33results about How to "Few optics" patented technology

The invention relates to a laser measurement system capable of detecting 21 geometric errors. One of a workpiece clamping part and a cutter clamping part is provided with a laser six-freedom-degree simultaneously measuring unit and a laser ray veering unit, and the other is provided with a geometric error sensitive unit. The laser ray veering unit is provided with a plurality of switchable work gestures or a composition composed of a plurality of parts under an installation state. Through rotation or horizontal movement, the laser beams sent by the laser six-freedom-degree simultaneously measuring unit can be splitted in sequence or rotated to a direction that is parallel to the X axis, Y axis, and Z axis; and the laser beams from the geometric error sensitive unit can be splitted or veered to the laser six-freedom-degree simultaneously measuring unit. The provided system has the advantages of simple structure, convenient operation, once installation, and multi-step measurement, and can detect 21 geometric errors of three linear moving guide rails that are perpendicular to each other. (The figure 3 is the abstract figure.)

The invention is a two-way 2X2 optical switch and the 4X4 free space optical switch made up of the former one, which belongs to optical communication device, especially relates to optical passive device in full gloss communication network, the structure is compact, and it has no relation to polarization, the two-way 2X2 optical switch is only made up of polarization beam-splitting compound prism, lambda / 4 wave plate, lambda / 2 wave plate, direct angle prism, holophote and polarization light modulator, the 4X4 optical switch has light model structure, and it has no relation to the control of optical signal and the polarization state of the incidence beam. All the output ports and the input ports can interchange without obstacles. The structure is compact, and it can be widely applied to optical communication field.

The invention discloses a composite structure type tunable grating outer cavity dual-mode laser machine. The composite structure type tunable grating outer cavity dual-mode laser machine comprises a gain component, a lens, a grating and a plane mirror, wherein light emitted from the end face of one side of the gain component is collimated by the lens and then irradiated to the surface of the grating in a incident mode (the incident angle is theta), and diffraction is generated, two beams of diffraction light which are lambda 1and lambda 2 in wave length move forward along the following two paths respectively: firstly, the m level diffraction light which is lambda 1in wave length goes back to the gain component in the incident direction along the same path from which the light comes, wherein m is an integer except zero, and the diffraction angle is equal to the incident angle theta, so that a laser mode which is lambda 1in wave length is formed between the grating and the end face of the other side of the gain component, and secondly, the n level diffraction light which is lambda 2 in wave length goes back to the gain component in the incident direction along the same path from which the light comes after being reflected by the plane mirror and secondly diffracted by the grating, wherein n is an integer except zero and not equal to m, and the diffraction angle is phi, so that a laser mode which is lambda 2 in wave length is formed between the plane mirror and the end face of the other side of the gain component through the grating.

The invention relates to a system and method of utilizing the two-step phase-shifting coaxial holographic technology to realize 90 DEG phase shift and calibration. The method comprises: establishing a mach-zehnder double beam plane quasi coaxial holographic optical path system, and separately adding a standard glass slide into an object optical path and a reference light path; adding a condensing lens into the object optical path to converge with the plane of the reference light path to form spherical interference fringes; the spherical interference fringes being distributed in a Sinc function, fine tuning a rotating platform to allow the center of a Sinc function distribution curve to be a maximum value; continuing fine tuning the rotating platform, allowing the center of a sampled Sinc function distribution curve to be a minimum value; and removing the condensing lens in the object optical path, placing a tested sample, and marking according to twice scale values of the rotating platform so as to collect two holograms with 90 DEG phase shift. The recording device referred in the method has the characteristics of less optical elements, simple structure, convenient operation, high adjusting precision, and low cost, and can realize 90 DEG phase shift and calibration in the two-step phase-shifting coaxial holographic technology.

The invention relates to a novel polarized uncooled infrared focal plane detector, comprising a semiconductor base, a metal reflection layer, an insulating medium layer, a support layer, a protective layer, a metal electrode layer, and a heat-sensitive layer, wherein the protective layer includes a first protective layer. layer and a second protective layer, the second protective layer is arranged on the thermosensitive layer, the second protective layer is provided with a polarization structure, and the polarization structure includes a grating support layer and is arranged on the grating support layer The metal grating structure adopts the inverted micro-bridge. There is no supporting pier under the micro-bridge, so the structure is not easy to deform; it adopts a three-layer micro-bridge structure, the first layer is an infrared radiation absorption structure, the second layer is a thermal insulation micro-bridge structure, and the third The three layers are polarized structures, which can effectively improve the filling factor of pixels and improve the absorption efficiency of incident infrared radiation; it also relates to a preparation method of a novel polarized uncooled infrared focal plane detector. The two sacrificial layers can be continuously etched, and the wafer surface Very flat.

The invention discloses a red light semiconductor area array light source device for laser display. The red light semiconductor area array light source device for laser display comprises a VCSEL area array and a microlens array, wherein the VCSEL area array at least comprises a plurality of VCSEL units which are used for emitting circular laser beams, and the microlens array is formed by a plurality of microlens and used for performing collimation rounding on the laser beams output by the VCSEL area array and outputting the laser beams. The light source device can reduce optical elements in a projection display optical path, shorten the length of a lighting optical path, and improve the optical energy utilization rate. In addition, the VCSEL area array can reduce interference between VCSEL lasers and weaken laser speckles, and therefore projection display quality is improved. According to the red light semiconductor area array light source device, the area array light source packaging technology and VCSEL are adopted, a two-dimensional array is easy to integrate, and the defect that power transmitted by a single tube is poor can be overcome. The VCSEL is available in wafer test, reduces cost greatly and is easy in modularization and packaging.

The invention discloses an endoscope fiber Raman probe and a detection device. The endoscope fiber Raman probe comprises a lens, a circular ring lens, a filtering layer, a circular ring filtering layer, a center optical fiber bundle, a Raman collection optical fiber, an optical fiber cable, a connecting piece, a center optical fiber bundle branch and a Raman collection optical fiber branch; the Raman collection optical fiber annually surrounds the center optical fiber bundle; the lens and the filtering layer are arranged at the front end of the center optical fiber bundle; the circular ring lens and the circular ring filtering layer are arranged at the front end of the Raman collection optical fiber; the combined optical fiber bundle of the Raman collection optical fiber and the center optical fiber bundle extends through the optical fiber cable; the other end of the optical fiber cable is divided into a Raman collection optical fiber bundle and an excitation / endoscope optical fiber bundle by the connecting piece. According to the endoscope fiber Raman probe disclosed by the invention, integrated design of optical fiber Raman and optical fiber endoscope is realized; the device hasthe advantages of small volume, low price, high flexibility and accurate detection, and is more applicable to biological in-vivo and in-situ Raman detection, and is relatively easy and convenient to maintain.