CN1194384A - Wide range focusing camera - Google Patents

Abstract

In a wide range focusing camera, a cooperating engagement members are provided in moveable parts of a focusing mechanism and an aperture opening selecting mechanism so as to force the latter into selecting a smaller one of the aperture opening areas when the focusing mechanism is actuated into moving the lens to the position suitable for a close range shot. At the same time, a strobe light is enabled. Thus, the focal depth can be increased, and a clear picture of a close range object can be taken without regard to the condition under which the object is placed in relation with the surrounding objects. Also, a three-dimensional object having a depth can be photographed at close range with a satisfactory result. Because a number of settings required for such close-up shots are instantaneously set either manually by hand or automatically by an auto-focusing mechanism, it is possible even for an inexperienced photographer to take clear pictures of objects at close range.

Description

Wide range focusing camera

The present invention relates to a kind of wide range focusing camera, can in scope, shoot object picture clearly, particularly, relate to a kind of wide range focusing camera that can in utmost point short range, shoot clear object picture at width.

Usually, camera, particularly minicam only can clearly be shot at least at 1 meter object picture far away.Some have the photograph function of grand pattern and clearly shoot near to 60cm object picture far away.Yet the photo that these camera go out is usually unsatisfactory, and this is because can not be to being in the forward and backward cause of object adequate focusing on every side of central object.Particularly can not focus on satisfactorily whole object object with 3D shape, degree of depth.In addition, except certain professional camera, can not to utmost point short range for example distance range be that the object of 10-30cm is shot clear photograph.

The reason that is difficult to overcome these defectives is that camera lens must be crossed big distance so that aim at these short ranges and infinitely long-range.Having considered to pack in camera to make camera lens move past lens driving mechanism as big distance in the normal camera, but can't realize aspect technology and commercial two.In addition, the camera lens of these cameras can't be provided at the enough depth of field that utmost point short range is taken three-dimensional body.It is still the most basic need not make any complicated adjusting for the people that use minicam.

In view of the problem of prior art, fundamental purpose of the present invention provides a kind of simple camera, can in addition only shoot clear photograph from camera for the object of 10-30cm, and can not diminish the ability that camera covers infinity.

Second purpose of the present invention provides a kind of simple camera, can guarantee a big depth of field that does not also have so far when short range is taken pictures.

The 3rd purpose of the present invention provides a kind of simple camera, has grand operator scheme and be suitable for ordinary consumer to use.

According to the present invention, above-mentioned and other purposes can be achieved by a kind of wide range focusing camera is provided, this wide range focusing camera comprises: the camera lens of mobile cameras with selected one can clear photographed the lens moving apparatus of distance range, to change the volume circle opening modifier of camera volume circle opening, the lighting device of contrast phase object illumination, and the selector switch of selecting normal manipulation mode and special grand operator scheme; Described normal manipulation mode is defined as scenery location in the normal relatively distance range of described camera lens, and described volume circle opening is chosen to be and normally finds a view, the grand operator scheme of described spy is defined as described camera lens relatively adjacent to scenery location in the short range of normal distance range, and described volume circle opening reduces so that suitable mutually with the startup of the lighting device of described short range.Preferably, selector switch comprises the comprehensive button regulated of being necessary of single or two.According to principle of the present invention, the volume circle opening that is used for special grand operator scheme generally is scheduled to.

Like this, according to the present invention,, then also can shoot satisfied photo to the short range object for the layman because the adjusting knob that makes camera be suitable for the short range shooting can obtain with single operation.Particularly, by reducing volume circle opening, can increase the depth of field during selected special grand pattern, need not to consider and the match state of the object placed of object on every side, can clearly shoot object picture in the short range.Thereby, can shoot satisfied result to the three-dimensional body that the degree of depth is arranged.When selected special grand pattern, by starting as strobelight or flashlamp, the increase depth of field that requires can be chosen than rouleau circle open area and can not cause any under-exposure of film.Although the present invention is intended for use photography camera, be used in the digital camera that focussing plane has the CCD image sensor equally.In order to make camera not have any far away, near scope of interruptedly aiming at fully, normal distance range and closer distance scope are preferably overlapped.

Control piece not only can manually also can be by motor-driven.Under latter instance, motor can drive according to the output signal that range sensor comes, thereby automatically focuses, and can automatically select grand pattern when detecting the object that will take in short range the time.

