Industrial Technology Research Institute

Ying-Tsung Lu

Pong Lai

Ching-Chin Wu

Chang-Sheng Chu

Pai-Ping Huang

Wann-Diing Tyan

Hoang-Yan Lin

Rung-Ywan Tsai

Jyh-Long Chern

Hsiu-Hsiang Chen

Eric G Lean

Huang-Chen Guo

Yung-Hsin Chen

Wann-Ding Tyan

Eric-G Lin

Jeng-Feng Lin

A virtual input element image projection apparatus couples a suitable lens and an optical element to increase the diverging angle of a virtual input element image or generate a plurality of portions of the virtual input element image that are coupled to form the complete virtual input element image without reducing diffraction efficiency. The projection distance for generating the virtual input element image may also be shortened.

Virtual input element image projection apparatus

A method of manufacturing micro-structure elements by utilizing molding glass includes the steps of forming a mold having a micro-structure pattern thereon by using an electroforming process, making a copy of the micro-structuring pattern on a glass structure by using glass molding technology, and filling clothing material on the glass substrate to form a micro-structure element with less complex and cost, thereby being suitable for mass production.

Method of manufacturing micro-structure element by utilizing molding glass

Direct backlight modules using diffraction optical elements are provided. A direct backlight module includes a light source and a diffraction optical element, wherein the diffraction optical element is disposed above the light source. By properly arranging the phase function, the diffraction optical element can substantially modulate the wavefront of the light emitted from the light source and control light distribution as well as light direction.

Backlight modules using diffraction optical elements

An anti-counterfeit method and system by using a nano metal grating, wherein an object to be recognized is formed with the nano metal grating. During the recognition process, an incidental light is applied on the metal grating. In response to the incidental light, the metal grating has its specific optical incidence and reflection characteristics. The object is then identified whether it is genuine or fake by observing the refraction light passing through and reflection light reflected from the metal grating. Further, the incident light beam can be polarized to generate polarized light beams and then irradiated on the metal grating, whereafter the recognition of the object is performed by observing the reflection and refraction lights of the irradiated polarized light beam. The recognition further can be accomplished by rotating the metal grating, thus the intensity of the refraction and reflection lights will accordingly be changed, thereby identifying the object.

Anti-counterfeit method and system by using a nano metal grating

An apparatus for forming a nano grating device to film nano-scale interference fringes by holography in order to makes a nano-scale meshed structure is disclosed. A beam emitted form a light source passes subsequently through a beam splitter and two reflectors to reach at symmetrically mounted light emitting modules. The light emitting modules generate two beams passing along the same optical paths and then projecting on a photosensitive substrate that is attached on a hemi-sphere lens. Thus, a first set of interference fringes are formed. Then, the substrate rotates with an angle and then is subjected to exposure to form a second set of interference fringes crossing the first set of interference fringes. Thereby, a nano-scale meshed structure is obtained.

Apparatus for forming nano-grating device

A micro fluorescent electrophoresis (EP) detection system for detecting fluorescent EP is disclosed. The size of the system is greatly minimized for carrying. The invention uses a laser diode with a cylindrical lens to perform light source detection. A probe is provided to receive excited light produced by the probed object and to convert it into an electronic signal for detection. This does not only lower the cost, but also largely reduce its size for the patient's convenience of carrying and self-testing.

Micro fluorescent electrophoresis detection system

A grating interference device with adjustable resolution has high stability and precision adjustment functions. The invention has two reflectors and a beam splitter. One of the reflector is installed on a rotating axis along with an optic fiber or a platform of planar waveguide. Through the rotating axis, this reflector and the platform are maintained at a fixed relative angle and rotate with respect to the other reflector and the beam splitter. The period of the interference grating is controlled by the angle change, producing a grating with a micrometer-order period on the optic fiber or the planar waveguide.

Grating interference device with adjustable resolution

This specification discloses a planar optical waveguide DWDM (Dense Wavelength Division Multiplexer), which is an integrated DWDM made by using the planar optical waveguide manufacturing technology. A diffractive grating is used in a planar optical path to direct beams of different wavelengths in a beam into different directions. An arrayed waveguide installed at the output end of the planar optical path couples the beams of different wavelengths to an optical fiber connected at the output end, separating the waves. On the other hand, a preferred embodiment of the invention has an arrayed lens between the diffractive grating and the arrayed waveguide. The arrayed lens can correct the deviated diffractive beams due to thermal deformation of the diffractive grating and conduct them into the arrayed waveguide.

Planar optical waveguide dense wavelength division multiplexer

The invention provides a planar waveguide diffractive 1&times;N beam splitter/coupler. It utilizes an integrated circuit fabrication process to fabricate an integrated optic. A Fourier transform diffractive optical element (DOE) is formed on one end of a planar waveguide (planar lightwave circuit; PLC). Thus, an incident beam coming from one end of the planar waveguide can be diffracted into a plurality of output beams. On the other hand, a plurality of incident beams coming from one end of the planar waveguide can be coupled into one output beam. The beam splitter/coupler is easy to fabricate, small in size and more flexible for applications.

Planar waveguide diffractive beam splitter/coupler

A diffractive anti-counterfeiting tag structure with capabilities of naked-eye inspection and machine inspection and its method of manufacture. The anti-counterfeiting tag structure has a naked-eye inspection component and a machine inspection non-grating diffractive component. The naked-eye inspection component and the non-grating diffractive component are formed on separate mold-boards and then joined together to form a mold-board using a board-joining technique. Alternatively, a plurality of naked-eye inspection blocks and a plurality of non-grating diffractive blocks are randomly mixed together to form a pixel-like diffractive anti-counterfeiting tag.

Diffractive anti-counterfeiting tag with naked-eye inspection and machine inspection

An apparatus for producing a dot matrix hologram is provided, which can fabricate a hologram of high quality, simplify the construction, and reduce the cost. This apparatus includes a laser source for providing a laser beam to form interference fringes, in which the laser beam is split and then overlapped to form interference fringes in a small region; an interference spot-adjusting system for adjusting the area of the small region by controlling the diameter of the cross section of the laser beam; an interference spot-revolving system for changing the direction of the interference fringes in the small region; a two-dimensionally movable platform, on which a recording substrate that is used to form a dot matrix hologram can be placed, for adjusting the position of the recording substrate; a shutter for controlling the exposure intensity by controlling the time that the laser beam passes through the shutter; a computer, for controlling the shutter to pass a laser beam of a predetermined intensity, and then controlling the interference spot-adjusting system to change the diameter of the cross section of the laser beam that is split and interfered in the interference spot-revolving system, to thereby form an interference spot on the recording substrate, thereafter sequentially forming other interference spots on different positions of the recording substrate by adjusting the direction of the interference fringe in the interference spot and moving the movable platform to accomplish the production of a dot matrix hologram for the predetermined image.

Growing community of inventors

Hsinchu, Taiwan

Ying-Tsung Lu