CN214472725U

CN214472725U - Lovibond colorimeter calibration device

Info

Publication number: CN214472725U
Application number: CN202120175660.9U
Authority: CN
Inventors: 高红波; 李红梅
Original assignee: National Inst Of Metrology & Test Technology
Current assignee: National Inst Of Metrology & Test Technology
Priority date: 2021-01-22
Filing date: 2021-01-22
Publication date: 2021-10-22
Anticipated expiration: 2031-01-22

Abstract

The utility model discloses a luowepo colorimeter calibrating device, including four color discs that the structure is the same: the color disc comprises an R color disc, a Y color disc, a B color disc and an N color disc; the four color discs are rotatably connected through a connecting shaft penetrating through the center, corresponding standard Lovibond color filters are arranged on the circumference of the same radius of each color disc according to the size sequence of chromatic values, and the chromatic values of the Lovibond color filters corresponding to the color filters are marked beside each color filter; and each color disc is also provided with a vacant light through hole. The utility model has simple operation and stable placement, solves the limitation of color filter measurement and installation and use in regulations, and can effectively measure the chromatic value of Lovibond; the measurement error caused by the deviation of the placement position of the optical filter is avoided, and the air pollution is reduced because the standard optical filter is in a closed space; the working strength of the verification personnel is reduced, and the working efficiency is improved.

Description

Lovibond colorimeter calibration device

Technical Field

The utility model relates to a colorimeter calibration and technical field specifically are a luowepo colorimeter calibrating device.

Background

The Lovibond colorimeter adopts a special Lovibond color system and a Lovibond color unit, can well achieve the purpose of color measurement, and is an internationally recognized authoritative color measuring instrument.

The traditional method for detecting/calibrating the Lovibond colorimeter adopts three reference oils, namely dark reference oil, medium reference oil and light reference oil as standards, but the reference oil is unstable and is easy to react with air, and the color of the reference oil is lighter and lighter. The calibration protocol also mentions that the standard color filter can be used for calibration, but the standard color filter needs to be combined for use, and is inconvenient to install and use.

The Lovibond color filter is a color filter glass sheet for measuring the Lovibond color system, and consists of 4 colors of R-red, Y-yellow, B-blue and N-, wherein each color is light to dark, and the Lovibond chroma value is R (0.1-79.9) Lovibond units; y (0.1-79.9) Lovibond units; b, (0.1-49.9) Lovibond units; n is 0.1-3.9 Lovibond units. Usually, 4 colors of R-red, Y-yellow, B-blue and N-are needed to be combined for measurement.

However, the luvibond filter has the following disadvantages: 1) the Lovibond color filter is thin, cannot be directly placed in a sample chamber of the colorimeter, and is required to be arranged on a fixed bracket or adhered to the wall of the sample chamber, so that the operation is very inconvenient; 2) Lovibond color filters are generally combined for use, and if the Lovibond color filters cannot be coaxially concentric during combination, a large measurement error is brought; 3) when the tolerance of the Rovibond color filter is verified, the color filter to be detected corresponds to the chroma value of the standard color filter one by one, so that the standard color filter needs to be frequently replaced, the placement positions of the standard color filter also need to be consistent, and the requirement on a verification worker is higher; 4) standard luvibond filters are generally stored individually and are prone to contamination and even corrosion in long term contact with air.

SUMMERY OF THE UTILITY MODEL

In view of the above problems, an object of the present invention is to provide a calibration device for a luvibond colorimeter, which can realize the random combination of 4 luvibond colors, and can ensure the consistency of the center positions of the combined color filters, and has a relatively sealed space to reduce air pollution. The technical scheme is as follows:

a Lovibond colorimeter calibration device comprising four color wheels of identical structure: the color disc comprises an R color disc, a Y color disc, a B color disc and an N color disc; the four color discs are rotatably connected through a connecting shaft penetrating through the center, corresponding standard Lovibond color filters are arranged on the circumference of the same radius of each color disc according to the size sequence of chromatic values, and the chromatic values of the Lovibond color filters corresponding to the color filters are marked beside each color filter; and each color disc is also provided with a vacant light through hole.

Further, a sealing ring is arranged between two adjacent color discs; the sealing ring comprises a raised edge ring arranged on the periphery of a standard Lovibond color filter on one color disc and a recessed groove ring arranged on the adjacent surface of the adjacent color disc, and the edge ring is embedded into the groove ring.