Volume circle open area can be decided by for example a plurality of aperture control of any well known organization blade.Because desired volume circle opening is quite little during selected special grand pattern, volume circle opening can be decided by being formed with a plurality of volume circle openings on it and being suitable for selecting moving the movable plate that encloses on the optical axis that opening is placed on camera lens with a volume that will be selected, the institute that perhaps a plurality of apertures control blades can be combined decide, and one its go up and form a volume and enclose opening and be suitable for selecting mobile will roll up the movable plate that encloses on the optical axis that opening is placed on camera lens.

In order to cover nearlyer scope, selector switch also allows to select the big operator scheme of supermacro, this pattern is defined as the nearer distance range location that makes camera lens adjacent with the grand distance range of described spy relatively, start described lighting device, and volume circle opening reduces with suitable mutually with the driving at the lighting device at described more short range place.At this moment, volume circle opening also can be scheduled to, closer distance scope and more short range can be overlapped.

More particularly, the invention provides a kind of wide range focusing camera, comprise: camera lens is selected to move to be suitable for respectively finding a view more at a distance and the focusing of two diverse locations that closer distance is found a view, be used to limit the volume circle opening selection mechanism of at least two different volume circles open areas, be used to drive focusing camera lens is moved to the control piece of one of two positions being limited, and be positioned at engage part on the movable part of focusing and the selection mechanism of volume circle opening, will roll up the selection mechanism of circle opening when short range is found a view the position and move to and select volume to enclose less one in open area in the focusing action camera lens is moved to be suitable for.

Owing to can not influence the setting that normal manipulation mode is selected to be suitable for by existing mechanism, the empty actuation mechanism that can pack in mechanism focusing and the selection mechanism of volume circle opening are matched is selected when being suitable for long-range and finding a view the position and is selected less one in the glitch-free volume circle of volume circle open area part open area thereby the selection mechanism of volume circle opening can be positioned at camera lens.

When the needs fully automatic mode is selected or is needed the motor power model selection, the present invention can provide a kind of wide range focusing camera, comprise: camera lens is selected to move to be suitable for respectively that quite long distance is found a view and the focusing of two diverse locations that suitable short distance is found a view, be used to limit the volume circle opening selection mechanism of at least two different volume circles open areas, drive the 1st motor of focusing, drive the 2nd motor of volume circle opening selection mechanism, and the 2nd circuit of matching with the 1st motor of motor, thereby the selection mechanism of volume circle opening can move to less one that selects volume circle open area when being suitable for suitable short distance and finding a view the position at camera lens.

At this moment, require to have two motors, but the focusing mechanism consistent with the selection mechanism of volume circle opening can be simplified.In addition, camera also has the autofocus mechanism that the signal that comes according to range sensor drives the 1st motor.

Below, with reference to description of drawings the present invention, wherein,

Fig. 1 illustrates the front view that uses minicam of the present invention,

Fig. 2 illustrates the partial perspective view of camera,

Stereographic map cuts open in the office that Fig. 3 illustrates camera lens assembly illustrated in figures 1 and 2,

Fig. 4-7 illustrates the synoptic diagram of lens assembly its inner structure under different operation modes,

Fig. 8 illustrates the synoptic diagram of the present invention the 2nd embodiment,

Fig. 9 illustrates the synoptic diagram of the focus stroke a that changes with object distance,

Figure 10 illustrates the view that concerns between the depth of field and focal length and object distance,

Figure 11 illustrates the depth of field and encloses the view of opening relation with volume,

Figure 12 illustrates the synoptic diagram of receivable strobelight range and the focal length that is used for different volume circle openings and object distance,

Figure 13 illustrates the synoptic diagram of grand with the spy in supermacro large model selection lens location and volume circle opening one example,

Figure 14 illustrates the view of the 3rd embodiment of similar Fig. 2,

Figure 15 illustrates the block scheme of the functional structure of the 3rd embodiment.

Fig. 1 is the front view that adopts minicam of the present invention.Camera lens 2 is placed on camera body 1 front, center, and is centered on by rosette 3.Be integral with rosette 3 and radially stretch out as the operator scheme selector 4 of the device of moving lens.

Operator scheme comprises the non-operation mode (O) that covers camera lens with the baffle plate (not shown), at 1.0m or farther normal manipulation mode (a normal operativemode) (N) apart from the shot object photo, the big operator scheme of supermacro (an ultra super macro mode) of the special grand operator scheme of shot object photo in the distance range of 30cm-1.0m (a super macro operative mode) shot object photo (SM) and in the distance range of 10cm-30cm (USM).By using model selection bar 4, rosette 3 is gone to one of its corresponding four angle positions just can select each operator scheme.

