[go: up one dir, main page]

US20050030416A1 - Image capturing device - Google Patents

Image capturing device Download PDF

Info

Publication number
US20050030416A1
US20050030416A1 US10/909,409 US90940904A US2005030416A1 US 20050030416 A1 US20050030416 A1 US 20050030416A1 US 90940904 A US90940904 A US 90940904A US 2005030416 A1 US2005030416 A1 US 2005030416A1
Authority
US
United States
Prior art keywords
image capturing
light
light emitting
capturing device
emitting diodes
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US10/909,409
Other languages
English (en)
Inventor
Eiji Kametani
Yoshihiko Yamamoto
Hiroshi Chikugawa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sharp Corp
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Assigned to SHARP KABUSHIKI KAISHA reassignment SHARP KABUSHIKI KAISHA ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: CHIKUGAWA, HIROSHI, KAMETANI, EIJI, YAMAMOTO, YOSHIHIKO
Publication of US20050030416A1 publication Critical patent/US20050030416A1/en
Priority to US12/496,755 priority Critical patent/US8687109B2/en
Abandoned legal-status Critical Current

Links

Images

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—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
    • G03B15/00—Special procedures for taking photographs; Apparatus therefor
    • G03B15/02—Illuminating scene
    • G03B15/03—Combinations of cameras with lighting apparatus; Flash units
    • G03B15/05—Combinations of cameras with electronic flash apparatus; Electronic flash units
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/56—Cameras or camera modules comprising electronic image sensors; Control thereof provided with illuminating means
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/70—Circuitry for compensating brightness variation in the scene
    • H04N23/74—Circuitry for compensating brightness variation in the scene by influencing the scene brightness using illuminating means
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—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
    • G03B2215/00—Special procedures for taking photographs; Apparatus therefor
    • G03B2215/05—Combinations of cameras with electronic flash units
    • G03B2215/0503—Built-in units
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—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
    • G03B2215/00—Special procedures for taking photographs; Apparatus therefor
    • G03B2215/05—Combinations of cameras with electronic flash units
    • G03B2215/0564—Combinations of cameras with electronic flash units characterised by the type of light source
    • G03B2215/0567—Solid-state light source, e.g. LED, laser
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
    • H01L2224/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
    • H01L2224/42—Wire connectors; Manufacturing methods related thereto
    • H01L2224/47—Structure, shape, material or disposition of the wire connectors after the connecting process
    • H01L2224/48—Structure, shape, material or disposition of the wire connectors after the connecting process of an individual wire connector
    • H01L2224/4805—Shape
    • H01L2224/4809—Loop shape
    • H01L2224/48091—Arched
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
    • H01L2224/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
    • H01L2224/42—Wire connectors; Manufacturing methods related thereto
    • H01L2224/47—Structure, shape, material or disposition of the wire connectors after the connecting process
    • H01L2224/48—Structure, shape, material or disposition of the wire connectors after the connecting process of an individual wire connector
    • H01L2224/481—Disposition
    • H01L2224/48151—Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive
    • H01L2224/48221—Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked
    • H01L2224/48245—Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked the item being metallic
    • H01L2224/48247—Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked the item being metallic connecting the wire to a bond pad of the item
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
    • H01L2224/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
    • H01L2224/42—Wire connectors; Manufacturing methods related thereto
    • H01L2224/47—Structure, shape, material or disposition of the wire connectors after the connecting process
    • H01L2224/48—Structure, shape, material or disposition of the wire connectors after the connecting process of an individual wire connector
    • H01L2224/484—Connecting portions
    • H01L2224/48463—Connecting portions the connecting portion on the bonding area of the semiconductor or solid-state body being a ball bond
    • H01L2224/48465—Connecting portions the connecting portion on the bonding area of the semiconductor or solid-state body being a ball bond the other connecting portion not on the bonding area being a wedge bond, i.e. ball-to-wedge, regular stitch
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N2101/00—Still video cameras

