In this section, the following term is used with the meaning indicated:
"variable" (as a noun) means a feature or property (e.g., a dimension, a physical condition such as temperature, a quality such as density or colour) which, in respect of a particular entity (e.g., an object, a quantity of a substance, a beam of light) and at a particular instant, is capable of being measured; the variable may change, so that its numerical expression may assume different values at different times, in different conditions or in individual cases, but may be constant in respect of a particular entity in certain conditions or for practical purposes (e.g., the length of a bar may be regarded as constant for many purposes).
Attention is drawn to the definitions of terms or expressions used, appearing in the notes of several of the classes in this section, in particular those of "measuring" in class Fulltext... Hierarchy... Expanded...G01 and "control" and "regulation" in class Fulltext... Hierarchy... Expanded...G05.
Classification in this section may present more difficulty than in other sections, because the distinction between different fields of use rests to a considerable extent on differences in the intention of the user rather than on any constructional differences or differences in the manner of use, and because the subjects dealt with are often in effect systems or combinations, which have features or parts in common, rather than "things", which are readily distinguishable as a whole. For example, information (e.g., a set of figures) may be displayed for the purpose of education or advertising (Fulltext... Hierarchy... Expanded...G09), for enabling the result of a measurement to be known (Fulltext... Hierarchy... Expanded...G01), for signalling the information to a distant point or for giving information which has been signalled from a distant point (Fulltext... Hierarchy... Expanded...G08). The words used to describe the purpose depend on features that may be irrelevant to the form of the apparatus concerned, for example, such features as the desired effect on the person who sees the display, or whether the display is controlled from a remote point. Again, a device which responds to some change in a condition, e.g., in the pressure of a fluid, may be used, without modification of the device itself, to give information about the pressure (Fulltext... Hierarchy... Expanded...G01L) or about some other condition linked to the pressure (another subclass of class Fulltext... Hierarchy... Expanded...G01, e.g., Fulltext... Hierarchy... Expanded...G01K for temperature), to make a record of the pressure or of its occurrence (Fulltext... Hierarchy... Expanded...G07C), to give an alarm (Fulltext... Hierarchy... Expanded...G08B), or to control another apparatus (Fulltext... Hierarchy... Expanded...G05).
The classification scheme is intended to enable things of a similar nature (as indicated above) to be classified together. It is therefore particularly necessary for the real nature of any technical subject to be decided before it can be properly classified.
PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY (reproduction of pictures or patterns by scanning and converting into electrical signals Fulltext... Hierarchy... Expanded...H04N) [4]
G03
Note(s)
In this class, the following terms are used with the meaning indicated:
"records" means photographs or any other kind of latent, directly-visible or permanent storage of pictorial information, which consist of an imagewise distribution of a quantity, e.g. an electric charge pattern, recorded on a carrier member;
"optical" applies not only to visible light but also to ultra-violet or infra-red radiations. [4]
APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR (optical parts of such apparatus Fulltext... Hierarchy... Expanded...G02B; photosensitive materials or processes for photographic purposes Fulltext... Hierarchy... Expanded...G03C; apparatus for processing exposed photographic materials Fulltext... Hierarchy... Expanded...G03D) [4]
G03B
Note(s)
This subclass covers, as far as processes are concerned, only processes characterised by the use or manipulation of apparatus classifiable per se in this subclass.
G03B
Subclass index
DETAILS
Common to at least two of cameras, projectors and printers
Adjustment of optical system relative to image or object surface other than for focusing of general interest for cameras, projectors or printers
G03B 5/02
·
Lateral adjustment of lens
G03B 5/04
·
Vertical adjustment of lens; Rising fronts
G03B 5/06
·
Swinging lens about normal to the optical axis
G03B 5/08
·
Swing backs
G03B 7/00 - G03B 17/00
Details common to cameras
P:130
G03B 7/00
Control of exposure by setting shutters, diaphragms, or filters separately or conjointly (measuring intensity of light Fulltext... Hierarchy... Expanded...G01J; control of exposure in television cameras by means of circuitry for compensating for variation in the brightness of the object Fulltext... Hierarchy... Expanded...H04N 5/235)
G03B 7/08
·
Control effected solely by response to built-in light-sensitive device to the intensity of light received by the camera
G03B 7/091
· ·
Digital circuits [3]
G03B 7/099
· ·
Arrangement of photoelectric elements in or on the camera [3]
G03B 7/16
·
in accordance with both the intensity of the flash source and the distance of the flash source from object, e.g. in accordance with "guide number" of flash bulb and the focusing of the camera
G03B 7/18
·
in accordance with light-reducing "factor" of filter or other obturator used with or on the lens of the camera
G03B 7/20
·
in accordance with change of lens
G03B 7/24
·
automatically in accordance with markings or other means indicating film speed or kind of film on the magazine to be inserted in the camera [3]
G03B 7/26
·
Power supplies; Circuitry or arrangement to switch on the power source; Circuitry to check the power source voltage [3]
G03B 7/28
·
Circuitry to measure or to take account of the object contrast [3]
In this group, the following term is used with the meaning indicated:
"picture" means any flat representation, whether transparent or not, e.g. produced by photography, writing, or printing.
P:180
G03B 25/00
Viewers, other than projection viewers, giving motion-picture effects by persistence of vision, e.g. zoetrope (high-speed photography Fulltext... Hierarchy... Expanded...G03B 39/00)
Automatic registration or positioning of originals with respect to each other or the photosensitive layer (within photo-mechanical production of textured or patterned surfaces, e.g. of integrated circuits, Fulltext... Hierarchy... Expanded...G03F 9/00) [4]
Associated working of cameras or projectors with sound-recording or -reproducing means (record carriers characterised by the selection of the material and comprising cinematographic film and magnetic track Fulltext... Hierarchy... Expanded...G11B 5/62)
Obtaining records using waves other than optical waves; Visualisation of such records by using optical means (investigating or analysing materials using electromagnetic or sonic waves Fulltext... Hierarchy... Expanded...G01N; using radar, sonar or analogous techniques Fulltext... Hierarchy... Expanded...G01S) [4]