Below, with reference to the inner structure of Fig. 2 and 3 these cameras of explanation.Cam lens barrel 5 and rosette 3 are fastened to the inside of camera body 1 coaxially.The maintainance set 6 that keeps camera lens 2 in it with axially slidably pattern be placed in coaxially in the cam lens barrel 5, and be installed on the rosette 3 with being integral, rosette 3 has the model selection bar 4 that is integral protrusion with it, thereby maintainance set 6 is with 4 rotations of model selection bar.

From whole cam pin 6a that protrudes of maintainance set 6 outer circumference surfaces and the spiral prominence race 5a engagement that is located on cam lens barrel 5 outer walls.As a result, the rotation of the maintainance set 6 that engages with cam path 5a along with cam pin 6a, maintainance set 6 moves axially.The pitch of cam path 5a is designed to quicken reach along with bar 4 goes to supermacro large model position maintainance set 6 from the normal manipulation mode position.This is because when using the camera lens of fixed focal length, along with reducing of object distance, and the cause that the displacement of focus increases gradually.Like this, by swingle 4, camera lens 2 moves axially, thereby determines a focus according to object distance on the film surface.

In maintainance set 6, pack into a kind of aperture control gear or iris ring mechanism.The aperture control gear can be a traditional type, comprises a plurality of aperture control blade 7a.Aperture control blade 7a is connected by ring 7b, and ring 7b is placed in the maintainance set 6 coaxially, thereby the vary in diameter of the central opening 7c that the overlap condition of aperture control blade 7a limits with the rotation of ring 7b with by aperture control blade 7a changes synchronously.Ring 7b can together move axially with maintainance set 6.

Shutter 10 is positioned between aperture control gear and film surface, as among Fig. 3 shown in the imaginary line.Camera body 1 also comprises a shutter release button 11 and a flashlamp 12.

Fig. 4-7 shows the synoptic diagram of Fig. 1-3 illustrated embodiment operator scheme.In order to be easy to explanation, geometric relationship changes between the shape of each part and each parts, is inaccurate.

In the present embodiment, ring 7b has and is integral leading thread with it to outward extending joint fastener 7d, and the interior perimeter surface of maintainance set 6 has the engaging arms 6b that inwardly stretch in the footpath, and it engages with joint fastener 7d.Ring 7b also has the actuating arm 7e that all-in-one-piece with it engages with aperture control lever 8, be used for changing the volume circle opening of normal manipulation mode, between the fixed part of actuating arm 7e and camera body 1, be connected with draft helical spring 9, thereby the edge increases the direction of aperture control gear aperture to the ring 7b application of force.

The bias force that aperture control lever 8 overcomes spring 9 engages with actuating arm 7e.The position of aperture control lever 8 is regulated by motor or solenoid according to the signal that not shown optical sensor comes, and perhaps manually is provided with simply by the camera user.

Below with reference to Fig. 4-7 description operation pattern.When with camera 1.0m or more during far object, the aperture control gear is set at does not need strobelight just can absorb on the numerical value of photo in quite bright environment.When model selection bar 7 was in normal operating position (N), engaging arms 6b was disengaged sheet 7d as shown in Figure 4.

In this normal manipulation mode, under situation, for example when night or indoor taking pictures, manually or by the optical sensor that detects the light deficiency start strobelight 12 at insufficient light.Then, along the automatic or manual of direction shown in arrow B aperture control lever 8 among Fig. 4 until arriving assigned address.As a result, under the effect of draft helical spring 9, actuating arm 7e follows aperture control lever 8 and moves, and ring 7b is counter rotation in the drawings, opens state greatly thereby opening 7c is in Fig. 5.Like this,, suitably select Fig. 4 and arbitrary state shown in Figure 5, take pictures by pressing shutter release button 10 according to surrounding environment light power at normal operating position.Also can be placed on aperture control lever 8 on the selected location number according to the light power of light sensors or be placed on Fig. 4 and two condition shown in Figure 5 between the arbitrary position that can select continuously.

When needing selected special grand pattern (SM) when the object of shooting distance 30cm-1.0m, operator scheme selector 4 is gone to special grand mode position (SM) along Fig. 4 arrow C direction.With maintainance set 6 all-in-one-piece engaging arms 6b when Fig. 6 arrow D direction moves to position shown in Figure 6 because cam pin 6a moves along cam path 5a, and camera lens 2 is pushed away forward.Like this, aperture control blade 7a moves in the direction that minimizing volume circle opening 7c diameter for example reduces to 1.2mm.For example, by maintainance set 6 and the suitable frictional resistance that cam cover 5 cooperatively interacts and produces, can make maintainance set 6 not influenced by the elastic force of extension spring 9 and remain on illustrated stationary state.If necessary, can use suitable arrestment mechanism so that model selection bar 4 is remained on each select location.