Definitions

  • the present invention relates to such image capturing devices as movie-type equipment, CCD cameras, CMOS imagers, and silver halide cameras employing LED device(s) as illumination source(s); and in particular, relates to image capturing devices permitting increased effective luminance of illumination source(s) employing LED device(s).
  • R, G, and B light emitting diodes As compared with xenon discharge tubes and the like, use of R, G, and B LEDs is advantageous because adjustment of light source color temperature is facilitated, less time is required for power supply charging and discharging, and so forth.
  • FIG. 8 is a graph (Id-Po characteristics) showing the relationship between LED drive current Id and luminance (optical output Po) in the conventional art.
  • LED luminance (optical output Po) is roughly proportional to electric current (drive current Id) when the amount of current flowing through the LED is small.
  • drive current Id is large, ⁇ decreases due to generation of heat by the LED element, and optical output Po saturates at maximum value Po 1 as indicated by the curve shown in FIG. 8 . That is, no matter how large LED drive current is made, LED luminance does not exceed some fixed limit; and it is consequently impossible to obtain luminance as necessary for flash use.
  • power consumption Pd should also increase by a factor of 2.5, going from between 40 mW and 78 mW to between 100 mW and 195 mW. And yet, power consumption Pd actually increases by more than a factor of 2.5.
  • the present invention was conceived in light of such problems in the conventional art, it being an object thereof, where LED(s) is/are used as flash apparatus(es), to provide an image capturing device permitting increased effective luminance of camera flash(es) employing LED(s). It is moreover an object to provide an image capturing device that will simultaneously permit increased flash effective luminance as well as increased life of LED(s) employed and so forth.
  • an image capturing device in accordance with one or more embodiments of the present invention may comprise a plurality of light emitting diodes used as one or more illumination sources and respectively emitting light of different colors; wherein the plurality of light emitting diodes are respectively made to emit light in pulsed fashion in turn by emitted color during one or more exposure times.
  • the plurality of light emitting diodes emitting light of different colors combination(s) of light emitting diodes emitting red, green, and blue (the colors referred to as “the three primary colors”) may, for example, be cited. Use of the three primary colors will make it possible to faithfully reproduce the color balance of the photographic subject.
  • exposure time(s) may correspond to time(s) during which such shutter(s) is/are open (as determined by shutter speed(s)).
  • timing with which light emitting diode(s) is/are made to emit light may be such that timing(s) of each emitted color is/are completely different from that or those of the other(s), the timing with which any two colors, for example, are emitted may partially or completely overlap.
  • image capturing device(s) in accordance with embodiment(s) of the present invention because plurality of light emitting diodes used as illumination source(s) are not driven continuously throughout entire exposure time(s) but are driven in pulsed fashion in turn by emitted color, it is possible to suppress generation of heat by light emitting diode element(s) and reduce adverse effect(s) on luminous efficiency, making it possible to achieve higher light emitting diode drive current value(s) at which optical output saturates than would be the case had light emitting diode(s) been driven continuously.
  • the plurality of light emitting diodes may be made to sequentially emit light in pulsed fashion in turn by emitted color during at least one of the exposure time or times. Moreover, the plurality of light emitting diodes may be made to sequentially emit light in pulsed fashion in turn by emitted color over multiple iterations during at least one of the exposure time or times.
  • plurality of light emitting diodes used as illumination source(s) may be sequentially driven in pulsed fashion in turn by emitted color. It is possible to suppress generation of heat by light emitting diode element(s) itself or themselves and to suppress effect(s) of generation of heat exerted between or among light emitting diode elements of different emitted colors, making it possible to achieve higher light emitting diode drive current value(s) at which optical output saturates than would be the case had light emitting diode(s) been driven continuously.
  • one or more image capturing elements in the image capturing device may be electronic; in correspondence to at least one timing with which the plurality of light emitting diodes are made to emit light in turn by emitted color, one or more monochromatic images corresponding to at least one of the emitted color or colors may be respectively acquired by at least a portion of the image capturing element or elements; and one or more color images may be formed by combining at least a portion of the respective acquired monochromatic image or images.
  • image capturing device(s) in accordance with such embodiment(s) of the present invention, because it is possible to do without filter(s) at individual element(s), all image capturing elements may be utilized in acquiring monochromatic image(s). This being the case, where the same image capturing element(s) is/are used it will be possible to obtain color image(s) having three times the resolution, or if color image(s) of the same resolution is/are to be obtained it will be sufficient to use one-third the number of image capturing elements.
  • At least one luminous intensity and at least one total illumination time for each of the plurality of light emitting diodes during at least one of the exposure time or times may respectively be made variable.
  • at least one luminous intensity and at least one total illumination time for each of the plurality of light emitting diodes during at least one of the exposure time or times may be varied, altering at least one ratio between or among luminous intensity time integrals of at least a portion of the respective colors.
  • at least one luminous intensity and at least one total illumination time for each of the plurality of light emitting diodes during at least one of the exposure time or times may be varied by at least one substantially identical ratio.
  • image capturing device(s) in accordance with such embodiment(s) of the present invention, where it is possible to vary luminous intensity or intensities and total illumination time(s) for plurality of light emitting diodes used as illumination source(s), altering ratio(s) between or among luminous intensity time integrals of respective colors, it will be possible to adjust illumination source color balance(s). Furthermore, by varying luminous intensity or intensities and total illumination time(s) for respective color(s) by substantially identical ratio(s), it will be possible to adjust total exposure dose(s) produced by illumination source(s) while maintaining illumination source color balance(s).
  • image capturing device(s) in accordance with embodiment(s) of the present invention may further comprise one or more luminous energy detection means for detecting light incident thereon after passing through one or more photographic lenses of the image capturing device; at least one of the illumination source or sources may be made to emit light prior to at least one of the exposure or exposures; and one or more exposure conditions may be set based on at least one result of detection carried out by at least one of the luminous energy detection means at at least one time when at least one of the illumination source or sources is made to emit light prior to at least one of the exposure or exposures.
  • the exposure condition or conditions set based on at least one result of detection carried out by at least one of the luminous energy detection means may include at least one shutter speed.
  • effect(s) of illumination by illumination source(s) may be accurately detected prior to exposure(s), and exposure condition(s) (e.g., exposure time(s) as determined by shutter speed(s) and/or the like) may be appropriately set based on result(s) of such detection.
  • exposure condition(s) e.g., exposure time(s) as determined by shutter speed(s) and/or the like
  • exposure time during flash photography determined conventionally based on flash intensity or the like, to be accurately determined by means of exposure control apparatus(es) internal to image capturing device(s) in similar manner as was the case with ordinary photography.
  • At least one illuminative locus of at least one of the illumination source or sources may be varied in correspondence to at least one photographic field angle of the image capturing device.
  • at least one of the illumination source or sources may have a plurality of light emitting diodes respectively irradiating light in different directions.
  • variable-magnification optical system(s) is/are arranged in front of illumination source(s), magnification-varying operation(s) of such variable-magnification optical system(s) being linked to change(s) in photographic field angle(s) of image capturing device(s), may for example be cited.
  • plurality of light emitting diodes may be arranged such that directions in which light is irradiated thereby are different, such light emitting diodes being selectively made to emit light in linked fashion with change(s) in photographic field angle(s) such that only light emitting diode(s) corresponding to location(s) within photographic field angle(s) is/are made to emit light.
