CN107018337A - Blade, shutter unit and infrared shooting device - Google Patents

Abstract

Present invention offer one kind can be opened and closed in the short time and temperature easily becomes uniform blade, shutter unit and infrared shooting device.Blade (12) is used for infrared shooting device, has：The basic unit (21) of tabular, is made up of resin；Metal film (22), is configured in the basic unit (21).The metal film (22) can be only fitted to basic unit (21) it is two-sided on.The metal film (22) can expose on surface.Shutter unit has：Blade (12)；Shutter base plate, with the opening portion being opened and closed by blade (12)；Actuator, driving blade (12).

Description

Blade, shutter unit and infrared shooting device

Technical field

The present invention relates to blade, shutter unit and infrared shooting device.

Background technology

Infrared shooting device is used to obtain infrared image.In infrared shooting device, because of each pixel of capturing element The difference of characteristic, heat from framework etc. to capturing element, the heating of capturing element itself transmitted from etc., and occur captured The uneven phenomenon for being referred to as shade (shading) is produced on infrared image.Therefore, uniformly it is shot even in shooting temperature In the case of body, it can also be produced on infrared image uneven.It is uneven in order to eliminate this, seek to eliminate the shadow caused by shade Ring.

Patent document 1 discloses a kind of infrared shooting device, in order to eliminate the influence caused by shade, set in the vicinity of lens The shutter unit with opening portion is equipped with, will be when closing opening portion using blade to be shot to the uniform face of temperature View data stored in memory as shadow data, for each corresponding pixel, quilt is shot from opening portion is opened The view data during infrared image of body is taken the photograph, stored shadow data is subtracted, and export to frame memory.

Patent document 1：Japanese Unexamined Patent Publication 10-274564 publications

The infrared shooting device of patent document 1 is not limited to, in infrared shooting device, in order that blade is uniform temperature Degree, blade is made up of metals such as the high aluminium of thermal conductivity.But, because the blade being made up of metal has big matter Amount, so there are the following problems, i.e. the load applied to actuator is big, and on-off shutter blade spends the time.

In order that blade is opened and closed in a short time, it is also considered that compared to the blade being made up of metal, use quality is small PET(Polyethylene Terephthalate：Polyethylene terephthalate) blade that constitutes of the resin such as resin. But, because the thermal conductivity of resin is small, so the blade being made up of resin is compared with the blade being made up of metal, deposit The problem of temperature is difficult to become uniform.

The content of the invention

The present invention is to propose in view of the above problems, and its object is to can be in short time opening and closing and temperature appearance there is provided one kind Variable uniform blade, shutter unit and infrared shooting device.

To achieve these goals, the blade of the 1st viewpoint of the invention is the fast gate flap used in infrared shooting device Piece, has：

The basic unit of tabular, is made up of resin；

Metal film, is configured in the basic unit.

So, because the basic unit of blade is made up of the small resin of mass density, so the matter of blade can be made Amount diminishes.Therefore, in the case where blade is configured at into camera, actuator during driving blade can be reduced Load, being capable of on-off shutter in a short time.Further, since blade has the high metal film of thermal conductivity, so fast gate flap The temperature of piece easily becomes uniform.Therefore, camera can obtain close blade in the state of shoot temperature it is uniform The infrared image of blade.

For example, metal film can be only fitted to basic unit it is two-sided on.

So, the more uniform temperature of blade can be made.

For example, the metal film can expose on surface.

So, the more uniform temperature on the surface of blade can be made.

To achieve these goals, the shutter unit of the 2nd viewpoint of the invention has：The blade；Shutter base plate, has The opening portion being opened and closed by the blade；Actuator, drives the blade.

The shutter unit is configured at the infrared shooting device with capturing element, in the blade described fast Gate flap piece closes the part observed during the opening portion from the capturing element side and is configured with the metal film.

So, due to the quality of blade can be made smaller, thus can within the shorter time on-off shutter blade.

To achieve these goals, the infrared shooting device of the 3rd viewpoint of the invention has：

The shutter unit；

Lens, make the infrared image of subject be imaged on imaging surface；

Capturing element, shoots and is imaged on the infrared image on imaging surface through the lens.

