ISO 11064-4:2013 コントロールセンターの人間工学的設計—パート4：ワークステーションのレイアウトと寸法 | ページ 6

3.1

control workstation

single or multiple working position, including all equipment such as computers and communication terminals and furniture at which control and monitoring functions are conducted

[SOURCE:ISO 11064‑3:1999, 3.7.]

3.2

cone of fixations

angular extent to which the line of sight can be swept by rotating the eyeball in the skull while the head rests

3.3

legibility

ability for unambiguous identification of single characters or symbols that may be presented in a non-contextual format

[SOURCE:ISO 9241‑302:2008, 3.3.35.]

3.4

line-of-sight

line connecting the point of fixation and the centre of the pupil

Note 1 to entry: The line-of-sight with two eyes is the line connecting the point of fixation and the midpoint between the two pupils

[SOURCE:ISO 9241‑302:2008, 3.3.36.]

3.5

nearpoint

nearest viewing distance to which the eye accommodates

3.6

normal line-of-sight

inclination of the line-of-sight with respect to the horizontal plane, when the muscles assigned for the orientation of the eyes are relaxed

3.7

percentile

value of a variable below which a certain percentage of observations fall

3.8

reach envelope

three-dimensional space in which an operator can comfortably reach and manipulate controls by either hand while assuming a posture normally anticipated for the task

3.9

task zone

space determined by the equipment and activities required for the conduct of a particular task

3.10

visual angle

angle subtended at the eye by the viewed object, e.g. a character or symbol

3.11

visual field, field of vision

physical space visible to an eye in a given position

[SOURCE:ISO 8995:1989, 3.1.10.]

Note 1 to entry: In this standard the use of both eyes is assumed for visual field considerations.

Note 2 to entry: The position of the visual field depends on the direction of the line-of-sight.

Note 3 to entry: Separate, distinct stimuli in the visual field will be detected even if they appear simultaneously.

Note 4 to entry: While the extent of the visual field is approximately ± 35° around the line-of-sight, only between 1° and 2° of these are for sharp vision.

3.12

work environment

physical, chemical, biological, organizational, social and cultural factors surrounding a worker

[SOURCE:ISO 6385:2004, 2.6.]

3.13

work space

volume allocated to one or more persons in the work system to complete the work task

[SOURCE:ISO 6385:2004, 2.15.]

3.14

workstation

combination of work equipment for a particular person in a work space

[SOURCE:ISO 11064‑2:2000, 3.5.]

Note 1 to entry: It is possible that several persons may share a particular control workstation, or that several persons alternate several workstations within any period of time (i.e. on an hourly, daily, weekly basis).

3.15

work task

activity or set of activities required by the worker to achieve an intended outcome

[SOURCE:ISO 6385:2004, 2.17.]