  • Image capturing device(s) in accordance with such embodiment(s) of the present invention make it possible to achieve appropriate illumination in correspondence to change(s) in photographic field angle(s) of image capturing device(s).
  • Causing plurality of light emitting diodes to be selectively made to emit light in linked fashion with change(s) in photographic field angle(s) such that only light emitting diode(s) corresponding to location(s) within photographic field angle(s) is/are made to emit light makes it possible to eliminate waste and so forth associated with illumination of location(s) outside photographic field angle(s) by light emitting diode(s).
  • FIG. 1 is a drawing showing the external appearance of a camera associated with a first embodiment of the image capturing device of the present invention.
  • FIG. 2 ( a ) is a top view showing constitution of LED devices for flash use in a camera associated with a first embodiment of the image capturing device of the present invention
  • FIG. 2 ( b ) is a view of section II-II indicated in FIG. 2 ( a ).
  • FIG. 3 is a graph (Id-Po characteristics) showing the manner in which the relationship between LED drive current Id and optical output Po might change with changing LED drive pulsewidth and so forth.
  • FIG. 4 is a graph showing change in optical output Po over time when LED element drive current is held constant.
  • FIG. 5 ( a ) indicates when a shutter might be open and when it might be closed in an example of a drive signal timing chart for LEDs for flash use in a camera associated with a first embodiment of the image capturing device of the present invention
  • FIG. 5 ( b ) shows the corresponding LED drive signals.
  • FIG. 6 ( a ) indicates when a shutter might be open and when it might be closed in another example of a drive signal timing chart for LEDs for flash use in a camera associated with a first embodiment of the image capturing device of the present invention; and FIG. 6 (b) shows the corresponding LED drive signals.
  • FIG. 7 ( a ) indicates when a shutter might be open and when it might be closed in an example of a drive signal timing chart for LEDs for flash use in a camera associated with a second embodiment of the image capturing device of the present invention
  • FIG. 7 ( b ) shows the corresponding LED drive signals.
  • FIG. 8 is a graph (Id-Po characteristics) showing the relationship between LED drive current Id and luminance (optical output Po) in the conventional art.
  • FIG. 9 is a graph showing spectral sensitivity characteristics of conventional CCDs.
  • FIG. 10 is a graph showing spectral sensitivity characteristics of a conventional CMOS.
  • FIG. 1 is a drawing showing the external appearance of a camera associated with a first embodiment of the image capturing device of the present invention. Note that this camera is assumed to use silver halide film.
  • photographic lens 130 equipped with multibarrel lens barrel is arranged toward the bottom in roughly the central region of the front of body 101 of squat box-shaped camera 100 .
  • This photographic lens 130 can be extended and/or retracted as a result of actuation by actuating member(s), not shown; extension and/or retraction of photographic lens 130 permitting change in photographic magnification.
  • Three LED devices 120 for flash use are arranged at protruding region 102 formed in the upper right region at the front of camera body 101 . These LED devices 120 for flash use are arranged so as to permit light to respectively be irradiated centrally within the field angle of photographic lens 130 as well as to the left and right thereof.
  • shutter button 110 Arranged near the left edge of the top of camera body 101 is shutter button 110 , actuation of this shutter button 110 causing photograph(s) to be taken by camera 100 .
  • variable-magnification optical system(s) may be arranged in front of flash LED device(s) 120 , and magnification-varying operation(s) of such variable-magnification optical system(s) may be linked to change(s) in photographic field angle(s) accompanying extension and/or retraction of photographic lens 130 so as to alter illuminative locus or loci of flash LED device(s) 120 .
  • constitutions such as that in which diffuser plate(s) is/are provided in front of flash LED device(s) 120 may be adopted.
  • FIG. 2 ( a ) is a top view showing constitution of LED devices for flash use in a camera associated with a first embodiment of the image capturing device of the present invention
  • FIG. 2 ( b ) is a view of section II-II indicated in FIG. 2 ( a ).
  • red LED element 8 As shown at FIG. 2 ( a ), at flash LED device 120 , red LED element 8 , blue LED element 9 , and green LED element 10 are housed within a single package 20 which is box-like in shape and has cross-section in the shape of a square with rounded corners.
  • Lead frames 1 , 2 , 3 and lead frames 4 , 5 , 6 are arranged in mutual opposition at the lower portion of package 20 . These lead frames 1 through 6 are made to form an integral structure as a result of conventional insert molding with Amodel or other such white resin 11 making up the upper portion of package 20 .
  • Recess 20 a in the shape of a round, shallow bowl of diameter slightly smaller than package 20 , is formed at the top of package 20 so as to expose respective portions of lead frames 1 through 6 , and serves as location for receiving resin as well as for wire bonding.
  • sidewall 20 b of recess 20 a also serves as reflecting surface.
  • notch 20 c is formed at a top corner of package 20 above lead frame 4 , making it possible to determine the orientation of package 20 from the external appearance of package 20 .
  • Rectangular-chip-type red LED element 8 , blue LED element 9 , and green LED element 10 are respectively mounted on lead frames 3 , 5 , and 1 at respective locations thereof exposed within recess 20 a .
  • Red LED element 8 which is mounted on lead frame 3 is electrically connected by wire bonding by way of metal wire 7 a to lead frame 6 which is arranged opposite lead frame 3 and serves as the other electrode paired therewith.
  • Blue LED element 9 which is mounted on lead frame 5 is electrically connected by wire bonding by way of metal wire 7 b to lead frame 2 which is arranged opposite lead frame 5 and serves as the other electrode paired therewith.
  • green LED element 10 which is mounted on lead frame 1 is electrically connected by wire bonding by way of metal wire 7 c to lead frame 4 which is arranged opposite lead frame 1 and serves as the other electrode paired therewith.
  • recess 20 a of package 20 is encapsulated with epoxy-type transparent resin 12 , preventing deterioration of the respective LED elements.
  • red LED element 8 , blue LED element 9 , and green LED element 10 are arranged so as to be as close to each other as possible in order to facilitate mixing of colors (improve color mixture characteristics) of the respective LED elements. That is, consideration may be made for causing distances between and/or among lead frames to be as small as possible, for arranging respective LED elements at the vertices of a roughly equilateral triangle, and/or the like.
  • lead frame area at the side on which the chip is mounted may be made as large as possible, while lead frame area at the side to which the wire is directly bonded may be made small.
  • transparent resin 12 may be made to contain filler(s) and/or void(s).
  • thickness of lead frame 5 is different at the region 5 a thereof at which blue LED element 9 is mounted than it is for other locations thereof. More specifically, whereas thickness T2 of mounting region 5 a is on the order of 0.5 mm to 0.6 mm, thickness Ti at other locations is on the order of 0.3 mm; the reason for which is as follows.
  • the lead frame is made thick, then a great deal of force will be required during cutting thereof, making formation of a gap at the region of the cut unavoidable. Where this is the case, it will only be possible during working thereof to achieve a distance between lead frames that is on the same order as the thickness thereof or possibly on the order of three-fourths of the thickness thereof. Accordingly, where distance between lead frames is to be made small in order to improve color mixture characteristics, it will not be possible to employ lead frames that are very thick. And it will also be necessary to keep the lead frame thin at locations thereof at which the LED element is not mounted so as to avoid difficulty when the lead frame is bent into shape.
  • FIG. 3 is a graph (Id-Po characteristics) showing the manner in which the relationship between LED drive current Id and optical output Po might change with changing LED drive pulsewidth and so forth.
  • curve G 31 indicating Id-Po characteristics of one LED among three LEDs (these being R, G, and B) when these are driven simultaneously in CW fashion to produce emission of white light, has maximum optical output Po 1 .
  • Curves G 32 and G 33 respectively indicating Id-Po characteristics of any one among the R, G, and B LEDs when driven with drive pulsewidth 2 msec and 0.2 msec, respectively have maximum optical outputs Po 2 and Po 3 .
  • LED drive conditions per se are identical to those at curve G 33 , but the Id-Po characteristics indicated are for when the thickness in the region of the lead frame at which the LED chip is mounted is 0.6 mm, this being greater than at other locations.
  • Curves G 31 through G 34 all indicate that optical output Po is roughly proportional to drive current Id when LED drive current Id is small, but that optical output Po begins to saturate as drive current Id grows larger.
  • output saturates at roughly the same optical output Po 1 regardless of the thickness at the frame region at which the LED chip is mounted.
  • FIG. 4 is a graph showing change in optical output Po over time when LED element drive current is held constant. Curve G 41 indicates driving in pulsed fashion, and curve G 42 indicates driving in CW fashion, total amount of luminous energy being the same in either case.
