Light intensity-based electronic feedback manual zoom lens

Abstract

The invention provides a light intensity-based electronic feedback manual zoom lens, which is convenient to operate, stable in performance, simple in structure and low in cost, and is capable of effectively reducing the unreliability of human operation and greatly improving the work efficiency. The light intensity-based electronic feedback manual zoom lens comprises a manual zoon lens main body and an electronic feedback device connected with the manual zoon lens main body, wherein the manual zoon lens main body comprises a lens adapter, an upper lens barrel and a lower lens barrel, which aresequentially connected and arranged from top to bottom; a rotating shaft sleeve is rotationally connected with the inside of the upper lens barrel; optical signal reflectors are also arranged on the rotating shaft sleeve at intervals in a ring; light passing holes are formed in the upper lens barrel corresponding to the optical signal reflectors; the electronic feedback device comprises an electronic feedback base, an optical signal transmitting unit, an optical signal receiving unit and a signal processing unit; the optical signal transmitting unit, the optical signal receiving unit and the signal processing unit are arranged on the electronic feedback base; the electronic feedback base is fixed on an outer wall of the upper lens barrel; the optical signal transmitting unit and the optical signal receiving unit are toward the optical signal reflectors through the light passing holes; and the optical signal receiving unit is connected with a subordinate device.

Description

technical field [0001] The invention relates to the technical field of optical equipment, in particular to an electronic feedback manual zoom lens based on light intensity. Background technique [0002] In the prior art, when the manual continuous zoom lens is used in various measurement environments, most of them rely on manual visual reading of the magnification value of the current position of the lens indicated on the scale circle of the lens, and then the read current position of the lens Manually input the magnification value of the lens to the lower-level equipment (mostly PC) connected to the lens, but in this process, it is difficult to ensure accurate information on whether the lens is adjusted to the exact position of the current magnification when adjusting the magnification, and errors are prone to occur Read the situation of the magnification value of the lens, and every time the lens is adjusted, it is necessary to manually read the magnification value of the ...

AI Technical Summary

Problems solved by technology

[0002] In the prior art, when the manual continuous zoom lens is used in various measurement environments, most of them rely on manual visual reading of the magnification value of the current position of the lens indicated on the scale circle of the lens, and then the read current position of the lens Manually input the magnification value of the lens to the lower-level equipment (mostly PC) connected to the lens, but in this process, it is difficult to ensure accurate information on whether the lens is adjusted to the exact position of the current magnification when adjusting the magnification, and errors are prone to occur Read the situation of the magnification value of the lens, and every time the lens is adjusted, it is necessary to manually read the magnification value of the current position of the lens, and then manually input the read magnification value of the current position of the lens to the lower-level equipment connected to the lens, In this way, not only the operation is cumbersome, but also the working efficiency of the manual confirmation method is relatively low, and it is also prone to errors during manual input; in addition, this continuous zoom lens with magnification adjustment instructions includes a position detection signal emission and optical signal receiving unit, a position detection Signal reflectors, etc., to achieve electronic information feedback capabilities. The position detection signal reflector is used as an electronic feedback device, which reflects the detection signal from the position detection signal transmitting and optical signal receiving unit back to the position detection signal transmitting and optical signal receiving unit. , the position detection signal reflector is fixedly installed on the main body of the manual focus lens, and rotates synchronously with the manual focus lens main body, and the position detection signal reflector is provided with light reflectors arranged in a Gray code coding manner to mark positions. The light reflector is electrically connected to the position detection signal transmitter and optical signal receiver unit, provides power for the position detection signal transmitter and optical signal receiver unit, and decodes the signal from the position detection signal transmitter and optical signal receiver unit to the lower level connected to it equipment, but the electronic feedback system of the continuous zoom lens with magnification adjustment instructions needs more than three photoelectric receivers, and a certain number of holes need to be drilled on the lens barrel. The electronic feedback system is relatively complicated, and the design and production The cost is also higher

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