When in fact this special grand pattern is used for the 35mm camera of focal length 35mm, the object that leaves camera 70cm is carried out the focal length adjustment, aperture control is selected in F22, starts strobelight 12.In this special grand pattern, can shoot the photo that distance range is the object of 30cm-1.2m satisfactorily.This pattern can suitably shot still life in the yardstick, fruit, drawing, insect, fresh flower, the clear pictures of porcelain or the like.

When model selection bar 4 when further direction shown in the arrow D goes to the big position of supermacro (USM) in Fig. 4, maintainance set 6 turns over predetermined angle, till engaging arms 6b moves to position shown in Figure 7.The diameter of aperture openings 7c further reduces, for example to 0.7mm.The aperture control position is arranged on F44.In this supermacro large model (USM), camera lens 2 is pushed to anteposition, thereby makes camera lens 2 be suitable for forming the image of the object that leaves camera 17cm on the film surface.

This supermacro large model (USM) in fact is applied to the camera of special grand pattern (SM).This set can the scope of adjusting the distance be that the object of 10cm-40cm is taken clear photograph.Particularly, when object left camera 10cm, the object image on the standard-sized photo approximately was 1.7 times of physical size, and this pattern can make object not need any amplification and modification with the yardstick record that amplifies.

Each of these grand patterns is by selecting a set condition such as lens location, and aperture control position and use strobelight are limited.These are provided with and can also can obtain by the electric model of pack in camera CPU and motor driver by the mechanical mode acquisition of rotary mode selector as mentioned above.

The aperture control blade that is used for some minicam might be unsuitable for obtaining high-precision rouleau circle opening.By in grand pattern of spy and supermacro large model, being provided with the plate 13 of aperture 13a and 13b, and can avoid the problems referred to above before or after plate 13 is placed on aperture control blade 7a.Plate 13 in the embodiment shown in fig. 8 pivotally is supported on centring point 13c place, thereby each aperture 13a and 13b can aim at the aperture openings 7c of aperture control gear, and by with plate 13 all-in-one-piece sector gear 13d through idle pulley 14 and the engagement that is formed on the annular wheel 6c on the maintainance set 6, the rotational synchronization of its swing and maintainance set 6.

According to embodiment illustrated in fig. 8, plate 13 is in the retracted position that breaks away from aperture control blade 7a, i.e. normal manipulation mode shown in the dotted line.When selected special grand pattern (SM), plate 13 rotates to position shown in Fig. 8 solid line along the pivot of direction shown in the arrow E, and volume circle opening by among the aperture 13a that aims at optical axis in the plate 13 relatively large one decide.Similarly, when selected supermacro large model (USM), replacing aperture 13a's is the minimum aperture 13b that aims at optical axis.

When using aperture to control the definite volume circle of blade 7a opening 7c, can be not only at normal manipulation mode and all can change volume continuously and enclose opening in grand pattern, rather than step-type, limited setting.Equally, can be not only at normal manipulation mode and comprising focusing continuously in the four corner of normal manipulation mode and grand pattern.As needs, can cancel aperture control blade 7a thereby plate can have three or more hole, and can obtain needed aperture size.Also special grand pattern can only be arranged outside normal manipulation mode, rather than have two grand patterns.

According to the present invention, can obtain the bigger depth of field, thereby the attribute that need not consider the object that will take is by the operator scheme of selected camera just can be at take if having time clear photograph simply.As long as suitable optical condition reaches, do not influence yet and be arranged on intermediate range to unlimited long-range object and take.

To illustrate below and how design special grand operator scheme.

Just as discussed previously, along with model selection bar 4 moves to special grand and the big operator scheme of supermacro (SM and USM) from normal manipulation mode (N), because concerning tight shot, along with the ratio from the mobile increase of the shortening of shot object distance, camera lens focus increases gradually, so must increase the possible range of camera lens to reach.

With reference to Fig. 9, focus on the former design focus (film surface) from the unlimited long-range incident beam that passes through camera lens.Yet, when passing camera lens, can focus on a distance after the former design focus from the incident beam of limited distance.Like this, dwindle the focus rollback along with distance between camera and the shot object.In the camera, along with dwindling of distance object distance, camera lens pushes away forward, and focus always is in the film surface.