  • optical output falls off more rapidly for CW drive than for pulsed drive is thought to be due to the fact that separation of encapsulant resin occurring as result of the effect of heating accompanying emission of light by LED element(s) causes occurrence of optical losses at the interface between resin and air, and due to the fact that exposure of LED element(s) to air as a result of separation of encapsulant resin promotes deterioration of LED element(s).
  • FIG. 5 ( a ) indicates when a shutter might be open and when it might be closed in an example of a drive signal timing chart for LEDs for flash use in a camera associated with a first embodiment of the image capturing device of the present invention
  • FIG. 5 ( b ) shows the corresponding LED drive signals. Note as mentioned above that this camera is assumed to use silver halide film.
  • FIG. 5 ( a ) it will be assumed for purposes of discussion that during flash photography the time during which the camera shutter is open might conventionally be on the order of ⁇ fraction (1/100) ⁇ of a second.
  • FIG. 5 ( b ) when LED elements of respective colors R, G, and B are sequentially made to emit light with different timings but such that each is made to emit light for 2 msec, it is possible to make each LED element in its turn emit light in pulsed fashion over one iteration during the time when the shutter is open.
  • the total exposure dose imparted when R, G, and B LED elements are made to emit light as a result of being driven simultaneously in CW fashion throughout the entire exposure time during which the shutter is open (10 msec) is taken to be 1.
  • the LED elements of the respective colors are each in its turn separately made to emit light for a drive pulsewidth of 2 msec over one iteration, where maximum optical output Po is held to the same value the total exposure dose obtained as determined by the fraction of time that each LED is emitting light (2 msec/10 msec) will be only 1 ⁇ 5.
  • each LED element is made to emit light for a drive pulsewidth of 2 msec (curve G 32 in FIG. 3 )
  • a maximum optical output Po that is two or more times the value that would be obtained were driving to have been carried out in CW fashion to produce emission of light. Accordingly, a total exposure dose of up to on the order of 2 ⁇ 5 can be attained. Because the value of the time integral of electric current which is required need only be on the order of 2 ⁇ 5 that which would be required had driving been carried out in CW fashion, this is suited, for example, to use in applications such as where compensation of backlighting is carried out at bright locations.
  • LED elements of respective colors are driven with different timings, it is possible to avoid situations such as occur when respective LEDs are driven simultaneously and drive currents Id overlap, with excessive load being placed on image capturing device power supply or supplies. Or it will be possible by driving LED elements with different timings to obtain higher drive current(s) Id without placing excessive load on image capturing device power supply or supplies than would be the case were the LED elements driven simultaneously.
  • LED drive currents Id, illumination timings, and illumination times for respective colors R, G, and B are made variable.
  • LED drive currents Id for respective colors R, G, and B may be varied over range(s) within which optical output(s) Po do not saturate so as to alter ratio(s) between or among luminescent intensities of respective colors, and/or ratio(s) between or among total illumination times for respective colors may be varied while LED drive currents Id for respective colors are left unchanged. Or alteration of ratio(s) between or among total illumination times for respective colors may be combined with alteration of LED drive currents Id for respective colors. In this way, it is possible to alter ratio(s) between or among exposure doses (time integrals of luminescent intensity) for respective colors, flash color balance being determined by ratio(s) between or among exposure doses for respective colors as modified by such alteration.
  • adjustment of total exposure dose(s) produced by flash(es) may be accomplished by causing LED drive currents Id for respective colors to be altered by the same ratio, by causing total illumination times for respective colors to be altered by the same ratio, or by combination of these types of alteration. In this way, it is possible to alter total exposure dose(s) produced by flash(es) while preserving flash color balance.
  • FIG. 6 ( a ) indicates when a shutter might be open and when it might be closed in another example of a drive signal timing chart for LEDs for flash use in a camera associated with a first embodiment of the image capturing device of the present invention; and FIG. 6 (b) shows the corresponding LED drive signals.
  • the total exposure dose imparted when R, G, and B LED elements are made to emit light as a result of being driven simultaneously in CW fashion throughout the entire exposure time during which the shutter is open (10 msec) is taken to be 1.
  • the LED elements of the respective colors are each in its turn separately made to emit light with drive pulsewidth equal to 0.2 msec over 16 iterations, where maximum optical output Po is held to the same value the total exposure dose obtained as determined by the fraction of time that each LED is emitting light (16 ⁇ 0.2 msec/10 msec) will be only 0.32.
  • each LED element is made to emit light for a drive pulsewidth of 0.2 msec (curve G 33 in FIG. 3 )
  • the thickness of the frame in the region at which the LED chip is mounted is made 0.6 mm (curve G 34 in FIG.
  • the timing with which two LED elements are made to emit light may be such as to cause them to overlap. By so doing, it may be possible to further increase exposure dose imparted during the time during which exposure is taking place while the shutter is open.
  • this method will be effective, since causing the G LED chip to turn ON before the R LED chip has turned OFF will have almost no thermal effect.
  • LEDs may still be desirable to cause LEDs to emit light by driving them in pulsed fashion. This is because, as has been described with reference to FIG. 4 , pulsed drive better permits suppression of LED element deterioration, making it possible to achieve lengthened LED element life, improved reliability, and so forth.
  • the present invention is not limited thereto.
  • the image capturing device may be movie-type equipment capable of carrying out motion-picture photography; in which case, for each motion-picture frame (whether it be film or video), LED(s) used as flash apparatus(es) might be driven in pulsed fashion so as to be made to emit light during the time when the shutter is open.
  • FIG. 7 ( a ) indicates when a shutter might be open and when it might be closed in an example of a drive signal timing chart for LEDs for flash use in a camera associated with a second embodiment of the image capturing device of the present invention; and FIG. 7 ( b ) shows the corresponding LED drive signals. Note that because, except for the features mentioned below, the second embodiment is identical to the first embodiment which was described with reference to FIGS. 1 through 6 , only those aspects that are different therefrom will be described here.
  • LED element(s) Internal to this camera is/are monitoring light-receiving element(s) capable of measuring amount(s) of light impinging on image capturing element(s) after passing through photographic lens(es).
  • LED element(s) is/are used as flash apparatus(es)
  • respective R, G, and B LED elements are made to emit light in preliminary fashion at the same conditions (same pulsewidth(s), time(s) between pulses, intensity ratio(s), and so forth) as during flash photography.
  • optimum exposure time(s) is/are calculated based on signal output(s) produced as a result of such preillumination, and shutter speed(s) for flash photography is/are determined.
  • shutter speed is set so as to obtain a duration that is 16 times the time required for preillumination.
  • a full-color signal might be obtained by applying red filter(s), green filter(s), and/or the like at individual image capturing element(s), where image capturing device(s) in accordance with embodiment(s) of the present invention is/are employed it may be possible to do without filter(s) at individual image capturing element(s).
  • Monochromatic images respectively corresponding to colors emitted by LED elements may be acquired through a method in which, for example, only red signal(s) is/are integrated while R LED element(s) is/are emitting light, and only green signal(s) is/are integrated while G LED element(s) is/are emitting light.
  • all image capturing elements may be utilized in acquiring monochromatic image(s). This being the case, where the same image capturing element(s) is/are used it will be possible to obtain color image(s) having three times the resolution, or if color image(s) of the same resolution is/are to be obtained it will be sufficient to use one-third the number of image capturing elements.
  • element(s) with filter(s) is/are not employed, there may be a problem in that it may no longer be possible to carry out conventional photography, i.e., photography not accompanied by illumination produced by flash apparatus(es).
  • element(s) with filter(s) could be employed, sensitivity of red-filtered element(s) with respect to emission of R light, sensitivity of green-filtered element(s) with respect thereto, and so forth being stored in advance in memory, and by employing a method in which signals are integrated in turn by color only during flash photography, it will be possible to enjoy the advantages of ability to obtain higher resolution during flash photography while still being able to carry out conventional photography.

