CN205899215U - Photographic lighting system - Google Patents

Abstract

The application discloses photographic lighting system is including at least one LED lamp pearl, lamp stand and power, the bottom surface at the lamp stand is fixed to LED lamp pearl, the lamp stand is the annular, the power is each LED lamp pearl power supply. The application provides a photographic lighting system has reached current xenon flash lamp and the LED flash light optimum effect among both in the aspect of luminous flux, colour temperature, flash duration, group flashing light etc to be applicable to the subject of this kind high reflectance of the jade class work of art, out -of -shape, high color rendition degree.

Description

A kind of photographic lighting system

Technical field

The application is related to a kind of photographic lighting system, more particularly to a kind of high reflectance, high color reproduction is required Object is photographed be suitable for illuminator.

Background technology

Flash lamp (flash) is a kind of artificial light sources being used in photography, including xenon flash lamp (xenon Flashtube), led flash lamp etc..

Xenon flash lamp is one kind of arc lamp (electric arc lamp), is made up of the sealed glass tube of certain length, Wherein it is filled with xenon.Two ends in glass tubing respectively set an electrode, when high-tension current is instantaneously applied to two electrodes, by high pressure Xenon is ionized by pulse, and this just produces extremely strong light in very short time.

Luminous flux (luminous flux) is used to characterize an index of the perception power of light, and unit is lumen.Xenon dodges The luminous flux of light lamp up to 80,000 lumens more than, instantaneous light flux up to 150,000 lumens more than.And by its operation principle institute Limit, luminous flux can not reduce.

Colour temperature (color temperature) is used to characterize an index of light source color.The average color temperature of daylight is 5500k, the suitable flash lamp adopting close to daylight colour temperature of photography.The colour temperature of xenon flash lamp, can shadow between 8000k～12000k Ring color in photo for the subject, that is, color rendition is poor.

The flash duration (flash duration) of xenon flash lamp is generally between 1/250 second～1/25 second, permissible Shorter, but can not be longer.This is because the operation principle of xenon flash lamp is using high pressure produced by two electrode instantaneous discharges Pulse, to ionize xenon, is discharged and is unable to last longer.Some shoot occasion needs the exposure of 1 second, 1 minute or even several minutes Time, xenon flash lamp just cannot be suitable for.

Xenon flash lamp is typically with the form that electric capacity sparks to apply high-tension current for electrode, and electric capacity is then by outside Power supply is charged.Because its operation principle is limited, electric capacity needs the charging interval of several seconds after discharging every time, just can carry out next Secondary electric discharge.Will appear as xenon flash lamp when using and open once having to wait for the several seconds afterwards and just can continuing on.Some shoot field Conjunction is continuously shot in needing the short time, and xenon flash lamp just cannot be suitable for.

In the portable electric appts such as mobile phone, panel computer, led flash lamp is widely applied.With xenon flash lamp Compare, the luminous flux of led flash lamp is very low, generally only 2000～3000 lumens.The colour temperature of led flash lamp 3500k～ Between 5500k, than xenon flash lamp closer to daylight colour temperature.By the led lamp beads of different colours of arranging in pairs or groups, (lamp bead just refers to light Diode) carry out colour mixture, the reference color temperature of led flash lamp can also be extended.But the nominal colour temperature of led flash lamp and actual measurement color Often deviation is larger for temperature.In flash duration, led flash lamp can meet various demands, also there is not the charging interval Limit.

The common flash lamp of contrast both the above understands, xenon flash lamp has advantage on luminous flux, but in colour temperature, flash of light On persistent period, group flashing light, there is inferior position.Led flash lamp has advantage on colour temperature, flash duration, group flashing light, But inferior position is had on luminous flux.How with reference to the advantage of two kinds of flash lamies, evade respective inferior position simultaneously, just become photography One research direction of lighting field.

When reference object is the jade class art work, there are some particular/special requirements to photo illumination.First, jade material is usual There is high reflectance it is easy to see catoptric imaging on jade for the flash lamp in photo.Secondly, the shape of the jade class art work Shape is irregular, typically more mellow and full, has some positions to be often difficult to illuminate and leave shade.Again, the color of jade is a lot, shines Piece allows for truly reflecting the color of jade, once color has deviation, can lead to the erroneous judgement to jade material.Due to clapping Take the photograph the particularity of object it is adaptable to the illuminator of jade class art work photography allows for sending more uniform, milder light, To avoid the catoptric imaging of flash lamp is seen on jade；The jade class art work to be illuminated from multiple angles simultaneously, individual to avoid Shade is left at other position；The colour temperature simultaneously also requiring light can stably simulate daylight, so that photo has higher color Reduction degree.