Further specify with reference to Figure 10-13 and to use focal length to be the camera lens of 25mm (f=25mm) and the camera of ISO100 film.Yet, for those skilled in the art obviously, also be suitable for same principle when using different camera lenses with different film.

In the chart of Figure 10, horizontal ordinate is represented distance between camera and shot object (scope), and ordinate represents that focus leaves the stroke a of former design focus.Be clearly shown that as chart along with the shortening of distance between camera and shot object, the corresponding stroke a of focus increases gradually.Particularly, zone between normal manipulation mode and special grand pattern (common distance) at about 1m, focus stroke a increases rapidly.Like this, must make camera lens move very big distance to allow camera closely take pictures.Such lens displacing mechanism needs quite complicated and expensive mechanism.Common one of the reason that can not closely take pictures of camera that Here it is.

Each camera lens all has can have the image of allowing sharpness to be molded over the lip-deep distance range of film.Image definition is decided by the size of circle of least confusion, in this example, is defined as the numerical value of 0.05mm.According to this index, the figure of Figure 10 expresses apart from the depth of field of four kinds of different distance of shot object.These distances selected is each the mid point that lens location is arranged on four kinds of different stroke range S1-S4.Along with to the reducing of shot object distance, the rate of change of camera lens stroke a (S1-S4) increases gradually, and the depth of field (H1-H4) reduces gradually simultaneously.

For example, when camera lens moved to the mid point of camera lens stroke range S1 or move to apart from object 3.2m position far away, the depth of field was unlimited in the distally, at the about 1.6m of nearside.When camera lens further is extrapolated to when being suitable for taking the position of 1.3m far object (scope S2 mid point) slightly, by distance range H2 the depth of field is shown and reduces to be 1.0m to 2.0m.When camera lens further was extrapolated to the position (scope S3 mid point) that is suitable for taking the 0.45m far object, the depth of field further reduced, and is approximately 0.42m to 0.53m (H3).When camera lens further was extrapolated to the position (scope S4 mid point) that is suitable for taking the 0.37m far object, the depth of field further reduced, and is approximately 0.24m to 0.30m (H4).

Like this, when camera during, be difficult to obtain correct focal length gradually to extremely near object focus.Even obtained suitable focal length and the depth of field is too little, to such an extent as to the object of three-dimensional dimension can not focus on as a whole.And any known focalizer no more than 30cm of camera object far away that is unsuitable for adjusting the distance is taken.

According to the present invention, solved this problem, when the selected special grand or big operator scheme of supermacro was taken pictures to extremely near object, volume circle opening reduced significantly.Figure 11 illustrates by reducing to roll up the circle opening is how to increase the depth of field.Three bands of Figure 11 chart bottom are represented the relative 0.2m of camera lens respectively, the depth of field the when object localization of 0.5m and 1.5m distance and volume circle opening are F5.6.The depth of field when depth of field the when band at chart middle part is represented the object localization of the relative 0.5m distance of camera lens and roll up the circle opening to be F22, the band at chart top are represented the object localization of the relative 0.2m distance of camera lens and roll up the circle opening to be F44.

By chart as can be known, approximately the scope from 0.1m to infinity can be by three different lens location band letter lids by suitably reducing to roll up the circle opening.In addition, the depth of field of each lens location and adjacent one overlapping, and it so takes satisfied three-dimensional dimension photo with activation to the object from utmost point short range to infinite distance greatly.Two short bands that dot in chart bottom illustrate, when volume circle opening does not reduce, the depth of field so little so that not only three lens locations can not have the photo that interruptedly suitably covers short range but also can not take the three-dimensional dimension object of correct focusing in short range.

According to traditional camera, lens location moves to the position that is suitable for shot object, and selects shutter speed and volume circle opening according to object brightness.Only when using up deficiency, object just drives lighting device.Therefore, when the principle of this traditional camera is used for the camera of grand picture photographing mode by development, do not get in touch between the driving of lighting device and the grand picture photographing mode, in fact the significant minimizing of the depth of field makes camera can not realize the purpose of being scheduled to.

