A femtojoule level laser micro energy meter capable of measuring and observing simultaneously
A micro-energy, femtojoule-level technology, applied in the field of laser measurement, can solve the problem of not being able to observe and aim the target of laser energy measurement, and achieve the effect of accurately measuring the target energy
Inactive Publication Date: 2012-08-01
BEIJING INSTITUTE OF TECHNOLOGYGY
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[0006] The purpose of the present invention is to solve the problem that the femto-joke laser micro-energy meter in the prior art cannot simultaneously measure the laser energy and observe and aim at the target, and proposes a femto-joke laser micro-energy meter that simultaneously performs measurement and observation. energy meter
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[0029] In order to better illustrate the purpose and advantages of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.
[0030] The femto-focus laser micro-energy meter for simultaneous measurement and sighting of the present invention includes an optical system, a photoelectric conversion system, a signal processing and display system, and a power supply, such as figure 1 Shown; Wherein optical system is made up of the first convex lens 1, the second convex lens 2, concave lens 3, eyepiece (7 and 8) and beam splitter 4, three lens groups are coaxial, three lens groups and beam splitter The arrangement sequence of the mirror 4 is the first convex lens 1, the second convex lens 2, the concave lens 3 and the beam splitter 4; the center of the beam splitter 4 is on the optical axis of the three lenses side by side, the three lenses, the beam splitter 4 and the The eyepieces form a te...
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The invention relates to a femtojoule level laser micro energy meter, especially to a femtojoule level laser micro energy meter capable of measuring and observing simultaneously. The invention belongs to the technical field of laser measurement. The femtojoule level laser micro energy meter comprises an optical system, a photoelectric conversion system, a signal processing and displaying system, and a power supply. The optical system includes a first convex lens, a second convex lens, a concave lens, a beam splitter mirror, an ocular lens and a reticule. The three lenses in the group lie alongside and coaxially. The central point of the beam splitter mirror is in an optical axis of the three lenses arranged side by side; the ocular lens is in a focal point of the beam splitter mirror on one side and the reticule is disposed on the ocular lens. The photoelectric conversion system includes an optical filter, a photoelectric detector and a preprocessor. The photoelectric detector lies coaxially with the group of the three lenses and the beam splitter mirror and is movable. The photosensitive surface center of the photoelectric detector is at a focal point of the group of the three lenses. The minimum laser energy density that the energy meter in the invention can measure is 1.96 fJ / cm2; the range of observation and aiming is 1 meter to the infinite. Moreover, moving objects can be observed and aimed by the energy meter in the invention.
Description
technical field [0001] The invention relates to a femto-joke laser micro-energy meter, in particular to a femto-joke laser micro-energy meter with synchronous measurement and aiming, belonging to the technical field of laser measurement. technical background [0002] In recent years, with the advent of laser guidance, laser ranging and other products, the detection of diffuse reflection echo energy of long-distance laser targets has also been put on the agenda. It requires the minimum value of the detected light energy to be several fJ / cm 2 . At the same time, since it is required to be able to track and measure moving targets, the energy meter must have the function of synchronously measuring and observing aiming. [0003] The minimum measurable energy of the existing pulsed laser micro-energy meter is 800fJ / cm 2 , is a product developed by the China Institute of Metrology in recent years. Its shortcoming is that it cannot measure less than 800fJ / cm 2 It is composed of d...
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IPC IPC(8): G01J1/42G01J1/04
Inventor 王茜蒨彭中林幼娜
Owner BEIJING INSTITUTE OF TECHNOLOGYGY