Invention effect

In accordance with the invention it is possible to provide, one kind can be opened and closed in the short time and temperature easily becomes uniform blade, shutter list Member and infrared shooting device.

Brief description of the drawings

Fig. 1 is the sectional view for the camera for representing embodiment.

Fig. 2 is the exploded view of the shutter unit of embodiment.

Fig. 3 is the sectional view of the blade of embodiment.

Fig. 4 is the figure of the action for the blade for representing embodiment.

Fig. 5 is the figure of the action for the blade for representing embodiment.

Fig. 6 is the block diagram of the structure for the camera for representing embodiment.

Fig. 7 A and Fig. 7 B are the sectional views of the variation for the blade for representing embodiment.Fig. 8 A~Fig. 8 C are to represent to implement The figure of the variation of the blade of mode.

Wherein, description of reference numerals is as follows：

11 shutter base plates

12 (12A~12C) blades

13 actuators

14 opening portions

21 basic units

22 metal films

23A~23C holes

24A~24C through holes

25 drive pins

26 bars

27 pins

28 holes

29 through holes

31 space bars

32 blade press sections

33rd, 35 screw

34 plain washers

36 leads

37 diaphragms

100 cameras

101 lens

102 capturing elements

103 shutter units

104 control units

111 shutter control portions

112 amendment data acquiring sections

113 shade correction portions

114 display control units

115 operating portions

Embodiment

(embodiment)

Hereinafter, exemplified by the blade that camera (infrared shooting device) is used, referring to the drawings to embodiment of the present invention Blade illustrate.

As shown in figure 1, the camera 100 of present embodiment has lens 101, capturing element 102, shutter unit 103, control unit 104.Camera 100 is used as the infrared cameras such as onboard camera and theft-proof camera, shoots moving image or rest image Infrared image.

Lens 101 make the infrared image of subject be imaged on imaging surface.Lens 101 are made infrared by silicon, germanium, calcirm-fluoride etc. The material that line is passed through is constituted.

Capturing element 102 is configured at imaging surface, shoots the infrared image being imaged on by lens 101 on shooting face, and will represent The view data of captured infrared image is exported to control unit 104.Capturing element 102 is for example by regarding pn-junction diode as temperature The thermal infrared capturing element of quick element is constituted.

Shutter unit 103 is used to obtain shading correction data, and the shading correction data is used to remove in captured infrared image It is upper to produce the uneven influence caused by shade, as shown in Fig. 2 shutter unit 103 has shutter base plate 11, blade 12 (12A~12C), actuator 13.Shutter unit 103 is configured in the vicinity of lens 101, is between-lens shutter, according to from control unit 104 The electric signal of output, blade 12 is opened and closed.

Shutter base plate 11 is the supporting member for installing blade 12, actuator 13 etc., the opening portion 14 with exposure.

Blade 12A~12C is the sheet component that the opening portion 14 of exposure is opened and closed.As shown in figure 3, fast gate flap The metal film 22 that piece 12A~12C has the basic unit 21 for the tabular being made up of resin and configured in basic unit 21.Basic unit 21 for example by PET(Polyethylene Terephthalate：Polyethylene terephthalate) etc. resin constitute.The thickness T1 of basic unit 21 It is the thickness for the shape that can keep blade 12, depending on the shapes and sizes of blade 12, but for example, 10 μm~ 500μm.Metal film 22 exposes configuration on surface, be cover basic unit 21 the side of capturing element 102 face metal film, for example by By vapour deposition method, the evaporation film of the metal of AM aluminum metallization etc. is formed in basic unit 21.When the thickness T2 of metal film 22 is thickening, Heat can be preferably conducted, but the quality of blade 12 becomes big, when the thickness T2 of metal film 22 is thinning, blade 12 Quality diminish, it can be difficult to conduction heat.The thickness T2 of metal film 22 is with the large and fast gate flap of the mass conservation of blade 12 The mode of the uniformity of temperature profile of piece 12, can be to the overall thickness for conducting heat of blade 12, depending on blade 12 Shapes and sizes etc., but for example, 10nm~1000nm.In addition, the thickness T2 of metal film 22, the thickness T1 of basic unit 21 ratio It is that can conduct heat to the entirety of blade 12 and make the small ratio of the quality of blade 12, such as (thickness of metal film 22 T2)/(the thickness T1 of basic unit 21) is 0.00002~0.1.