Grand or the supermacro large model according to spy used in the present invention need not to detect to the distance of object or the brightness of object, and need not to change shutter speed, and the driving of lighting device need not to consider surrounding environment.Equally, the volume circle opening of lens location and significantly minimizing is scheduled to for every kind of selected grand pattern.Significantly the volume circle opening that reduces is able to balance by driving the object brightness that lighting device increased.Object is near apart from camera or lighting device, and the brightness value of object will be very high, makes volume circle opening significantly reduce.When the ISO of film light sensitivity was 100, the optimal brightness of strobelight can be calculated by following formula.

(strobelight index)/(camera lens F value)

When film sensitivity was increased to ISO200, being equivalent to volume circle opening increased by one grade.When film sensitivity when 100 increase to 400, being equivalent to volume circle opening increases by two grades.As everyone knows, film has certain exposure latitude, and this time limit combines with certain adjusting in the developing process and is formed on brighter side and approximately improves third gear and approximately improve the exposure range of two grades of degree in dark side from standard value.

Figure 12 illustrates ten different distance location of the relative shot object of camera lens and selected corresponding the roll up acceptable strobelight range and the depth of field when enclosing opening.Wherein, distance range is 0.1m-1.0m, and wherein increment is 0.1m.Each leukorrhea represents to consider acceptable strobelight illumination under the film normal exposure scope.Each shadow band is represented the scope by corresponding depth of field covering.The scope that is covered by leukorrhea and shadow band of each lens location or each volume circle opening is actually the scope that can shoot the satisfied photo of object relatively.

In fact, by Move Mode selector 4 (if this mechanism is contained on the camera) Move Volumes circle opening and lens location serially.In addition, sectional is regulated volume circle opening and lens location.In the illustrated embodiment, select volume circle opening and lens location with described traditional segmented model.

Figure 13 illustrates an example of the grand operator scheme that comprises two steps.In abutting connection with normal manipulation mode and have some overlapping special grand operator schemes to comprise that relative lens location and volume circle opening apart from object 0.5m is F20.Also there is the big operator scheme of some overlapping supermacros to comprise that relative lens location and volume circle opening apart from object 0.2m is F50 with it in abutting connection with special grand operator scheme.From then on chart as can be known, camera can cover the distance of 0.1m to infinity without interruption.

The circle of least confusion that is suitable for the design standards of illustrated embodiment is that 0.05m can obtain the high-quality photos under the arm's length standard.The strobelight that is used for illustrated embodiment is made of the inexpensive strobelight device in the minicam of packing into, and proof is suitable for obtaining high-quality photo in whole distance range.Distance between camera and the shot object is answered the distance between Measuring Object and film surface, but also can be approximated to be near the distance between camera lens front end and the object.The correctness higher as needs, the distance between film surface and the camera lens can add that camera lens is to the distance between object.

The present invention makes simple, inexpensive photograph function shot object in the short range that can only be used special camera to carry out so far by the professional photographer.Traditional camera is adapted as camera of the present invention cost is very little must to increase cost hardly.For example, be the camera of 25mm for focal length, require the camera lens stroke of coverage distance scope will be 0.6-0.7mm from 1.0m to infinity.For the camera that is suitable for the short range shooting of the present invention, the camera lens stroke must be increased to 4.5-4.8mm.For the 35mm focus camera, desired camera lens stroke will be 7-8mm.The inventor has been found that and need not traditional low-cost camera is made the camera lens stroke that great improvement just can obtain this order of magnitude.The increase of desired camera lens stroke is directly proportional with the focal length increase of camera lens.

Shutter speed can change when selecting grand pattern, for example can reduce.But the inventor has confirmed that the exposure range of commercial film is so big so that the special grand or big shooting of supermacro that the shutter speed when need not to change normal manipulation mode just can be satisfied with.Particularly, thus the light of strobelight is dispersed the duration that very short effectively shutter speed is determined by strobelight.It is useful especially aspect minimizing camera cost to need not to change shutter speed.

Illustrated embodiment is usually based on manual select operating mode, but also operator scheme can be selected automatically to needed degree.For example, as shown in Figure 14, the special grand button 15 of selecting special grand pattern (SM) and the supermacro large model button 16 of selecting supermacro large model (USM) can be housed on camera body 1 top.The additional button of selecting between non-operation mode (O) and the normal manipulation mode (N) can also be housed on the camera body.

When the expectation short range is taken, press arbitrary grand button 15 or 16.This will cause cam lens barrel 5 rotation predetermined angulars.Like this, camera body 1 rotating support cam lens barrel 5, and maintainance set 6 and rosette 3 are with axially slidably but can atwirl pattern be installed on the camera body 1.It is described with previous embodiment or other traditional arrangement are identical with the inner structure of rolling up the circle opening to focus.

