CN2286311Y - Signal lens light transmittance nondestructive detector - Google Patents

Abstract

The utility model relates to a nondestructive detector of signal lens luminous transmittance, which relates to an optical measuring device. The utility model is especially suitable for the nondestructive measurement of the signal lens luminous transmittance for railways. The device is composed of special collimators, a special integrating ball system, optical fibers, and a set of special transmitting type standard sampling plates for calibration and indication and is matched with the existing monochromator system and the existing microcomputer system. The device uses the collimator with a large aperture to illuminate a signal lens. The special integrating ball system is used for receiving transmitted light of the signal lens and carries out the measure of light splitting, calculation, and calibration to the transmitted light so as to obtain the luminous transmittance and color coordinates of the whole signal lens. The utility model has the advantages of nondestructive measurement and reliable data; safety of railway traffic can be ensured.

Description

The saturating border of signal transmittance damage-free measuring apparatus

The utility model relates to a kind of optical measuring device, is specially adapted to the measurement of railway signal lens light transmittance.Railway signal lens light transmittance is the key that influences the wigwag range of a signal.At present inconsistent to the qualification of signal lens transmittance index and detection method thereof and the actual operating position of signal lens, only depend on the inner little test piece of taking-up to measure, do not reflect the actual light transmission of monolithic lens, simultaneously be again a kind of destructive measurement, the lens after the measurement can not re-use, and the lens of use are energy measurement not, this measurement be separating of use very irrational, cause underproof lens to sneak into the scene easily, influence the wigwag display effect, jeopardize traffic safety.

The purpose of this utility model is the shortcoming that overcomes prior art, for the monoblock signal lens is not damaged carry out transmittance and color measuring provides a kind of special measurement device.

The technical solution of the utility model is to realize like this: a kind of nondestructive measurement of signal lens transmittance is by parallel light tube, D.C. regulated power supply, digital voltmeter, integrating sphere, silicon fiber, monochromator, photomultiplier, receiving system power supply and amplifier, microcomputer, a printer and a cover special test standard jig are formed, its special character is that parallel light tube adopts long-focus, the large aperture, anaberrational parallel light tube, on the bracing frame of parallel light tube and integrating sphere, all be equipped with and adjust screw assurance parallel light tube and integrating sphere entrance window centrally aligned, have on the incidence window of integrating sphere for the anchor clamps that signal lens or standard jig are installed, the standard testing model is by red, yellow, green, blue, month be 90% from the transmission-type Standard colour board and the transmittance of five kinds of colors, 75%, 50%, the transmission-type standard jig of 25% 4 kind of different transmittance is formed, after the parallel beam that parallel light tube sends shines detected signal lens and its standard jig respectively, the light that transmits carries out outputing to the monochromator entrance slit by light transmitting fiber after luminosity is handled through integrating sphere it is carried out spectroscopic measurements and the data of measuring are imported computing machine comparing, and then measurement result is printed.

The utility model advantage compared with prior art is to measure full aperture light transmittance of colourful signal lens and color coordinates, also can measure colourless signal lens, adopt the spectral luminosity method measuring condition to be consistent with actual service conditions with the Standard colour board calibration, measuring speed is fast, good reproducibility, reliable results has improved the quality of signal lens, guarantees that colour light signal shows and safety of railway traffic.

Now describe the utility model most preferred embodiment in conjunction with the accompanying drawings in detail:

Fig. 1 is a signal lens transmittance damage-free measuring apparatus structural representation.

Fig. 2 is the parallel light tube structural representation.

Fig. 3 is the integrating sphere structural representation.(Fig. 3-a front view, Fig. 3-b side view)

Fig. 4 is a transmission-type Standard Colors model structural representation.

Fig. 5 is a transmission-type standard transmittance model structural representation.

