A hybrid optical device for compressing light, including a first part which receives incident light shining on the device, wherein the first part is formed into sections along at least one direction thereof, wherein the sections receive respective portions of the light received by the first part, and individually compress and redirect the received portions of light, a second part which includes plural reflective surfaces which receive the compressed light from the sections of the first portion and further compress and redirect the portions of light, and a third part which receives the further compressed portions of light from the sections of the second part, and redirects same such that the light is output from the device.

A 3D imaging apparatus with enhanced depth of field to obtain electronic images of an object for use in generating a 3D digital model of the object. The apparatus includes a housing having mirrors positioned to receive an image from an object external to the housing and provide the image to an image sensor. The optical path between the object and the image sensor includes an aperture element having apertures for providing the image along multiple optical channels with a lens positioned within each of the optical channels. The depth of field of the apparatus includes the housing, allowing placement of the housing directly on the object when obtaining images of it.

A head-up display that allows an observer to visually recognize a virtual image in a viewpoint region of the observer is provided. The head-up display includes: a display device that has a display surface and displays an image on the display surface; and a first optical system that has a concave mirror, and a lens condensing the light and disposed between the concave mirror and the display surface. The first optical system causes a beam exiting from the display surface to form an intermediate image via the lens and the concave mirror, the intermediate image being enlarged from the image displayed on the display surface.

Methods and apparatus relating to image capture of image portions using optical chains with non-parallel optical axis are described. In some embodiments different portions of a scene area of interest captured by different optical chains operating in parallel are combined. The use of multiple optical chains in parallel facilitates generation of an image with a higher overall pixel count than would be possible using a single sensor of one of the optical chains and/or with more light capture than would be captured using a single one of the optical chains.

Disclosed are timepieces including a first mirror that is at least partially transparent and a second mirror. The second mirror is coupled to the first mirror to articulate with respect to the first mirror about a first axis. A time display is coupled to the second mirror. Also disclosed are reflecting devices including a first mirror and an articulating device coupled to the first mirror. A rotatable device is coupled to the articulating device and a second mirror is also coupled to the rotatable device. Additionally disclosed are reflecting kits including a mirror and an articulating device coupled to the mirror. A ring is coupled to the articulating device. The ring has an aperture. A reflective material is configured to be received by the ring. Methods of using these devices and kits are also disclosed.

A projection lens is separated by a second mirror into a first optical system that is disposed so as to be closer to an image forming panel and a second optical system that includes the second mirror and is disposed so as to be closer to a screen which is a projection surface. The second optical system is held rotatably around a second optical axis with respect to the first optical system by a first rotation mechanism. A rotation angle of the second optical system with respect to the first optical system is detected by a first sensor. A tilt angle of the projected image on the projection surface by the rotation angle is obtained by a tilt correction section, and the display position of the image to be displayed on the image forming panel is corrected according to the tilt angle.

An optical member includes a light guide body. The light guide body has an incident surface on which an outside light is incident, a first surface having flat portions and prism portions, an incident light incident on the incident surface reaching the first surface for the first time, and a second surface arranged opposite to the flat portions. The flat portions totally reflect the incident light toward the second surface. The second surface totally reflects a reflected light reflected by the flat portion toward the first surface. The prism portion has an ejection surface to emit the incident light to outside.

An optical device introduces light from an outdoor view in a blind spot area hidden by an obstacle. The optical device includes a first reflector that reflects a part of light and transmits another part of the light, and a second reflector placed between a back surface of the first reflector and the obstacle and apart from the first reflector. The second reflector has a reflective surface that reflects light incident from the first reflector toward the first reflector. A light shield is placed at a front surface of the first reflector to block external light incident on and reflected from the front surface of the first reflector. The light shield includes light-shielding plates arranged at an interval in a vertical direction such that each light-shielding plate is horizontal. The first reflector is parallel to the reflective surface of the second reflector and tilted from a vertical axis.

An optical projection system includes a source of collimated light, a first microelectromechanical system mirror positioned to receive collimated light from the source, and an optical relay system positioned to receive collimated light from the first microelectromechanical system mirror. The optical relay system includes a single-pass relay having a first component, a second component, and a third component. The optical projection system also includes a second microelectromechanical system mirror positioned to receive collimated light from the optical relay system and an eyepiece positioned to receive light reflected from the second microelectromechanical system mirror.

There is provided an an apparatus for reducing coherence of a laser beam, which apparatus comprises a rectangular chamber having a first, second, and third walls each comprising a reflective inner surface, and a fourth wall comprising a beam splitter. The fourth wall is configured to transmit a portion of the laser beam into the chamber to form an input beam incident upon the first wall. The first wall is configured to reflect the input beam onto the second wall, which is configured to reflect the input beam onto the third wall, which is configured to reflect the input beam onto the fourth wall. The fourth wall is configured to reflect a portion of the input beam to form a further input beam incident upon the first wall and to transmit another portion of the input beam out of the chamber to form an output laser beam.