A projection system that facilitates the use of in-situ detection of a change in wavelength, thereby enabling appropriate compensation or corrections to be applied on the fly to improve the quality of the image in the primary image region. In-situ detection in this manner can allow wavelength changes due to both temperature fluctuations and hardware variations to be compensated for simultaneously, thereby reducing the time and expense for end of line hardware testing, and removing the need to perform in-situ mapping of the wavelength as a function of temperature. In this way, the quality of the image provided to a user can be improved in a simpler, more efficient manner.

A projection system that facilitates the use of in-situ detection of a change in wavelength, thereby enabling appropriate compensation or corrections to be applied on the fly to improve the quality of the image in the primary image region. In-situ detection in this manner can allow wavelength changes due to both temperature fluctuations and hardware variations to be compensated for simultaneously, thereby reducing the time and expense for end of line hardware testing, and removing the need to perform in-situ mapping of the wavelength as a function of temperature. In this way, the quality of the image provided to a user can be improved in a simpler, more efficient manner.

According to the present invention, by providing a hologram displaying apparatus including a light source configured to output a plurality of lights of different wavelengths in a first direction, a generator configured to generate a plurality of color holograms of different wavelengths using the plurality of light, and output the plurality of color holograms in the first direction, a filter configured to filter an effective hologram which is an element of an effective band of the plurality of color holograms in the first direction, and a display configured to transmit the effective hologram in the first direction and display the effective hologram in space in the first direction, it is possible to effectively filter an effective band of a certain diffraction order of each color hologram forming a composing hologram.

According to the present invention, by providing a hologram displaying apparatus including a light source configured to output a plurality of lights of different wavelengths in a first direction, a generator configured to generate a plurality of color holograms of different wavelengths using the plurality of light, and output the plurality of color holograms in the first direction, a filter configured to filter an effective hologram which is an element of an effective band of the plurality of color holograms in the first direction, and a display configured to transmit the effective hologram in the first direction and display the effective hologram in space in the first direction, it is possible to effectively filter an effective band of a certain diffraction order of each color hologram forming a composing hologram.

An imaging module, including a lens and a transmissive display panel disposed adjacent to each other, and a controller electrically connected to the transmissive display panel, the controller loading a white image on a preset area of the transmissive display panel so that a light beam passes through the preset area. A light beam gating control method, a testing apparatus and method for an imaging module are further provided.

An imaging module, including a lens and a transmissive display panel disposed adjacent to each other, and a controller electrically connected to the transmissive display panel, the controller loading a white image on a preset area of the transmissive display panel so that a light beam passes through the preset area. A light beam gating control method, a testing apparatus and method for an imaging module are further provided.

A system for a functionalized pane in a door, through which person-based and/or object-based authorization verification can be carried out is provided. The person-based verification can include a holography-based, stereoscopic holocamera that can be integrated into the pane. In addition, a holographic display that can also be integrated into the pane can be included. Corresponding methods can be used to carry out the authorization verification under the control of the control device and to control a locking mechanism of a door and a holographic display.

A display member including a light transmission layer having a principal surface including a plurality of pixels; and a metal layer covering the principal surface, one or more of the pixels include a first region, one or more of the pixels include a second region, the first region has a plurality of first grooves or ridges each of which extends in a longitudinal direction in a first angle range of about 10 to +10 with respect to a first direction, the second region has a plurality of second grooves or ridges each of which extends in a longitudinal direction in a second angle range of about 65 to +65 with respect to a second direction perpendicular to the first direction, the second grooves or ridges form a diffraction structure, and the metal layer does not cover at least part of the first region and covers the second region.

Disclosed herein a light projection device and a head lamp for vehicle capable of highly increasing and decreasing the illuminance of a plurality of specific regions in a light distribution designed in advance with high degree of freedom. The light projection device includes: a first optical system that forms a second light radiation region; a dynamic light deflection unit configured to deflect a light beam involved in forming the second light radiation region; a second optical system configured to project the deflected light beam to form a third light radiation region; and a deflection pattern generation unit configured to deflect and output each ray of the light beam such that a direction of deflection to be imparted is dependent on a position at which each ray is incident on the light incident portion.

Disclosed herein a light projection device and a head lamp for vehicle capable of highly increasing and decreasing the illuminance of a plurality of specific regions in a light distribution designed in advance with high degree of freedom. The light projection device includes: a first optical system that forms a second light radiation region; a dynamic light deflection unit configured to deflect a light beam involved in forming the second light radiation region; a second optical system configured to project the deflected light beam to form a third light radiation region; and a deflection pattern generation unit configured to deflect and output each ray of the light beam such that a direction of deflection to be imparted is dependent on a position at which each ray is incident on the light incident portion.