Having now some technical literatures provides solution to the sheen of photo illumination light fixture and radiating.

The Chinese utility model patent that Authorization Notice No. is cn202521434u, authorized announcement date is on November 7th, 2012 Disclose a kind of photo illumination light fixture.The light that LED lamp core sends is reflected using reflector and is converged by this lighting, Again through sheen screening glass formed uniformly, the illuminating ray of free from glare.This lighting also adopts fan to high-power LED wick Carry out wind-cooling heat dissipating.

The Chinese invention patent application that application publication number is cn103345106a, Shen Qing Publication day is on October 9th, 2013 Disclose a kind of oled illuminating lamp.The document is recorded in the background parts of description: existing led illuminating lamp generally requires additional Improving the uniformity of illumination and soft degree, high-power LED light source is big therefore due to caloric value for even light shield, the base part of soft light cover Need special radiator.

The Chinese invention patent application that application publication number is cn105202378a, Shen Qing Publication day is on December 30th, 2015 Disclose a kind of led camera lighting device.This illuminator is first adhesively secured on radiator using high-power LED lamp bead, then Radiator is fixed on aluminum alloy casing, thus solving the heat dissipation problem of high-power LED lamp bead.

Above-mentioned technical literature can not be fully solved the specific question shooting for the jade class art work, therefore there is a need to There is provided a kind of applicable photographic lighting system to high reflectance, reference object in irregular shape, high color reproduction degree.

Content of the invention

Technical problems to be solved in this application are to provide a kind of photographic lighting system, can have existing xenon simultaneously and dodge The advantage of light lamp and led flash lamp is additionally it is possible to be applied to high reflectance, in irregular shape, high color reproduction degree reference object.

For solving above-mentioned technical problem, the application photographic lighting system includes at least one led lamp beads, lamp socket and power supply； Described led lamp beads are fixed on the bottom surface of lamp socket；Described lamp socket ringwise and lamp socket bottom surface towards medial surface direction tilt Raise, so that each led lamp beads on lamp socket are centroclinal luminous towards annular lamp holder；Described power supply is each led lamp beads Power supply.

Further, described led lamp beads adopt the led lamp beads of high-power, high general colour rendering index.Described high-power refer to In more than 10w, described high general colour rendering index refers to that the general colour rendering index of single led lamp beads exists to the power of single led lamp beads More than 80.

Preferably, described led lamp beads have multiple, and are centrosymmetric and are fixed on the bottom surface of annular lamp holder.

Further, the surface of described lamp socket and/or be internally provided with radiator structure；Described lamp socket generally metal material Matter, or the position of at least fixing led lamp beads is metal material.

For example, described radiator structure is the soaking plate arranging metal material in lamp socket bottom surface, and its area is more than led lamp beads Area；Led lamp beads are fixed in soaking plate, and soaking plate is fixed on lamp socket bottom surface.

For example, described radiator structure is the radiating fin arranging metal material in lamp socket top surface.

For example, described radiator structure be inside lamp socket setting flow channel for liquids, and holder surface setting flow channel entry point and Runner exit, flowing in runner has aqueous cooling liquid.

Further, described radiator structure also includes fan, to radiating fin or be by convection into the aqueous cooling liquid outside lamp socket Blowing.

Further, translucent softbox is arranged on the light emission direction of led lamp beads.

Further, the voltage of described power supply is adjustable, adjusts voltage and is used for adjusting luminous flux and the color of single led lamp beads Temperature.

Further, described photographic lighting system also includes volume sensing unit and microprocessor；Described volume sensing is single Unit is used for measuring the volume of reference object；Described microprocessor is used for adjusting single led lamp beads according to the volume of reference object Whether power and voltage.

The technique effect that the application obtains there is provided a kind of photographic lighting system, when luminous flux, colour temperature, flash of light continue Between, the aspect such as group flashing light reached optimal effectiveness in existing xenon flash lamp and led flash lamp, and has been applied to jade This high reflectance of the stone class art work, in irregular shape, high color reproduction degree reference object.

Brief description

Fig. 1 is the overall structure diagram of the embodiment one of the application photographic lighting system.