A kind of signal lens transmittance damage-free measuring apparatus as shown in Figure 1, 2, 3.Parallel light tube 1 adopts the long-focus of f=1200mm, the large aperture aplanasia aberration object lens 14 of D=250mm, to guarantee the quality of parallel beam.Luminophor locus three-dimensional in the parallel light tube 1 is adjustable, can make after accurately adjusting the directional light angle of divergence less than 1 ', its light source is with the power supply of high precision D.C. regulated power supply, to satisfy the parallel beam stability requirement.Adjusting gear is all arranged on the base of parallel light tube 1 and integrating sphere 5, adjust parallel light tube adjustable supports 12 and integrating sphere adjustable supports 13 and can guarantee parallel light tube optical axis and integrating sphere entrance window centrally aligned.The exit window of integrating sphere 5 connects special-purpose light transmitting fiber 6, and the two ends shape of this light transmitting fiber 6 entrance slit shape with the exit window of integrating sphere 5, monochromator 7 respectively is consistent, makes luminous energy be full of the monochromator entrance slit.Through being Φ 600mm, be added with baffle plate between its entrance window and exit window in the integrating sphere 5, this structure can guarantee measuring accuracy.On the incidence window of integrating sphere 5, have for the anchor clamps 15 that signal lens 4 or standard testing model 16 and 17 are installed, according to the measured signal lens sizes, color and integrating sphere incidence window size, the utility model has been made red, yellow, green, blue, bluish white five kinds of colors, be of a size of the special-purpose transmission-type Standard colour board 16 of 75 * 75 * 1mm, it is respectively by HB610, CB3, LB1, QB5, YB1 optical glass is made, also having made four kinds of transmittances is 90%, 75%, 50%, 25%, be of a size of the special-purpose transmission-type standard jig 17 of 85 * 85 * 1mm, they are respectively by neutral optical glass AB90, AB75, AB50, AB25 makes.The receiver window of photomultiplier 8 is aimed at the exit slit of monochromator, and by 9 power supplies of receiving system power supply, and the photocurrent of its generation is sampled by microcomputer 10 and deposited internal memory in through amplifier (also in 9) and interface circuit.Step motor drive is divided light scanning apparatus in the monochromator 7, and its driving circuit links to each other with microcomputer by interface, and sweep speed is subjected to system controlled by computer.

The course of work of the present utility model is as follows:

The light source of parallel light tube 1 is by D.C. regulated power supply 2 power supplies, and by digital voltmeter 3 its terminal voltages of monitoring, the parallel beam that its parallel beam that sends sends through the objective lens 14 of parallel light tube shines measured signal lens 4 or the transmission-type standard jig 16 that is fixed on integrating sphere 5 incidence windows with anchor clamps 15, on 17, repeatedly reflect the back through integrating sphere 5 inner wall surface and form uniform illuminance, incide the whole entrance slit of monochromator 7 then by integrating sphere outgoing window and special-purpose silicon fiber 6, the monochromator splitting system is with its beam split then, simultaneously photomultiplier 8 receives in the exit slit of monochromators 7 spectral energy and produces photocurrent, microcomputer 10 is gathered these photocurrents and is deposited microcomputer 10 internal memories in digital form by certain wavelength interval by interface circuit, then tested signal lens 4 is taken off from integrating sphere 5 incidence window anchor clamps, change with its color and the corresponding standard jig of transmittance and test, microcomputer compares processing to the data of twice collection successively, can draw signal lens transmittance nondestructive measurement result, at last test result is shown on display, also can print by printer 11.Its transmittance measuring accuracy reaches 1%, and the color coordinates measuring accuracy reaches Δ X, Δ Y≤0.005.

Claims (1)

1, a kind of signal lens transmittance damage-free measuring apparatus is by special-purpose parallel light tube, D.C. regulated power supply, digital voltmeter, special-purpose integrating sphere, silicon fiber, monochromator, photomultiplier, receiving system power supply and amplifier, microcomputer, a printer and a cover special test standard jig are formed, it is characterized in that special-purpose parallel light tube adopts long-focus, the large aperture, anaberrational parallel light tube, the adjustment screw all is housed on the bearing support of parallel light tube and integrating sphere, guarantee the optical axis and the integrating sphere entrance window centrally aligned of parallel light tube, have on the incidence window of integrating sphere for the unit clamp that signal lens or standard jig are installed, the standard testing model is by red, yellow, green, blue, the transmission-type Standard colour board of bluish white five kinds of colors and transmittance are 90%, 75%, 50%, the transmission-type standard jig of 25% 4 kind of different transmittance is formed, after the parallel beam that parallel light tube sends shines detected signal lens and its standard jig respectively, the light that transmits carries out being input to the monochromator entrance slit again by light transmitting fiber after luminosity is handled through integrating sphere and under system controlled by computer it is carried out spectroscopic measurements and data processing, then the result is printed.

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