As shown in FIG. 4 and 5, there is hole 23A in blade 12A root.The vertically disposed branch on shutter base plate 11 Shaft insertion hole 23A is supportted, blade 12A can be swung using the support shaft as fulcrum.In addition, in blade 12A root The vicinity in portion is provided with the through hole 24A of the insertion of drive pin 25 for being set in actuator 13.When actuator 13 makes drive pin When position shown in 25 from Fig. 4 rotates counterclockwise, to through hole 24A applying powers, blade 12A is using hole 23A as branch Point, rotates to the position shown in Fig. 5 counterclockwise.

In addition, there is hole 23B, 23C in blade 12B, 12C root.Inserted in the vertically disposed support shaft of shutter base plate 11 Enter hole 23B, 23C, blade 12B, 12C can be swung by fulcrum of support shaft.In addition, in blade 12B, 12C The vicinity of root be provided with through hole 24B, 24C of the insertion of pin 27 for being set on bar 26.It is vertical in shutter base plate 11 In the hole 28 of the support shaft insertion rod 26 of setting, bar 26 can be swung by fulcrum of support shaft.In addition, being set on bar 26 There is the through hole 29 of the insertion of drive pin 25 for being set in actuator 13.When actuator 13 makes drive pin 25 from shown in Fig. 4 When position rotates counterclockwise, bar 26 is that fulcrum rotates to the position shown in Fig. 5 clockwise with hole 28.When bar 26 When rotating clockwise, to through hole 24B, 24C applying power, blade 12B, 12C using hole 23B, 23C as fulcrum, to Position shown in counterclockwise rotates to Fig. 5.

In addition, as shown in Fig. 2 being provided with space bar 31, fast gate flap between blade 12A and blade 12B and 12C Piece 12A~12C is arranged on shutter base plate 11 by blade pressing plate 32.Blade pressing plate 32 is fixed on shutter base plate by screw 33 On 11.In addition, the plain washer 34 being enclosed on the pin 27 of bar 26 is configured between bar 26 and blade 12B, blade 12B and Between blade 12C, between blade 12C and blade pressing plate 32.

Actuator 13 is fixed on shutter base plate 11 by screw 35, and is connected with the lead 36 for being supplied to electric power.Actuator 13 With the drive pin 25 shown in Fig. 4 and Fig. 5, to drive blade 12.

As shown in fig. 6, control unit 104 has shutter control portion 111, amendment data acquiring section 112, shade correction portion 113, display Control unit 114, operating portion 115, and can be electrically connected in the way of input and output electric signal with capturing element 102 and actuator 13 Connect.In addition, control unit 104 is for example by one or more processors, ROM (Read 0nly Memory), RAM (Random Access Memory), flash memory etc. constitutes.

Shutter control portion 111 exports the electric signal that the on-off action to shutter is controlled to actuator 13.Specifically, soon Gate control portion 111 will drive the electricity of blade 12 when shooting the infrared image of subject in the way of opening opening portion 14 Signal is exported to actuator 13, will when shooting the infrared image for correcting the acquisition shading correction data of data acquiring section 112 The electric signal of blade 12 is driven to be exported to actuator 13 in the way of closing opening portion 14.

Data acquiring section 112 is corrected before the infrared image of subject is shot, is obtained for the infrared image execution to subject The shading correction data of shade amendment.In addition, often by Time constant (such as 1 minute) from being obtained shading correction data, just Obtain shading correction data.Correct data acquiring section 112 and obtain expression bat in the state of blade 12 closes opening portion 14 The infrared picture data that element 102 shoots the infrared image that blade 12 is obtained is taken the photograph, the infrared picture data is regard as shade Correct data storage in a flash memory.