Fig. 2 is the upward view of the lamp socket in Fig. 1.

Fig. 3 be in Fig. 2 a-a to sectional view.

Fig. 4 is the overall structure diagram of the embodiment two of the application photographic lighting system.

In figure description of reference numerals: 1 is led lamp beads；2 is lamp socket；2a is lamp socket top surface；2b is lamp socket bottom surface；2c is lamp Seat lateral surface；2d is lamp socket medial surface；3 is power supply；4 is volume sensing unit.

Specific embodiment

Refer to Fig. 1, this is the embodiment one of the application photographic lighting system.Described photographic lighting system includes at least one Individual led lamp beads 1, lamp socket 2 and power supply 3.Described led lamp beads 1 are fixed on the bottom surface 2d of lamp socket 2.Described power supply 3 is used for as each Led lamp beads 1 provide the adjustable electric energy of voltage, and power for radiator structure that may be present.

Preferably, described led lamp beads 1 adopt high-power LED lamp bead.The power of its single lamp bead is for example in 10w～200w Between, the temperature such as highest of its single lamp bead allows 50 DEG C, and the general colour rendering index (ra) of its single lamp bead for example requires More than 80.The led lamp beads meeting above-mentioned requirements can customize acquirement although high cost, but high-power can obtain big light Flux, low heating can reduce the requirement to radiator structure, and higher general colour rendering index can obtain high color reproduction degree.Pass System led lamp beads luminous flux generally in 2000～3000 lumens, single lamp of the high-power LED lamp bead that the application preferably employs Pearly-lustre flux up to 10,000 lumens more than.Because the voltage of power supply 3 is adjustable, also can be by turning voltage down so that the light of single lamp bead Flux reduces.Preferably, the colour temperature of described led lamp beads 1 is between 3000k～10000k, and colour temperature shows accurately.Due to electricity The voltage in source 3 is adjustable, also can adjust colour temperature within the specific limits by adjusting voltage.

Preferably, the highlight flux according to needed for whole photographic lighting system, selects one or more led lamp beads.Example As if the highlight flux of single lamp bead is 10,000 lumens, the highlight flux that whole photographic lighting system hope obtains is 15 Ten thousand lumens are such that it is able to the xenon flash lamp that matches in excellence or beauty, then can be fixed on lamp socket with being centrosymmetric from 15 lamp bead.

Refer to Fig. 2, this is the upward view of lamp socket 2 in Fig. 1, described lamp socket 2 is ringwise.When there being many led lamp beads 1, excellent Choosing is centrosymmetric and is fixed on the bottom surface 2d of annular lamp holder 2.If there is many led lamp beads 1, different colours of can arranging in pairs or groups Led lamp beads 1 carry out colour mixture, and every led lamp beads 1 can also individually be turned on and off.

Described lamp socket 2 not only provides the base of fixing led lamp beads 1, also on surface and/or be internally provided with radiator structure. This is because the caloric value of high-power LED lamp bead is larger, raises with temperature, and the luminous flux that lamp bead lights and colour temperature all can occur Change, if temperature is too high also can burn out lamp bead.Therefore must be using some heat dissipation so that the temperature of lamp bead be maintained at conjunction In the range of reason.For ease of radiating, annular lamp holder 2 is overall can be metal material, or is at least used for fixing the portion of led lamp beads 1 It is divided into metal material, described metal is preferably the good metal of the thermal diffusivity such as aluminum, copper.

For example, described radiator structure is to arrange soaking plate in the bottom surface 2b of lamp socket 2.Described soaking plate is metal material, its Area is significantly more than the area of led lamp beads 1.Led lamp beads 1 are fixed in soaking plate, and soaking plate is further secured to circular lamp The bottom surface 2b of seat 2.By arranging soaking plate so that the heat that led lamp beads 1 produce can be conducted to lamp socket with large area and rapidly 2, thus being conducive to the radiating of led lamp beads 1.

And for example, described radiator structure is to arrange radiating fin in the top surface 2a of lamp socket 2.Described radiating fin is metal material Matter, can increase the area of heat-shift between lamp socket 2 and environment, thus being conducive to the radiating of led lamp beads 1.Alternatively, dissipate Hot fin may also be arranged on bottom surface 2b, lateral surface 2c and/or the medial surface 2d of lamp socket 2.