The utility model has the advantages that: the utility model has simple operation and stable placement, solves the limitation of color filter measurement and installation and use in regulations, and can effectively measure the chromatic value of Lovibond; the measurement error caused by the deviation of the placement position of the optical filter is avoided, and the air pollution is reduced because the standard optical filter is in a closed space; the working strength of the verification personnel is reduced, and the working efficiency is improved.

Drawings

Fig. 1 is a schematic structural diagram of the calibration device of the luoweppon colorimeter of the present invention.

Fig. 2 is a schematic structural diagram of the color wheel of the calibration device of the luvibond colorimeter of the present invention.

Fig. 3 is a schematic view of the structure of the sealing groove of the color wheel outer ring of the calibration device of the luowepo colorimeter of the present invention.

In the figure: 1-color disc; 2-a connecting shaft; 3-standard luvibond color filters; 4-edge ring; 5-groove ring.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments. As shown in fig. 1 and 2, the calibration device for a luvibond colorimeter of the present invention comprises four color discs 1 with the same structure: the four color discs 1 are rotatably connected through a connecting shaft 3 penetrating through the center; corresponding standard Lovibond color filters 2 are arranged on the circumference of the same radius of the outer edge of each color disc according to the size sequence of chromatic values, and the corresponding Lovibond chromatic values are marked beside each color filter; and each color disc is also provided with a vacant light through hole.

The utility model discloses according to the principle of rotatory mathematics magic cube, adopt a series of coaxial circular color discs, be equipped with the standard luowepun color filter of different chromatic values on the color disc, through stirring the color filter on every color disc, select suitable color filter combination, can simulate the standard oil of any colour. Color filters with various chromatic values are sequentially arranged on each color disc from small to large, and each color disc is provided with a vacant light through hole.

A sealing ring is also arranged between two adjacent color discs 1 in the embodiment; the sealing ring comprises a raised edge ring 4 arranged on the periphery of a standard Lovibond color filter 2 on the color disc 1 and a groove ring 5 recessed on the adjacent surface of the adjacent color disc, and the edge ring 4 is embedded in the groove ring 5. Therefore, the two color discs 1 can rotate mutually, and meanwhile, due to the action of the sealing ring, the pollution of air to the standard Lovibond color filter 2 in the ring can be reduced, and meanwhile, the pollution caused by the fact that the hands of the verification personnel touch the color filter is also avoided.

This example is fitted with standard luvibone filters of red, yellow, blue, and 4 of these colors, respectively. During calibration, a color disc is rotated to select proper color filter combination simulation standard oil, the reading of the selected standard color filter is read as a standard value, the calibration device is placed in a sample chamber of the Lovibond colorimeter, the colors of the two visual fields are observed through a eyepiece sleeve, the color filters on the Lovibond colorimeter are adjusted until the colors of the two visual fields are matched, the reading of the Lovibond colorimeter is read as a measured value, and the instrument accuracy of the Lovibond colorimeter is obtained by subtracting the standard value from the measured value.

All standard Lovibond optical filters of the device are arranged on a coaxial color disc, the peripheral size of the color disc is consistent with that of a sample frame, the color disc can be stably placed on the sample frame and cannot be inclined or toppled, the standard Lovibond optical filters are positioned in the middle of a measuring light spot, and the measuring accuracy is improved; when the standard optical filter is replaced, the device does not need to be taken out, and only the chromaticity coaxial color disc needs to be slightly shifted, so that the operation of a calibrating worker is greatly simplified, and the consistency of the measurement positions is ensured; the standard optical filter of the device is arranged in a relatively closed space, so that the pollution of the optical filter is reduced, and the work of the color filter for cleaning by a calibrating personnel is lightened.

Claims

1. A calibration device for a Lovibond colorimeter, characterized in that it comprises four color discs (1) of identical structure: the color disc comprises an R color disc, a Y color disc, a B color disc and an N color disc; the four color discs (1) are rotatably connected through a connecting shaft (3) penetrating through the center, corresponding standard Lovibond color filters (2) are arranged on the circumference of the same radius of each color disc according to the size sequence of chromatic values, and the corresponding Lovibond chromatic values are marked beside each color filter; and each color disc (1) is also provided with a vacant light through hole.

2. The calibration device for a Lovibond colorimeter according to claim 1, wherein a sealing ring is further provided between two adjacent color discs (1); the sealing ring comprises a raised edge ring (4) arranged on the periphery of a standard Lovibond color filter (2) on one color disc (1) and a groove ring (5) recessed on the adjacent surface of the adjacent color disc, wherein the edge ring (4) is embedded into the groove ring (5).