RU2276395C1 - Method for quantitative estimation of clock face and its elements identification duration - Google Patents

Abstract

FIELD: clock making industry.

SUBSTANCE: method for quantitative estimation of duration of clock face and its elements identification includes determining minimal time, required for reading clock indications at given light saturation level from one or several points of measuring distance, positioned between clock face and limiting distance of clock indications reading, for that either eyes of observer with given natural sight sharpness are utilized, or that achieved by wearing glasses, in conjunction either with mechanism, opening curtain for clock face tester observation for given duration with certain light level, or with equipment, lighting clock face with given duration and certain light level. By changing duration of clock face observation by observer, minimal time is recorded needed for reading clock indications by observer, as quantitative estimate of clock face and its elements identification duration.

EFFECT: introduction and use of objective quantitative coefficient - minimally required time for reading clock indications.

1 dwg

Description

The invention relates to the watch industry. In the watch industry there is no such quantitative, numerical, parameter as the duration of reading the clock, i.e. establishing a recognizable object in its image, expressed in units of time (1). It was assumed that the owner of the watch always had enough time to read the clock. Imagine the owner of a car or a pilot who glanced briefly at a watch, or a passenger of a bus who looked at a street clock - everyone has the minimum time to read the clock. The time has come to increase the requirements for the watch dial and its elements and to reduce the time for reading the clock and entering the numerical value of the minimum reading time in the technical passport of the watch.

The problem to which the invention is directed is to propose a method that provides objective quantitative, digital, measurement of the minimum duration of reading of all types of clock readings at distances, for example, 0.7 and / or 0.3 from the maximum reading range in order to refine the dial and its elements at any given level of illumination.

The technical result of the invention is:

- the introduction and use of an objective quantitative indicator - the minimum necessary duration for reading clock readings in units of time at specified illumination levels, including in complete darkness for watches with self-contained illumination or with luminous hands and hour markers;

- the possibility of introducing into the technical passport of the watch the duration of reading the clock, which will help the buyer when choosing a watch;

- increased competition for watch companies for reducing the duration of reading readings, primarily automobile, army and street watches through the use of new technical solutions.

The specified problem is solved by the fact that they use:

- as an objective optical device, the eyes of a tester with a given natural visual acuity, go achieved with glasses, for example, equal to 1, in combination with a mechanism that opens the curtain for the tester to see the dial for a given duration with a certain level of illumination or equipment that illuminates a dial with a given duration with a certain level of illumination;

- as the duration of the opening of the curtain or the time of illumination of the dial changes, the minimum duration of reading the clock in units of time is fixed for a given level of illumination of the dial;

- measured distance for setting a predetermined distance at which the reading duration is fixed.

The drawing shows a block diagram of a device that implements the method.

The device consists of an optical device "1" (eyes of the tester) with a given visual acuity, for example 1, in combination with a shutter mechanism "2" that opens the tester with an overview of the dial "3" for a specified time, changing the duration of the watch’s viewing, the tester fixes the minimum time ( minimum viewing time) required to read the clock at a given level of illumination provided by the lighting equipment "4" from one or more points of the measured distance "5"; between the dial “3” and the maximum reading range of the clock “6”.

The variant using the dial backlighting equipment is not shown (instead of the mechanism with a shutter, the dial backlighting equipment is installed for a specified time).

The numerical value of the minimum duration of reading the clock at a given point of the measured distance, for example, equal to 0.5 of the limiting reading range of the clock at a certain level of illumination, characterizes the ability to quickly read the clock, which is important for automobile, aviation, army and street watches.

Large firms need to adopt a unified methodology for determining the minimum duration for reading hours.

Information sources

1. Materials of the Moscow international exhibition of watches, November 2003.

Claims (1)

A method for quantifying the identification time of a dial and its elements, which includes determining the minimum time required to read the clock at a given level of illumination from one or more measuring distance points located between the dial and the maximum reading range of the clock, for which either the eyes of the tester with a given visual acuity, or achieved with glasses, in combination with or with a mechanism that opens the shutter for review to the dial tester on a specified duration with a certain level of illumination, or with equipment that illuminates the dial with a given duration and with a certain level of illumination, while changing the duration of the watch’s review of the dial, the minimum time required to read the clock by the tester is recorded as a quantitative estimate of the duration of the identification of the dial and its elements.