Micro accurate slit arrangement with adjustable slit width

An adjustable and small technology, applied in the direction of measuring devices, instruments, scientific instruments, etc., can solve the problems of complex structure and large volume, and achieve the effect of high precision, small size, and reduced space size
CN101532876AInactive Publication Date: 2009-09-16UNIV OF SCI & TECH OF CHINA
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
UNIV OF SCI & TECH OF CHINA
Publication Date
2009-09-16
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a micro accurate slit arrangement with adjustable slit width for various spectrographic instruments, which solves the problems of the prior adjustable slit arrangement of complicated structure, low precision and large volume. The slit arrangement comprises an elastic hinge body, a left slit slice, a right slit slice and a driving mechanism and the clearance between the adjacent edges of the left slit slice and the right slit slice is slit; a middle junction rigid body is mounted on the top of the elastic hinge body and one end is connected with a left upper connection rod and another two ends are respectively connected with a left right-angle rigid body and a right right-angle rigid body; the left right-angle rigid body and the right right-angle rigid body are respectively connected with a left tie bar and a right tie bar; the left tie bar and the right tie bar are respectively connected with a left rigid body and a right rigid body; the left rigid body and the right rigid body are respectively connected with more than two left support bars and right support bars; the driving mechanism is a differential micro-meter screw and steps screwed holes mated with the differential micro-meter screws are vertically set on the frame basal-body top and the middle connection rigid body on the elastic hinge body; the parallelism and symmetry of the slit are good. The slit arrangement has features of simple structure, compactness, small size and high accuracy.
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Description

technical field

[0001] The invention belongs to the technical field of optical precision machinery design and processing, and relates to a small precision slit device with adjustable slit width that can be used in various spectroscopic instrument systems or other instrument systems that require precise adjustment of the slit width. Background technique

[0002] In spectroscopic instruments, the spectrum of different wavelengths is spread out in space. The monochromatic light of a certain wavelength range is taken out through the slit, and the position and intensity of the monochromatic light are recorded by the detector, so that the composition of the substance can be analyzed. In this process, the slit plays a very important role, and its opening parallelism, symmetry, uniformity of opening and closing, slit width and resolution all require high requirements. The above indicators of the slit directly affect the spectral resolution and / or spatial resolution of the spectrosc...

Claims

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