Shade correction portion 113 is based on the newest shading correction data stored in a flash memory, to being clapped in the state of shutter is opened The infrared image for taking the photograph the subject captured by element 102 performs shade amendment.Specifically, shade correction portion 113 is for each Pixel, newest shade amendment number is subtracted from based on the infrared picture data for subject shoot obtained infrared image According to, obtain subtract after infrared picture data.The infrared picture data after subtracting is stored in flash memory by shade correction portion 113 In.

Display control unit 114 is exported the infrared picture data after Minus are gone is stored in a flash memory to display, over the display Show the infrared image after subtracting.

Operating portion 115 receives the operation of the beginning from user, the operation for stopping shooting etc..

Then, the action for the infrared image for shooting moving image to the camera 100 of present embodiment is illustrated.

When operating portion 115 receives to shoot the instruction of moving image, in response to this, amendment data acquiring section 112 is via fast gate Portion 111 processed makes actuator 13 drive blade 12, and opening portion 14 is closed as shown in Figure 5.

Then, amendment data acquiring section 112 makes the infrared image of the shooting blade 12 of capturing element 102, by blade 12 Infrared image obtained as shading correction data, and store in a flash memory.

Then, amendment data acquiring section 112 makes actuator 13 drive blade 12 via shutter control portion 111, as shown in Figure 4 Open opening portion 14 like that.

Then, amendment data acquiring section 112 makes capturing element 102 start to shoot the infrared image of the moving image of subject, and Storage is in a flash memory.Shade correction portion 113 is directed to each pixel, is subtracted from the infrared picture data of each infrared image of subject Shading correction data, the infrared picture data storage after subtracting is in a flash memory.

Then, the infrared image after what display control unit 114 made to store in a flash memory subtract is shown over the display.

Amendment data acquiring section 112 starts timing after shading correction data is obtained, when (such as 1 point of Time constant is passed through in judgement Clock) when, capturing element 102 is interrupted the shooting of the infrared image of subject.Then, amendment data acquiring section 112 is obtained again Shading correction data, and store in a flash memory, then, capturing element 102 is started again at the infrared of the moving image of subject The shooting of image.

Then, shade correction portion 113 performs shade amendment using newest shading correction data to infrared image.

Afterwards, amendment data acquiring section 112 is repeated and obtains the fortune of shading correction data, shade correction portion 113 to subject The infrared image of motion video performs shade amendment, display control unit 114 and shows the infrared image of revised moving image so Processing, until operating portion 115 receive stop shoot operation untill.When operating portion 115 receives the operation for stopping shooting, shine Camera 100 stops shooting infrared image.

In the camera 100 of present embodiment, because the basic unit 21 of blade 12 is made up of the small resin of mass density, institute So that the quality of blade 12 can be made to diminish.Therefore, actuator 13 when camera 100 can make driving blade 12 Load diminishes, being capable of on-off shutter in a short time.Thus, when repairing correction data acquisition unit 112 obtains shading correction data, energy The time for enough making blade 12 close opening portion 14 shortens.As a result, camera 100 can make the motion diagram of interruption subject The time of the shooting of the infrared image of picture shortens.Further, since the quality of blade 12 is small, so even with small power Blade 12 can be kept in the state of the state of opening or closing.

In addition, blade 12 has the high metal film 22 of thermal conductivity, so the temperature of blade 12 easily becomes uniform.Cause This, camera 100 can obtain shooting the red of the uniform blade 12 of temperature in the state of blade 12 is closed Outer image, the infrared picture data shown by the infrared image can act as shading correction data.

In addition, amendment data acquiring section 112 often just obtains shading correction data by Time constant, shade correction portion 113 is utilized Newest shading correction data is modified, thus, even if because of the heat transmitted around camera 100 to capturing element 102 Or capturing element 102 heating of itself etc. makes temperature change of capturing element 102 etc., also it is able to carry out high-precision shade and repaiies Just.

(variation)

In the camera 100 of above-mentioned embodiment, to capturing element 102 by using pn-junction diode as temperature sensing element heat The situation that infrared shooting element is constituted is illustrated, still, as long as capturing element 102 can shoot the shooting of infrared image Element, is not particularly limited, for example, can also be made up of the infrared shooting element of bolometer mode.

