Projection type low-light night-vision visual system

A visual system and low-light technology, applied in the field of visual optical systems, can solve problems such as bulky volume and weight, and achieve the effects of reducing volume and weight, lowering the center of gravity, and easily correcting aberrations

Inactive Publication Date: 2007-05-23
NANKAI UNIV
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The color technology has higher requirements for the visual sy

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  • Projection type low-light night-vision visual system
  • Projection type low-light night-vision visual system
  • Projection type low-light night-vision visual system

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Embodiment Construction

[0021] The projection objective lens designed by the present invention includes a diaphragm, two negative lenses and four positive lenses, and FIG. 1 is a structural schematic diagram of the projection objective lens of the present invention. Its characteristics are: the diaphragm 1-4 is located in the middle, and there are a negative lens 1-3 and 1-5 on both sides, and then two positive lenses 1-1, 1-2, 1-6, 1- 7. The image planes 1-8 in FIG. 1 are used as the projection object plane in actual use, that is, the output surface on which the image intensifier is placed. Figure 24 is the MTF curve, field flexion and distortion curve and spot diagram of the objective lens on planes 1-8. The figure shows that the MTF of each field of view of this projection objective lens reaches above 0.6 (at 60lp / mm), the maximum distortion is only 0.15%, and the spot diagram RMS diameters of 0, 0.7, and 1.0 fields of view are only 5.2, 3.5, 6.0μm, fully meet the requirements of use. This syst...

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Abstract

The invention discloses a night-vision glasses, which belongs to the visual optical system. The invention is of a six projection microscope objective lens. Against output wavelength of 546nm and the output surface of the effective diameter of 16mm, resolution of 60lp/mm image intensifier design. This invention is a projection lens for the ''straight look'' and ''see-through (enhanced)'' night-vision glasses visual projection system chart, including the image intensifier output surface of the projection lens, and the spectroscope back-to-screen. Visual projection system replaces the traditional eyepiece system, with lighter weight, smaller size, and better image quality visual system than the traditional eyepiece. This invention provides a brand new design ideas and concepts for the night-vision of the visual design of the optical system.

Description

technical field [0001] The invention relates to low-light night-vision glasses, which belong to a visual optical system for low-light night vision. Background technique [0002] Low-light night vision technology is one of the two main pillars of night vision technology, also known as image enhancement technology. Since the 1960s, with the continuous improvement of image intensifier performance, low-light night vision technology has achieved rapid development. From the Gulf War to the US-Iraq War, people have paid more and more attention to the role of low-light night vision technology, which is the key to victory in night battles. In the future battlefield, low-light night vision technology will play an increasingly important role. [0003] In order to improve the night combat capability of troops, low-light night vision technology has always been a technical field that developed countries focus on. The United States has always been a leader in this field. So far, indivi...

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Application Information

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IPC IPC(8): G02B13/16G02C7/00G02B27/18
Inventor 王肇圻赵顺龙
Owner NANKAI UNIV
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