Figure 15 illustrates the functional structure of the 3rd embodiment.Switch 15 links to each other with CPU21 with 16, and CPU the 1st motor 22 and the driving volume of controlling and driving focusing 23 successively encloses the 2nd motor 24 of the selected mechanism 25 of opening.CPU21 is programmed to when any of switch 15 and 16 closed can suitably regulate focusing 23.Simultaneously, CPU21 forces the selected mechanism 23 of volume circle opening to close closed-book circle opening on demand.Preferably, when selected arbitrary grand pattern, CPU also can start strobelight 12.For full-automatic operate camera, in the camera range sensor 20 can be housed, thereby, just can regulate focusing 23 by camera being aimed at simply the object that will take pictures.

So, according to the present invention, thereby can realize that by a single operation one group of setting makes camera be suitable for short range and takes, even the layman also can shoot satisfied photo in short range.Particularly,, can increase the depth of field, need not consider just can shoot the clear pictures of short range object with the match state of the object placed of environment object by reducing volume circle opening when the selected grand pattern.By when selecting grand pattern, starting strobelight or flashbulb, can avoid any possibility of exposure deficiency.

The camera that is used as traditional low price of taking fast picture with consideration is different, has developed the possibility of the new purposes of camera that is used for various purposes such as data preparation.For example, camera of the present invention can be used for medical science (taking the forward and backward ill organ of treatment), and teaching (is taken toy, insect, plant and mineral), civil engineering work and building element (taking the interesting buildings and the various parts of furniture), court, (fish is cooked in shooting to in-house operation, fresh flower is arranged, artifacts, braiding, lace and sewing work), and other possibilities.Camera of the present invention does not need any specialty to help just can take these photos easily, simply.

The present invention is illustrated according to preferred embodiment, for those skilled in the art, can make various variations and change obviously in the scope that does not exceed appended claims of the present invention.

Claims (24)

1. omnidistance camera comprises:

Be used for the lens moving apparatus of moving lens with mobile its focus,

Be the aperture stopping device of the selected volume circle of described camera lens opening,

The lighting device of illumination photograph object, and

Control the switchgear of described lens moving apparatus, aperture stopping device and lighting device, described switchgear is suitable for being chosen in outside the normal mode of shot object photo in the normal range zone the special grand pattern of shot object clear pictures in the wide short range zone;

When selecting the grand pattern of described spy by described switchgear,

In fact described lens moving apparatus will move to desired more forward than normal mode to the camera lens of unlimited distance object focus, so that to being positioned at the object focus in described short range zone,

Described aperture stopping device is selected the rouleau circle opening of regulation, can shoot the big depth of field of object clear pictures not consider object brightness in described wide short range zone, and

Start described lighting device, with brightness illuminated objects with regulation;

With described camera lens displacement, described rouleau circle opening and the described brightness that is obtained by described lighting device are defined as, and described short range zone be whole than the short range on the distance areas greatly adjacent to described normal range zone at least.

2. according to the described omnidistance camera of claim 1, it is characterized in that described switchgear comprises the single operating parts that can select the grand pattern of described spy.

3. according to the described omnidistance camera of claim 1, it is characterized in that, when following the selected grand pattern of described spy of described normal mode, camera lens moves to the position that is applicable to the grand pattern of described spy by described lens moving apparatus from the position that is applicable to normal mode, described volume circle opening reduce with camera lens mobile basically and with normal mode in to regulate the function of object brightness irrelevant, and the function of described lighting device additional object brightness when taking pictures and in the normal mode irrespectively is driven.

4. according to the described omnidistance camera of claim 1, it is characterized in that described aperture stopping device comprises a little fixed orifice that is formed on the removable plate, removable plate is independent of the volume circle shedding motion of normal mode.

5. according to the described omnidistance camera of claim 1, it is characterized in that, described switchgear also is suitable for the supermacro large model of selected more short range zone usefulness, described camera lens displacement is set respectively with described rouleau circle opening grand pattern of relative described spy and supermacro large model, and described switchgear comprises a single operation spare that allows to select described supermacro large model.

6. wide range focusing camera comprises:

The camera lens of mobile cameras with selected one can clear photographed the lens moving apparatus of distance range,

Change the volume circle opening modifier of camera volume circle opening,

The lighting device of contrast phase object illumination, and

Select the selector switch of normal manipulation mode and special grand operator scheme;

Described normal manipulation mode is defined as scenery location in the normal relatively distance range of described camera lens, and described volume circle opening is chosen to be normal photographing,

The grand operator scheme of described spy is defined as described camera lens relatively adjacent to scenery location in the short range of normal distance range, and described lighting device starts, and described volume circle opening reduces so that suitable mutually with the startup of the lighting device of described short range.