In addition, in above-mentioned blade 12, basic unit 21 is illustrated by PET situations about constituting, but 21, basic unit Will be small by mass density and constitute, be not particularly limited with the resin of intensity that can be used as blade 12, For example can be by makrolon (PC), polymethyl methacrylate (PMMA), polyethylene, polypropylene, polyvinyl chloride, polyphenyl second The resin of alkene, acrylonitrile-butadiene-styrene (ABS) (ABS), polyamide (PA) etc. is constituted.

In addition, in above-mentioned blade 12, the situation that metal film 22 is made up of aluminium is illustrated, but as long as by heat conduction The rate metal higher than resin is constituted, and is not particularly limited, can be made up of metals such as silver, copper, gold, nickel, iron.In metal film 22 by the case that the metals such as thermal conductivity high silver, copper are constituted, the temperature of blade 12 easily becomes evenly.In addition, golden Category film 22 is not limited to situation about being made up of single metal, can also be by based on the metals such as aluminium, silver, copper, gold, nickel, iron Alloy is constituted.

In addition, in above-mentioned blade 12, metal film 22 is that the evaporation film in basic unit 21 is deposited by vapour deposition method Situation is illustrated, but metal film 22 is configured into the method in basic unit 21 and is not particularly limited, and can also pass through sputtering Method forms metal film 22 in basic unit 21, and metal film 22 can also be plated in basic unit 21, can also attach gold in basic unit 21 Belong to film 22.

In addition, the situation that metal film 22 is configured on the one side of basic unit 21 is illustrated, but as shown in Figure 7 A, can also In the two-sided configuration metal film 22 of basic unit 21.In this case, the high metal film of the two-sided configuration thermal conductivity in basic unit 21 is passed through 22, the temperature of blade 12 is easier to become uniform.In addition, the situation that metal film 22 exposes on surface is illustrated, but It is as shown in Figure 7 B, the diaphragm 37 being made up of resin etc. can also to be configured on metal film 22.By configuration protection film 37, from And metal film 22 is difficult to peel off.

In addition, the situation to the configured in one piece metal film 22 in basic unit 21 is illustrated, but as shown in Fig. 8 A~Fig. 8 C, Only metal film 22 can be configured in the part (part represented with oblique line) observed when closing shutter of basic unit 21.Such one Come, the area of metal film 22 diminishes, and can obtain the smaller blade 12 of quality.

In addition, the situation that above-mentioned shutter unit 103 is used as between-lens shutter is illustrated, still, if it is possible to by closing Close shutter shooting image to obtain shading correction data, however it is not limited to as between-lens shutter, be also used as focal-plane shutter.

The present invention can be realized in the case where not departing from the spirit and scope of broad sense of the present invention various embodiment and Deformation.In addition, above-mentioned embodiment is used to illustrate rather than to be defined the scope of the present invention.That is, it is of the invention Scope do not shown by embodiment by claims.Also, within the scope of the claims and the invention equal with it Meaning in the range of the various modifications implemented be considered as within the scope of the invention.

Industrial applicability

The present invention can be applied to the infrared shooting device of onboard camera and theft-proof camera etc..

Claims (6)

1. a kind of blade, is used in infrared shooting device, it is characterised in that had：

The basic unit of tabular, is made up of resin；

Metal film, is configured in the basic unit.

2. blade as claimed in claim 1, it is characterised in that

Metal film configuration the basic unit it is two-sided on.

3. blade as claimed in claim 1 or 2, it is characterised in that

The metal film exposes on surface.

4. a kind of shutter unit, its feature is being, has：

Blade any one of claims 1 to 3；

Shutter base plate, with the opening portion being opened and closed by the blade；

Actuator, drives the blade.

5. shutter unit as claimed in claim 4, it is characterised in that

The shutter unit is configured at the infrared shooting device with capturing element,

In the portion observed when the blade closes the opening portion from the capturing element side of the blade Distribution is equipped with the metal film.

6. a kind of infrared shooting device, it is characterised in that have：

Shutter unit described in claim 4 or 5；

Lens, make the infrared image of subject be imaged on imaging surface；

Capturing element, shoots and is imaged on the infrared image on imaging surface through the lens.