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Studio Devices (AREA)
  • Stroboscope Apparatuses (AREA)
  • Circuit Arrangement For Electric Light Sources In General (AREA)
  • Color Television Image Signal Generators (AREA)
  • Exposure Control For Cameras (AREA)
  • Discharge-Lamp Control Circuits And Pulse- Feed Circuits (AREA)
US10/909,409 2003-08-04 2004-08-03 Image capturing device Abandoned US20050030416A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US12/496,755 US8687109B2 (en) 2003-08-04 2009-07-02 Image capturing device having pulsed LED flash

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2003286030 2003-08-04
JP2003-286030 2003-08-04
JP2004-174230 2004-06-11
JP2004174230A JP2005073227A (ja) 2003-08-04 2004-06-11 撮像装置

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US12/496,755 Continuation US8687109B2 (en) 2003-08-04 2009-07-02 Image capturing device having pulsed LED flash

Publications (1)

Publication Number Publication Date
US20050030416A1 true US20050030416A1 (en) 2005-02-10

Family

ID=34117945

Family Applications (2)

Application Number Title Priority Date Filing Date
US10/909,409 Abandoned US20050030416A1 (en) 2003-08-04 2004-08-03 Image capturing device
US12/496,755 Expired - Lifetime US8687109B2 (en) 2003-08-04 2009-07-02 Image capturing device having pulsed LED flash

Family Applications After (1)

Application Number Title Priority Date Filing Date
US12/496,755 Expired - Lifetime US8687109B2 (en) 2003-08-04 2009-07-02 Image capturing device having pulsed LED flash

Country Status (3)

Country Link
US (2) US20050030416A1 (zh)
JP (1) JP2005073227A (zh)
CN (2) CN100523985C (zh)

Cited By (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060133061A1 (en) * 2004-11-30 2006-06-22 Fuji Photo Film Co. Ltd Image taking apparatus with flash device
WO2007119572A1 (en) * 2006-03-30 2007-10-25 Kabushiki Kaisha Toshiba Lighting device, image pickup apparatus and portable terminal unit
DE102006029438A1 (de) * 2006-06-20 2007-12-27 Arnold & Richter Cine Technik Gmbh & Co. Betriebs Kg Verfahren und Vorrichtung zur Ansteuerung von Leuchtdioden einer Beleuchtungsvorrichtung
EP1950977A1 (en) * 2007-01-25 2008-07-30 Research In Motion Limited Method and apparatus for controlling a camera module to compensate for the light level of a white led
US20080180544A1 (en) * 2007-01-25 2008-07-31 Marc Drader Method and Apparatus for Controlling a Camera Module to Compensate for the Light Level of a White LED
US20090219726A1 (en) * 2008-03-02 2009-09-03 Matt Weaver Thermal storage system using phase change materials in led lamps
EP2107419A1 (en) * 2008-04-02 2009-10-07 COEMAR S.p.A. Lighting device for use with a camera
US7603031B1 (en) * 2004-12-15 2009-10-13 Canfield Scientific, Incorporated Programmable, multi-spectral, image-capture environment
US20090263117A1 (en) * 2008-04-16 2009-10-22 Avago Technologies Ecbu Ip (Singapore) Pte. Ltd. Camera module, camera-enabled device and method for capturing a frame of image data using a faux flash of light
US20100165143A1 (en) * 2007-01-25 2010-07-01 Research In Motion Limited Method and apparatus for controlling a camera module to compensate for the color spectrum of a white led
US20100285837A1 (en) * 2009-05-07 2010-11-11 Nokia Corporation Apparatus, methods and computer readable storage mediums
US20110303946A1 (en) * 2009-02-10 2011-12-15 Lumenetix, Inc. Thermal storage system using encapsulated phase change materials in led lamps
US20120258776A1 (en) * 2009-05-01 2012-10-11 Lord John D Methods and Systems for Content Processing
US8632227B2 (en) 2008-03-02 2014-01-21 Lumenetix, Inc. Heat removal system and method for light emitting diode lighting apparatus
CN103561208A (zh) * 2013-10-12 2014-02-05 浙江大学 一种基于同步触发led和相机的主动成像方法与系统
US8783894B2 (en) 2010-02-12 2014-07-22 Lumenetix, Inc. LED lamp assembly with thermal management system
EP2814235A1 (en) * 2013-06-14 2014-12-17 Q Lifestyle Holding AB Camera device with diffuser and related method
DE102013106519A1 (de) * 2013-06-21 2014-12-24 Osram Opto Semiconductors Gmbh Anordnung zur Erzeugung von Mischlicht und Verfahren zum Betrieb einer Anordnung von Mischlicht
CN104503306A (zh) * 2014-11-26 2015-04-08 北京航空航天大学 一种多相机同步触发装置及控制方法
US9060113B2 (en) 2012-05-21 2015-06-16 Digimarc Corporation Sensor-synchronized spectrally-structured-light imaging
US9414780B2 (en) 2013-04-18 2016-08-16 Digimarc Corporation Dermoscopic data acquisition employing display illumination
US20160373628A1 (en) * 2015-06-18 2016-12-22 Canon Kabushiki Kaisha Information processing apparatus, information processing method, and storage medium
US9593982B2 (en) 2012-05-21 2017-03-14 Digimarc Corporation Sensor-synchronized spectrally-structured-light imaging
US9727941B1 (en) 2014-11-19 2017-08-08 Digimarc Corporation Optimizing optical scanners for digital watermark detection
US9749607B2 (en) 2009-07-16 2017-08-29 Digimarc Corporation Coordinated illumination and image signal capture for enhanced signal detection
US9979853B2 (en) 2013-06-07 2018-05-22 Digimarc Corporation Information coding and decoding in spectral differences
EP3389344A1 (en) * 2012-10-18 2018-10-17 Seoul Semiconductor Co., Ltd. Light emitting apparatus
US10113910B2 (en) 2014-08-26 2018-10-30 Digimarc Corporation Sensor-synchronized spectrally-structured-light imaging
US20200132277A1 (en) * 2018-10-31 2020-04-30 Microsoft Technology Licensing, Llc Tunable spectral illuminator for camera
US20200282512A1 (en) * 2019-03-04 2020-09-10 Ebara Corporation Polishing method and polishing apparatus
US10931894B2 (en) 2018-10-31 2021-02-23 Microsoft Technology Licensing, Llc Tunable spectral illuminator for camera
CN112752023A (zh) * 2020-12-29 2021-05-04 深圳市天视通视觉有限公司 一种图像调整方法、装置、电子设备及存储介质
US20210339525A1 (en) * 2020-05-01 2021-11-04 Ricoh Company, Ltd. Liquid discharge control device and liquid discharge apparatus incorporating same