For another example, described radiator structure is to arrange radiating fin in the top surface 2a of lamp socket 2, simultaneously peripheral hardware fan be aligned heat radiating fin Piece is dried, and increases the heat exchange efficiency between radiating fin and environment further.

Also such as, described radiator structure is to arrange flow channel for liquids in the inside of lamp socket 2, and arranges runner on the surface of lamp socket 2 Entrance and runner exit, peripheral hardware water pump simultaneously alternatively arranges fan.Described flow channel for liquids is pressed close to lamp socket 2 and is used for fixing led lamp beads 1 Part, in runner flowing have aqueous cooling liquid, for taking away the heat of led lamp beads 1.Aqueous cooling liquid is in lamp socket 2 and environment Between heat-shift, and can by fan be by convection into outside lamp socket 2 aqueous cooling liquid blowing.

Any of the above radiator structure or be to increase heat exchange efficiency between led lamp beads 1 and lamp socket 2, or it is to increase lamp Heat exchange efficiency between seat 2 and environment, the means of employing include soaking plate, radiating fin, air-cooled, water-cooled etc., thus being employing High-power LED lamp bead provides good and stable radiating condition.

Refer to Fig. 3, this be in Fig. 2 a-a to sectional view.The top surface of traditional lamp socket is typically parallel with bottom surface, this The bottom surface 2b of the annular lamp holder 2 of application raises towards the direction of medial surface 2d, so that each led lamp beads 1 on annular lamp holder 2 It is not to light vertically downward, and the centroclinal certain angle being towards annular lamp holder 2 lights.Why annular lamp holder 2 is adopted With the loop configuration of hollow it is simply that in order to photographic attachment is placed on hollow part.And the bottom surface of annular lamp holder 2 has a constant inclination Angle, can make each led lamp beads 1 be directed at photography target from top to bottom, ecto-entad and light.This design is used to avoid taking the photograph Shade in the individual sites of shadow object, and reach the effect similar to shadowless lamp to a certain extent, are therefore particularly suitable for The in irregular shape and mellow and full jade class art work is photographed.

In order to form soft uniform light, softbox is set preferably on the light emission direction of led lamp beads 1.For example, described Softbox and lamp socket 2 have the annular being substantially the same, such that it is able to be assemblied in bottom surface 2b, lateral surface 2c and/or the inner side of lamp socket 2 Face 2d.Softbox forms an annular tubular housing with lamp socket 2, and each led lamp beads 1 is just arranged in this cavity.Softbox For example be translucent, similar to clouded glass, thus the light that led lamp beads 1 are sent carry out softening and equably be radiated at photography right As upper.

Described power supply 3 is powered for each led lamp beads 1 first, and can adjust led lamp beads 1 by adjusting voltage Luminous flux and colour temperature.If the radiator structure in lamp socket 2 is also required to electricity consumption, such as fan, water pump etc., power supply 3 is also scattered simultaneously Heat structure is powered.Obviously, by control power supply 3 be led lamp beads 1 power-on time it is possible to control led lamp beads 1 flash of light when Between between 0.01 second to several minutes.

The embodiment one of the photographic lighting system according to Fig. 1 to Fig. 3 has the advantage that.

First, due to employing led lamp beads high-power, low in calories, thus the existing xenon that can match in excellence or beauty on luminous flux Flash lamp, better than existing led flash lamp.For the big problem of the caloric value brought using high-power LED lamp bead, the application Provide simultaneously multiple heat dissipation technologys available it is sufficient to guarantee the temperature of high-power LED lamp bead in the reasonable scope.

Second, due to employing high general colour rendering index, the accurate led lamp beads of colour temperature, thus it is better than existing in colour temperature Xenon flash lamp and led flash lamp.The photographic lighting system of the application therefore can simulate daylight exactly, captured photo On color with authentic item closely, it is particularly suitable for shooting the bat that jade class art work etc. has high demands to color reduction degree Take the photograph object.

Third, due to employing the adjustable power supply of voltage, such that it is able to adjust luminous flux and the color of led lamp beads further Temperature, to be applied to different reference objects.

Fourth, devising a kind of bottom surface to tilt, to medial surface, the annular lamp holder raised, such that it is able to formed from top to bottom and Oblique light ray from outside to inside, is radiated on reference object and will not form shade, is particularly suitable for shooting jade class art work etc. Reference object in irregular shape.

