first outlet and second inlet sides.

An optical system of an endoscope having a lateral viewing direction, the optical system including: a sideways looking distal optical assembly; and a proximal optical assembly, wherein light bundles incident from an object space are guided along a beam path by the distal and proximal optical assemblies and imaged on an image sensor; the distal optical assembly comprises a deflection prism assembly having first and second prisms arranged in a direction of incident light; the first prism has first inlet and inclined first outlet sides; the second prism has second inlet, reflection, and second outlet sides; and the first outlet side of the first prism and/or the second inlet side of the second prism have a coating in a region outside of the beam path to form an air gap in a region of the beam path between the first outlet and second inlet sides.

Optical combiners and methods of manufacturing and alignment thereof are provided. An optical combiner includes a first optical element with a convex surface and a second optical element with a concave surface. At least one of the convex or concave surfaces has an aspherical curvature, e.g., is an aspherical surface. A reflective coating is applied to the aspherical surface, and an adhesive couples the convex surface to the concave surface to provide a combined optical element. The combined optical element, or optical doublet, may be aligned with a light source, to be reflected by the reflective coating, to provide an aiming reference for a user.

Described examples a three-dimensional printer includes a vat having a transparent bottom, the vat configured to contain a photo-polymerizing resin and a lift plate movably positioned within the vat. The three-dimensional printer also includes an optical device configured to project a pattern of light through the transparent bottom. The optical device includes a light source configured to provide light at a light source output and a light integrator configured to provide divergent light at a light integrator output responsive to the light at the light source output. The optical device also includes projection optics configured to project projection output light at an optics output through the transparent bottom responsive to a modulated light at the optics input and a spatial light modulator configured to provide the modulated light responsive to the divergent light.

Described examples a three-dimensional printer includes a vat having a transparent bottom, the vat configured to contain a photo-polymerizing resin and a lift plate movably positioned within the vat. The three-dimensional printer also includes an optical device configured to project a pattern of light through the transparent bottom. The optical device includes a light source configured to provide light at a light source output and a light integrator configured to provide divergent light at a light integrator output responsive to the light at the light source output. The optical device also includes projection optics configured to project projection output light at an optics output through the transparent bottom responsive to a modulated light at the optics input and a spatial light modulator configured to provide the modulated light responsive to the divergent light.

The present invention discloses an erecting system and a binocular telescope for laser ranging. The erecting system comprises a roof half penta prism, a beam splitting prism and an isosceles prism. The beam splitting prism is positioned between the roof half penta prism and the isosceles prism. The beam splitting prism is formed by bonding two right-angle prisms. A beam splitting film is arranged on a bonding surface of the two right-angle prisms. The present invention not only has simple structure and small occupation volume, but also is convenient in use, can realize the binocular observation and targeting at a measured object, and can display the distance of the measured object in real time in the field of view while observing the object.

The imaging device includes a support member attached to the device main body and a display panel attached to the support member. The support member is configured to pivot around a first rotation axis and thereby move to a storage position and a tilt position. The display panel is configured to pivot around a second rotation axis orthogonal to the first rotation axis and thereby move to a closed position and an opened position and to pivot around a third rotation axis orthogonal to the second rotation axis and thereby vary a tilt angle of a display surface with respect to the extending direction of the second hinge part. When the support member is located at the tilt position and the display panel located at the opened position is pivoted around the third rotation axis, the display panel passes through outside the connector connection region.

Disclosed are various embodiments regarding a head-mounted device. According to an embodiment, a mount device comprises: a housing comprising a front surface, a rear surface that can be mounted on a head, and a side surface surrounding the front surface and the rear surface; a coupling portion can be disposed in housing, and can be configured to be coupled so as to slope an external electronic device at a designated angle with regard to the side surface; a prism comprising a first surface capable of facing, at the designated angle, at least a part of a display included in the external electronic device that can be coupled to the coupling portion, a second surface capable of changing (through total reflection) the direction of light that is incident from the display through the first surface, and a third surface capable of emitting the light, the direction of which has changed; a mirror arranged between at least a part of the side surface and the third surface; and a splitter arranged between the mirror and the third surface to be capable of transmitting at least a part of light emitted through the third surface and changing the direction of the light, which is transmitted and then reflected by the mirror, to a direction corresponding to the rear surface. Various other embodiments are possible.