7. according to the described wide range focusing camera of claim 6, it is characterized in that described selector switch comprises single of allow selecting in normal manipulation mode and the special grand operator scheme any.

8. according to the described wide range focusing camera of claim 6, it is characterized in that the described volume circle opening that is used for the grand operator scheme of described spy is scheduled to.

9. according to the described wide range focusing camera of claim 6, it is characterized in that described normal distance range and described short range are overlapped.

10. according to the described wide range focusing camera of claim 6, it is characterized in that, described volume circle opening modifier comprise a plurality of when described normal manipulation mode with the aperture control blade that limits continuously adjustable volume circle opening and one in the grand operator scheme of described spy to limit a fixing and aperture board of less volume circle opening basically.

11. according to the described wide range focusing camera of claim 6, it is characterized in that, described volume circle opening modifier comprises an aperture board, is used to limit at least two the fixing volume circle openings that can select described normal manipulation mode and special grand operator scheme respectively.

12. according to the described wide range focusing camera of claim 6, it is characterized in that, selector switch also allows to select the big operator scheme of supermacro, this mode is defined as adjacent with the grand distance range of the described spy relatively nearer distance range location of camera lens, start described lighting device, and described volume circle opening reduces so that suitable mutually with the driving at the lighting device at described more short range place.

13., it is characterized in that the described volume circle opening that is used for the big operator scheme of described supermacro is scheduled to according to the described wide range focusing camera of claim 12, and described short range and described more short range are overlapped.

14. a wide range focusing camera comprises:

Camera lens is selected to move to the focusing that is suitable for respectively than two diverse locations of wide-long shot and closer distance shooting,

Be used to limit the volume circle opening selection mechanism of at least two different volume circles open areas,

Be used to drive focusing camera lens being moved to the control piece of one of two positions being limited, and

Be positioned at the engage part on the movable part of focusing and the selection mechanism of volume circle opening, camera lens is moved to be suitable for and roll up the selection mechanism of circle opening when short range is found a view the position and move to select to roll up and enclose less one in open area when driving focusing.

15., it is characterized in that according to the described wide range focusing camera of claim 14, further comprise the switch that starts lighting device, lighting device is suitable for being suitable for starting when short range is found a view the position so that camera lens is moved in the focusing action.

16. according to the described wide range focusing camera of claim 14, it is characterized in that, further comprise a lost motion mechanism, allow to be positioned at volume circle opening selection mechanism when being suitable for the remote viewfinding position and select or not to roll up circle open area part and select to roll up less one in circle open area intrusively at camera lens.

17., it is characterized in that the selection mechanism of volume circle opening comprises a plurality of aperture control blades according to the described wide range focusing camera of claim 14.

18. according to the described wide range focusing camera of claim 17, it is characterized in that, the selection mechanism of volume circle opening also comprise one its go up and form an aperture openings and be suitable for mobile selectively so that aperture openings is positioned at the removable plate on the camera lens optical axis line.

19. according to the described wide range focusing camera of claim 14, it is characterized in that, the selection mechanism of volume circle opening comprise one its go up and form a plurality of aperture openings and be suitable for mobile selectively so that one of aperture openings is positioned at the removable plate on the camera lens optical axis line.

20., it is characterized in that control piece is suitable for manual drives according to the described wide range focusing camera of claim 14.

21., it is characterized in that control piece is suitable for motor-driven according to the described wide range focusing camera of claim 14.

22., also comprise a autofocus mechanism according to the range sensor signal drive motor according to the described wide range focusing camera of claim 21.

23. a wide range focusing camera comprises:

Camera lens selected to move to be suitable for respectively finding a view more at a distance and the focusing of two diverse locations that closer distance is found a view,

Be used to limit the volume circle opening selection mechanism of at least two different volume circles open areas,

Drive the 1st motor of focusing,

Drive the 2nd motor of volume circle opening selection mechanism, and

A circuit is used to make the 2nd motor to match with the 1st motor, thereby the selection mechanism of volume circle opening can move to less one that selects volume circle open area when being suitable for finding a view the position than short range at camera lens.

24., also comprise an autofocus mechanism that drives the 1st motor according to range sensor according to the described wide range focusing camera of claim 23.

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