Fifth, devising a kind of softbox matching with base, the light that led lamp beads send can be carried out sheen and all It is irradiated to after even on reference object, completely eliminate the catoptric imaging that flash lamp is likely to form on reference object, be particularly suitable for In the reference object shooting the high reflectances such as the jade class art work.

Refer to Fig. 4, this is the embodiment two of the application photographic lighting system.Compared with embodiment one, embodiment two exists The bottom surface 2d of lamp socket 2 increased volume sensing unit 4 and a microprocessor (not shown).Described volume sensing unit 4 is used for Substantially measure the volume of reference object.For example, described volume sensing unit 4 is range sensor, can be that laser ranging passes Sensor, infrared distance sensor, ultrasonic distance-measuring sensor etc..Detect the distance with reference object by range sensor, Thus substantially measuring the volume of reference object.And for example, described volume sensing unit 4 is optical pickocff or photography and vedio recording Device, by catching the image of reference object, then is sent to microprocessor and is processed for substantially measuring the body of reference object Long-pending.Once substantially measuring the volume of reference object, microprocessor just automatically adjusts single LED lamp according to the volume of reference object The power supply of pearl whether and voltage, thus controlling being turned on and off of single led lamp beads, the parameter such as luminous flux, colour temperature.Generally, The volume of reference object bigger it is desirable to luminous flux less, colour temperature is in the range of daylight.Conversely, reference object Volume less it is desirable to luminous flux bigger, colour temperature is also in the range of daylight.

Relatively above-mentioned two embodiment understands, embodiment one needs keying and luminous flux, the colour temperature of manual adjustment led lamp beads Etc. parameter, embodiment two can automatically adjust keying and the ginseng such as luminous flux, colour temperature of led lamp beads according to the approximate volume of reference object Number, thus more intelligent.

These are only the preferred embodiment of the application, be not used to limit the application.Those skilled in the art is come Say, the application can have various modifications and variations.All any modifications within spirit herein and principle, made, equivalent Replace, improve etc., should be included within the protection domain of the application.

Claims (9)

1. a kind of photographic lighting system, is characterized in that, including at least one led lamp beads, lamp socket and power supply；Described led lamp beads are solid It is scheduled on the bottom surface of lamp socket；Described lamp socket is ringwise and the bottom surface of lamp socket tilts to raise towards the direction of medial surface, so that lamp socket On each led lamp beads centroclinal luminous towards annular lamp holder；Described power supply is powered for each led lamp beads.

2. photographic lighting system according to claim 1, is characterized in that, described led lamp beads adopt high-power, high typically aobvious The led lamp beads of colour index, in more than 10w, described high general colour rendering index is the described high-power power referring to single led lamp beads The general colour rendering index referring to single led lamp beads is more than 80.

3. photographic lighting system according to claim 1 and 2, is characterized in that, described led lamp beads have multiple, and be in center Symmetrically it is fixed on the bottom surface of annular lamp holder.

4. photographic lighting system according to claim 1, is characterized in that, the surface of described lamp socket and/or be internally provided with Radiator structure；Described lamp socket generally metal material, or the position of at least fixing led lamp beads is metal material.

5. photographic lighting system according to claim 4, is characterized in that, described radiator structure is to arrange gold in lamp socket bottom surface Belong to the soaking plate of material, its area is more than the area of led lamp beads；Led lamp beads are fixed in soaking plate, and soaking plate is fixed on lamp socket Bottom surface；

Or, described radiator structure is the radiating fin arranging metal material in lamp socket top surface；

Or, described radiator structure is setting flow channel for liquids inside lamp socket, and arranges flow channel entry point and runner in holder surface Outlet, flowing in runner has aqueous cooling liquid.

6. photographic lighting system according to claim 5, is characterized in that, described radiator structure also includes fan, to radiating Fin or the aqueous cooling liquid being by convection into outside lamp socket are dried.

7. photographic lighting system according to claim 1, is characterized in that, arranges semi-transparent on the light emission direction of led lamp beads Bright softbox.

8. photographic lighting system according to claim 1, is characterized in that, the voltage of described power supply is adjustable, adjusts voltage and uses To adjust luminous flux and the colour temperature of single led lamp beads.

9. photographic lighting system according to claim 1, is characterized in that, described photographic lighting system also includes volume sensing Unit and microprocessor；Described volume sensing unit is used for measuring the volume of reference object；Described microprocessor is used for according to bat Whether and voltage the volume taking the photograph object adjusts the power supply of single led lamp beads.