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006195069A (ja) * 2005-01-12 2006-07-27 Konica Minolta Photo Imaging Inc 照明装置及び照明制御方法
US7400826B2 (en) * 2005-08-29 2008-07-15 Avago Technologies Ecbu Ip Pte Ltd Imaging device and method for producing a flash of light with pulsing
JP2007243786A (ja) * 2006-03-10 2007-09-20 Fujifilm Corp 撮影装置
DE102007050608A1 (de) * 2007-10-23 2009-04-30 Infineon Technologies Ag Gehäuse für einen Halbleiter-Chip
US7801438B2 (en) * 2008-02-14 2010-09-21 Alok Khuntia Camera integrated with direct and indirect flash units
KR20100087920A (ko) * 2009-01-29 2010-08-06 삼성전자주식회사 영상 데이터 획득 방법 및 장치
JP5543911B2 (ja) * 2010-12-27 2014-07-09 アズビル株式会社 撮像装置および撮像装置の制御方法
CN102437151B (zh) * 2011-11-17 2013-10-16 佛山市蓝箭电子股份有限公司 一种全彩smd led支架结构及其封装产品装置
KR101933189B1 (ko) * 2012-01-31 2019-04-05 서울반도체 주식회사 발광다이오드 패키지
JP5602171B2 (ja) * 2012-03-13 2014-10-08 株式会社東芝 照明装置、撮像装置及び携帯端末
CN102821251B (zh) * 2012-09-03 2016-05-04 广州市盛光微电子有限公司 一种应用快速开关光源的高速摄像方法及应用装置
JP2014063113A (ja) * 2012-09-20 2014-04-10 Routekku:Kk 撮影用照明装置
US20140347553A1 (en) * 2013-05-24 2014-11-27 Samsung Electronics Co., Ltd. Imaging devices with light sources for reduced shadow, controllers and methods
US9420248B2 (en) 2014-09-19 2016-08-16 Qualcomm Incorporated Multi-LED camera flash for color temperature matching
CN106713733B (zh) * 2015-11-17 2022-08-09 清华大学 一种记录物体运动信息的装置及方法
WO2017125280A1 (en) 2016-01-20 2017-07-27 Koninklijke Philips N.V. Driver for an adaptive light source
KR102027106B1 (ko) * 2018-09-28 2019-11-04 한국생산기술연구원 콘트라스트가 향상된 영상취득장치 및 방법, 이를 위한 컴퓨터 프로그램 및 기록매체

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6005616A (en) * 1996-04-26 1999-12-21 Olympus Optical Co. Ltd. Frame-by-frame color image pickup apparatus
US20020191102A1 (en) * 2001-05-31 2002-12-19 Casio Computer Co., Ltd. Light emitting device, camera with light emitting device, and image pickup method
US20030052992A1 (en) * 2001-09-14 2003-03-20 Casio Computer Co., Ltd. Flash device, camera apparatus having the flash device, method of causing the flash device to emit colored rays of light therefrom, and recording medium in which program to control the flash device so as to emit desired colored rays of light is stored
US7050104B1 (en) * 1997-06-30 2006-05-23 Canon Kabushiki Kaisha Image sensing apparatus
US7098946B1 (en) * 1998-09-16 2006-08-29 Olympus Optical Co., Ltd. Image pickup apparatus

Family Cites Families (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2829951B2 (ja) 1987-05-06 1998-12-02 オムロン株式会社 照明付き撮像装置
JP2994139B2 (ja) 1992-05-21 1999-12-27 小糸工業株式会社 テレビカメラ用ｌｅｄ照明装置
JP3504079B2 (ja) * 1996-08-31 2004-03-08 株式会社東芝 半導体発光ダイオード素子の製造方法
JP3165078B2 (ja) 1997-07-24 2001-05-14 協和化成株式会社 表面実装部品の製造方法
JP3471220B2 (ja) * 1998-05-27 2003-12-02 株式会社東芝 半導体発光装置
GB2341482B (en) * 1998-07-30 2003-07-09 Bookham Technology Ltd Lead frame attachment for integrated optoelectronic waveguide device
US6429583B1 (en) * 1998-11-30 2002-08-06 General Electric Company Light emitting device with ba2mgsi2o7:eu2+, ba2sio4:eu2+, or (srxcay ba1-x-y)(a1zga1-z)2sr:eu2+phosphors
DE19931689A1 (de) * 1999-07-08 2001-01-11 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Optoelektronische Bauteilgruppe
JP4288553B2 (ja) 2000-07-25 2009-07-01 富士フイルム株式会社 カメラのストロボ装置
JP3614776B2 (ja) * 2000-12-19 2005-01-26 シャープ株式会社 チップ部品型ｌｅｄとその製造方法
AT410266B (de) * 2000-12-28 2003-03-25 Tridonic Optoelectronics Gmbh Lichtquelle mit einem lichtemittierenden element
JP2002246650A (ja) * 2001-02-13 2002-08-30 Agilent Technologies Japan Ltd 発光ダイオード及びその製造方法
US6429464B1 (en) * 2001-02-16 2002-08-06 Para Light Electronics Co., Ltd. Light emitting diode
JP2002280097A (ja) * 2001-03-19 2002-09-27 Jst Mfg Co Ltd フラッシュメモリカード用コネクタおよびそれを用いた接続構造、ならびにこの接続構造を用いた電子装置
US20020163001A1 (en) * 2001-05-04 2002-11-07 Shaddock David Mulford Surface mount light emitting device package and fabrication method
CN1204632C (zh) * 2001-09-28 2005-06-01 李贞勋 白色发光二极管的制造方法
US20030160889A1 (en) * 2002-02-22 2003-08-28 Gerald Angeli Camera with led lighting source for illuminating a scene to be photographed
JP4211359B2 (ja) * 2002-03-06 2009-01-21 日亜化学工業株式会社 半導体装置の製造方法
JP3705791B2 (ja) * 2002-03-14 2005-10-12 株式会社東芝 半導体発光素子および半導体発光装置
US7264378B2 (en) * 2002-09-04 2007-09-04 Cree, Inc. Power surface mount light emitting die package
JP3093684U (ja) 2002-10-28 2003-05-16 義潤 李 アクセサリ用フルカラー発光装置
KR20040092512A (ko) * 2003-04-24 2004-11-04 (주)그래픽테크노재팬 방열 기능을 갖는 반사판이 구비된 반도체 발광장치

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6005616A (en) * 1996-04-26 1999-12-21 Olympus Optical Co. Ltd. Frame-by-frame color image pickup apparatus
US7050104B1 (en) * 1997-06-30 2006-05-23 Canon Kabushiki Kaisha Image sensing apparatus
US7098946B1 (en) * 1998-09-16 2006-08-29 Olympus Optical Co., Ltd. Image pickup apparatus
US20020191102A1 (en) * 2001-05-31 2002-12-19 Casio Computer Co., Ltd. Light emitting device, camera with light emitting device, and image pickup method
US20030052992A1 (en) * 2001-09-14 2003-03-20 Casio Computer Co., Ltd. Flash device, camera apparatus having the flash device, method of causing the flash device to emit colored rays of light therefrom, and recording medium in which program to control the flash device so as to emit desired colored rays of light is stored

Cited By (65)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060133061A1 (en) * 2004-11-30 2006-06-22 Fuji Photo Film Co. Ltd Image taking apparatus with flash device
US7539407B2 (en) * 2004-11-30 2009-05-26 Fujifilm Corporation Image taking apparatus with flash device
US7603031B1 (en) * 2004-12-15 2009-10-13 Canfield Scientific, Incorporated Programmable, multi-spectral, image-capture environment
US20100166407A1 (en) * 2006-03-30 2010-07-01 Kabushiki Kaisha Toshiba Lighting device, image pickup apparatus and portable terminal unit
WO2007119572A1 (en) * 2006-03-30 2007-10-25 Kabushiki Kaisha Toshiba Lighting device, image pickup apparatus and portable terminal unit
US8107807B2 (en) 2006-03-30 2012-01-31 Kabushiki Kaisha Toshiba Lighting device, image pickup apparatus and portable terminal unit
DE102006029438A1 (de) * 2006-06-20 2007-12-27 Arnold & Richter Cine Technik Gmbh & Co. Betriebs Kg Verfahren und Vorrichtung zur Ansteuerung von Leuchtdioden einer Beleuchtungsvorrichtung
US8115418B2 (en) 2006-06-20 2012-02-14 Arnold & Richter Cine Technik Gmbh & Co. Betriebs Kg Method and device for driving light-emitting diodes of an illumination device
DE102006029438B4 (de) * 2006-06-20 2018-05-17 Arnold & Richter Cine Technik Gmbh & Co. Betriebs Kg Verfahren und Vorrichtung zur Ansteuerung von Leuchtdioden einer Beleuchtungsvorrichtung
US20100176734A1 (en) * 2006-06-20 2010-07-15 Michael Haubmann Method and device for driving light-emitting diodes of an illumination device
US7825958B2 (en) 2007-01-25 2010-11-02 Research In Motion Limited Method and apparatus for controlling a camera module to compensate for the light level of a white LED
US8325249B2 (en) 2007-01-25 2012-12-04 Research In Motion Limited Method and apparatus for controlling a camera module to compensate for the light level of a white LED
US20100165143A1 (en) * 2007-01-25 2010-07-01 Research In Motion Limited Method and apparatus for controlling a camera module to compensate for the color spectrum of a white led
US8670041B2 (en) 2007-01-25 2014-03-11 Blackberry Limited Method and apparatus for controlling a camera module to compensate for the light level of a white LED
US20110025879A1 (en) * 2007-01-25 2011-02-03 Research In Motion Limited Method and apparatus for controlling a camera module to compensate for the light level of a white led
US7978230B2 (en) 2007-01-25 2011-07-12 Research In Motion Limited Method and apparatus for controlling a camera module to compensate for the color spectrum of a white LED
US20110234846A1 (en) * 2007-01-25 2011-09-29 Research In Motion Limited Method and apparatus for controlling a camera module to compensate for the color spectrum of a white led
US8493469B2 (en) 2007-01-25 2013-07-23 Research In Motion Limited Method and apparatus for controlling a camera module to compensate for the color spectrum of a white LED
US20080180544A1 (en) * 2007-01-25 2008-07-31 Marc Drader Method and Apparatus for Controlling a Camera Module to Compensate for the Light Level of a White LED
EP1950977A1 (en) * 2007-01-25 2008-07-30 Research In Motion Limited Method and apparatus for controlling a camera module to compensate for the light level of a white led
US9102857B2 (en) 2008-03-02 2015-08-11 Lumenetix, Inc. Methods of selecting one or more phase change materials to match a working temperature of a light-emitting diode to be cooled
US8632227B2 (en) 2008-03-02 2014-01-21 Lumenetix, Inc. Heat removal system and method for light emitting diode lighting apparatus
US20090219726A1 (en) * 2008-03-02 2009-09-03 Matt Weaver Thermal storage system using phase change materials in led lamps
EP2107419A1 (en) * 2008-04-02 2009-10-07 COEMAR S.p.A. Lighting device for use with a camera
US20090251592A1 (en) * 2008-04-02 2009-10-08 Coemar S.P.A. Lighting device for use with a camera
US20090263117A1 (en) * 2008-04-16 2009-10-22 Avago Technologies Ecbu Ip (Singapore) Pte. Ltd. Camera module, camera-enabled device and method for capturing a frame of image data using a faux flash of light
US8427036B2 (en) * 2009-02-10 2013-04-23 Lumenetix, Inc. Thermal storage system using encapsulated phase change materials in LED lamps
US20110303946A1 (en) * 2009-02-10 2011-12-15 Lumenetix, Inc. Thermal storage system using encapsulated phase change materials in led lamps
US20120258776A1 (en) * 2009-05-01 2012-10-11 Lord John D Methods and Systems for Content Processing
US9008724B2 (en) * 2009-05-01 2015-04-14 Digimarc Corporation Methods and systems for content processing
US9692984B2 (en) 2009-05-01 2017-06-27 Digimarc Corporation Methods and systems for content processing
US9729772B2 (en) 2009-05-07 2017-08-08 Nokia Technologies Oy Apparatus methods and computer readable storage mediums for controlling a flash unit
WO2010128484A3 (en) * 2009-05-07 2014-12-18 Nokia Corporation Controlling flash unit during exposure of image sensor
US8922708B2 (en) 2009-05-07 2014-12-30 Nokia Corporation Apparatus methods and computer readable storage mediums for exposure control
US20100285837A1 (en) * 2009-05-07 2010-11-11 Nokia Corporation Apparatus, methods and computer readable storage mediums
US9749607B2 (en) 2009-07-16 2017-08-29 Digimarc Corporation Coordinated illumination and image signal capture for enhanced signal detection
US10713456B2 (en) 2009-07-16 2020-07-14 Digimarc Corporation Coordinated illumination and image signal capture for enhanced signal detection
US10223560B2 (en) 2009-07-16 2019-03-05 Digimarc Corporation Coordinated illumination and image signal capture for enhanced signal detection
US11386281B2 (en) 2009-07-16 2022-07-12 Digimarc Corporation Coordinated illumination and image signal capture for enhanced signal detection
US8783894B2 (en) 2010-02-12 2014-07-22 Lumenetix, Inc. LED lamp assembly with thermal management system
US9060113B2 (en) 2012-05-21 2015-06-16 Digimarc Corporation Sensor-synchronized spectrally-structured-light imaging
US9593982B2 (en) 2012-05-21 2017-03-14 Digimarc Corporation Sensor-synchronized spectrally-structured-light imaging
US10498941B2 (en) 2012-05-21 2019-12-03 Digimarc Corporation Sensor-synchronized spectrally-structured-light imaging
EP3389344A1 (en) * 2012-10-18 2018-10-17 Seoul Semiconductor Co., Ltd. Light emitting apparatus
US9414780B2 (en) 2013-04-18 2016-08-16 Digimarc Corporation Dermoscopic data acquisition employing display illumination
US9979853B2 (en) 2013-06-07 2018-05-22 Digimarc Corporation Information coding and decoding in spectral differences
US10447888B2 (en) 2013-06-07 2019-10-15 Digimarc Corporation Information coding and decoding in spectral differences
EP2814235A1 (en) * 2013-06-14 2014-12-17 Q Lifestyle Holding AB Camera device with diffuser and related method
WO2014198961A1 (en) * 2013-06-14 2014-12-18 Q Lifestyle Holding Ab Camera device with diffuser and related method
US10170453B2 (en) 2013-06-21 2019-01-01 Osram Opto Semiconductors Gmbh Arrangement and method for generating mixed light
DE102013106519A1 (de) * 2013-06-21 2014-12-24 Osram Opto Semiconductors Gmbh Anordnung zur Erzeugung von Mischlicht und Verfahren zum Betrieb einer Anordnung von Mischlicht
CN103561208A (zh) * 2013-10-12 2014-02-05 浙江大学 一种基于同步触发led和相机的主动成像方法与系统
US10113910B2 (en) 2014-08-26 2018-10-30 Digimarc Corporation Sensor-synchronized spectrally-structured-light imaging
US10455112B2 (en) 2014-11-19 2019-10-22 Digimarc Corporation Optimizing optical scanners for digital watermark detection
US9727941B1 (en) 2014-11-19 2017-08-08 Digimarc Corporation Optimizing optical scanners for digital watermark detection
CN104503306A (zh) * 2014-11-26 2015-04-08 北京航空航天大学 一种多相机同步触发装置及控制方法
US10334147B2 (en) * 2015-06-18 2019-06-25 Canon Kabushiki Kaisha Information processing apparatus, information processing method, and storage medium
US20160373628A1 (en) * 2015-06-18 2016-12-22 Canon Kabushiki Kaisha Information processing apparatus, information processing method, and storage medium
US20200132277A1 (en) * 2018-10-31 2020-04-30 Microsoft Technology Licensing, Llc Tunable spectral illuminator for camera
US10931894B2 (en) 2018-10-31 2021-02-23 Microsoft Technology Licensing, Llc Tunable spectral illuminator for camera
US10982836B2 (en) * 2018-10-31 2021-04-20 Microsoft Technology Licensing, Llc Tunable spectral illuminator for camera
US20200282512A1 (en) * 2019-03-04 2020-09-10 Ebara Corporation Polishing method and polishing apparatus
US11612982B2 (en) * 2019-03-04 2023-03-28 Ebara Corporation Polishing method and polishing apparatus
US20210339525A1 (en) * 2020-05-01 2021-11-04 Ricoh Company, Ltd. Liquid discharge control device and liquid discharge apparatus incorporating same
CN112752023A (zh) * 2020-12-29 2021-05-04 深圳市天视通视觉有限公司 一种图像调整方法、装置、电子设备及存储介质

Also Published As

Publication number Publication date
CN101645442A (zh) 2010-02-10
CN100523985C (zh) 2009-08-05
US8687109B2 (en) 2014-04-01
US20090268084A1 (en) 2009-10-29
CN101645442B (zh) 2011-03-30
CN1580930A (zh) 2005-02-16
JP2005073227A (ja) 2005-03-17

Similar Documents

Publication Publication Date Title
US8687109B2 (en) Image capturing device having pulsed LED flash
US7679672B2 (en) Electronic flash, imaging device and method for producing a flash of light having a wavelength spectrum in the visible range and the infrared range using a fluorescent material
CN1790708B (zh) 具有增强光谱发射的发光二极管闪光模块
KR100984731B1 (ko) 사진촬영용 광원장치
EP2910093B1 (en) Light emitting apparatus
KR101249256B1 (ko) 광 플래쉬 생성 방법 및 촬상 디바이스
JP2010529590A (ja) 固体照明装置
JP2012515945A (ja) カメラの周囲光補償アルゴリズムへのｌｅｄフラッシュのマッチング
JP2006114909A (ja) フラッシュ・モジュール
JP2002207236A (ja) 撮影用照明装置
JP2004349628A (ja) 半導体発光装置及びそれを用いた撮影用照明装置
TWM577510U (zh) Light-emitting device and electronic device
JP5061572B2 (ja) 照明装置及び撮像装置
JP2005114924A (ja) 撮影用照明装置
JP2007017986A (ja) 赤外波長範囲と可視光波長範囲の波長スペクトルを有する出力光を発生する装置及び方法
JP2010015700A (ja) 照明装置、撮像装置
JP2002148686A (ja) 撮影用照光装置
US20060082995A1 (en) Device and method for producing output light having a wavelength spectrum in the infrared wavelength range and the visble wavelength range
KR102561243B1 (ko) 발광 장치
US20170094138A1 (en) Camera strobe having multi-led packages
KR20150062342A (ko) 발광 장치 및 전자 장치
JP2004226509A (ja) ストロボ装置及びカメラ
JP2005091582A (ja) 照明装置
JP2000180926A (ja) 電子閃光装置
JP2005091581A (ja) 照明装置

Legal Events

Date Code Title Description
AS Assignment

Owner name: SHARP KABUSHIKI KAISHA, JAPAN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:KAMETANI, EIJI;YAMAMOTO, YOSHIHIKO;CHIKUGAWA, HIROSHI;REEL/FRAME:015655/0524

Effective date: 20040723

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION