JP2007025212A - Magnified image pickup unit - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To pick up a focused image regardless of whether a magnification is low or high, without needing detachment of a cap as well as exchange of a lens when changing the magnification. <P>SOLUTION: A low magnification observation aperture (7L) with a large aperture diameter is formed in an observation head (2). Also, an aperture diameter adjustment plate (8) having a high magnification observation aperture (7H) with a small diameter is supported so as to be rotatable around a support point (P1) formed in the observation head (2) and so as to move forward or backward with respect to the low magnification observation aperture (7L). The magnified image pickup unit includes: a magnification adjustment mechanism (M<SB>1</SB>) by which a lens (9) composing an imaging optical system (4) is reciprocally moved along an imaging optical axis (X) between a low magnification observing position (Q<SB>L</SB>) and a high magnification observing position (Q<SB>H</SB>) by a cylindrical cam (C) operated to rotate around the imaging optical axis (X); and an aperture diameter adjustment mechanism (M<SB>2</SB>) by which the aperture diameter adjustment plate (8) is moved forward or backward with respect to the low magnification observation aperture (7L) by the cylindrical cam (C) in synchronization with the mechanism (M<SB>1</SB>). <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an enlargement imaging apparatus for magnifying and observing the surface of an object to be observed, and in particular, a beauty staff who sells cosmetics determines the optimal cosmetics, champagne, etc. according to the condition of the customer's skin and scalp. This is suitable for magnifying and observing the customer's skin, scalp, etc.

Cosmetics are applied directly to the skin to make the skin appear white or rough skin becomes smoother, so each cosmetic manufacturer offers many types of cosmetics according to the skin quality. I sell it.
Therefore, while consumers can select cosmetics that suit their skin quality from many types, they are often unable to select truly suitable cosmetics because they do not know their skin quality.

This is the same for beauty staff who sell cosmetics, and if you know exactly the skin quality of your customers, you can advise on cosmetics and skin care that are appropriate for that skin quality. The actual situation is that he advises cosmetics that will fit the customer's skin quality based on the experience and intuition he has cultivated.
Therefore, recently, various diagnostic devices have been introduced to promote the sales of cosmetics, and each company has been working hard to provide the best cosmetics for customers' skin quality.

A magnified imaging device for observing the skin is also used as one of such diagnostic devices, but there is a demand for observing by changing the magnification factor depending on the observation target.
For example, when observing the fineness of the texture formed by fine twills that run diagonally in the vertical and horizontal directions, it is preferable to image a range of 1 to 2 cm in diameter with a relatively low imaging magnification of about 20 times. When observing each of the textures (textures), it is preferable to image a very limited area having a diameter of 1 to 2 mm with a high imaging magnification of about 200 times.

However, in order to change the imaging magnification, it is troublesome to change the lens or change the illumination light intensity by operating the switch, so the applicant is troublesome to change the lens every time the magnification is changed. In addition, there has been proposed a trouble-free enlargement imaging apparatus that performs a switch operation for switching the intensity of illumination light each time the magnification is changed.
Japanese Patent No. 3626415

  According to this enlargement imaging apparatus, the imaging magnification can be switched by moving the position of the bifocal lens in the optical axis direction, and the low magnification imaging illumination and the high magnification imaging illumination are automatically switched according to the position of the lens. Since switching is performed, there is no need to perform any switch operation for exchanging lenses or switching illumination light.

However, since imaging is performed through one observation hole during both low-magnification imaging and high-magnification imaging, the observation hole must be made relatively large to have a diameter of 15 mm in accordance with a low-magnification imaging area.
Therefore, when this is pressed against the skin, the skin swells in the observation hole due to its elasticity, and when imaging at a low magnification with a deep depth of field, yet when imaging at a high magnification with a shallow depth of field Caused the problem of focusing or shifting depending on how the skin swelled.

  For this reason, during high-magnification imaging, it is necessary to cover the cap with a small-diameter observation hole to prevent the skin from rising, and there is no need to replace the lens. There is also the trouble of having to prepare a spare cap in preparation.

  Therefore, the present invention provides a technical problem that when changing the magnification, it is not necessary to replace the lens, and it is not necessary to attach and detach the cap, and it is possible to capture a focused image at both low magnification and high magnification. It is said.

  In order to achieve this object, the present invention makes the observation hole of the dome-shaped observation head formed on the imaging optical axis abut on the surface of the object to be observed, and the object to be observed that has entered from the observation hole. An magnifying imaging apparatus having an imaging device that magnifies an image at a predetermined magnification by an imaging optical system and illuminates an observation object from the inside of the observation head. The observation head is formed so that a large-diameter low-magnification observation aperture that serves as a hole is formed, and an aperture adjustment plate that forms a small-diameter high-magnification observation aperture that serves as an observation hole moves forward and backward with respect to the low-magnification observation aperture. A cylindrical cam that is rotatably supported by a fulcrum formed inside and that is rotated around the imaging optical axis allows part or all of the lenses constituting the imaging optical system to extend along the imaging optical axis direction. Low magnification observation position and high A magnification adjusting mechanism for reciprocating the rate observation position, is characterized in that a diameter adjusting mechanism for advancing and retracting the diameter adjusting plate by the cylindrical cam in conjunction with this for low magnification observation aperture.

According to the magnifying imaging device of the present invention, by rotating the cylindrical cam, a part of or all of the lenses constituting the imaging optical system can be observed along the imaging optical axis direction at a low magnification observation position and a high magnification observation position. The optical magnification can be switched between low magnification and high magnification.
Further, when the lens is moved, the aperture adjustment plate is retracted in conjunction with this, so that the object to be observed can be imaged through the large aperture low magnification observation aperture formed in the observation head.
The aperture adjustment plate advances and the aperture adjustment plate advances during high-magnification observation, so that the object to be observed can be imaged via the high-magnification observation aperture with a small aperture.
Therefore, by simply rotating the cylindrical cam, the lens position can be moved and the optical magnification can be switched. At the same time, the aperture of the observation hole can be adjusted according to the optical magnification. There is no need to perform special operations.

  When the illumination light intensity needs to be changed, the illumination system includes a low-magnification imaging illumination that illuminates an imaging area at the time of low-magnification imaging and an imaging area at the time of high-magnification imaging. A high-magnification imaging illumination that illuminates at a higher illuminance than the low-magnification imaging illumination is provided, and when the optical magnification is changed, the low-magnification imaging illumination and the high-magnification imaging illumination are switched on in conjunction with this change. That's fine.

  In this example, when changing the magnification, in addition to replacing the lens, it is not necessary to attach and detach the cap, and in order to achieve the purpose of capturing a focused image at both low and high magnifications. In addition, the lens and the aperture adjustment plate are simultaneously moved by the cylindrical cam so that the optical magnification is switched and the aperture of the observation hole is adjusted simultaneously.

  FIG. 1 is a schematic configuration diagram showing a magnifying imaging apparatus according to the present invention, FIG. 2 is an explanatory diagram showing a positional relationship of an imaging optical system according to the magnification, and FIG. 3 is an explanatory diagram showing an illumination system.

  The magnified imaging device 1 shown in FIG. 1 has an observation hole 3 of the dome-shaped observation head 2 formed on the imaging optical axis X in contact with the surface of the observation object, and the observation object incident from the observation hole 3 Is provided with an imaging device 5 for enlarging the image of the image to a predetermined magnification by the imaging optical system 4 and an illumination system 6 for irradiating the observation object with illumination light from the inside of the observation head 2.

The observation head 2 is formed with a large-diameter low-magnification observation aperture 7L serving as an observation hole 3 and a small-diameter high-magnification observation aperture 7H serving as an observation hole 3 having a low-magnification observation aperture. as forward and backward relative to 7L, and is rotatably supported to the fulcrum P ₁ formed in the observation head 2.

  The imaging optical system 4 includes a lens holder 10 equipped with a bifocal lens 9 that can be used at two magnifications, a low magnification (for example, 30 times) and a high magnification (for example, 120 times), in parallel with the imaging optical axis X. The lens barrel 11 is slidably disposed in the fixed barrel 11.

The imaging head 2 is moved by a cylindrical cam C that is rotated around the imaging optical axis X so that the lens 9 constituting the imaging optical system 4 is moved along the imaging optical axis X direction to the low magnification observation position Q _L and the high magnification. A magnification adjusting mechanism M ₁ that reciprocates to the observation position Q _H and a diameter adjusting mechanism M ₂ that moves the aperture adjusting plate 8 forward and backward with respect to the low-magnification observation aperture 7L by the cylindrical cam C in conjunction therewith. .

In the magnification adjusting mechanism M ₁ , a driven pin 12 protruding from the peripheral surface of the lens holder 10 is inserted into a linear slit S ₁ of the lens barrel 11 and a linear slit S ₂ formed on the peripheral surface of the observation head 2. The cylindrical cam C is engaged with the lens cam groove 13.
The lens cam groove 13, for example, a cylindrical cam C when rotated 90 degrees, the distance d ₁ between the starting point 13a and end point 13b are, from low magnification observation position Q _L to the high magnification observation position Q _H Lens It is equally designed moving distance D _L.

Diameter adjusting mechanism M ₂ is an observation head 2 serving as a fixed link, the diameter adjusting plate 8 serving as a follower, the link 14 and 15 both lever mechanism pivotally connected to at fulcrum P ₁ to P ₄ Section 4 L and a slider link 17 connected to the link 15 on the driving side via an intermediate link 16, and a driven pin 17 a formed on the slider link 17 is a straight line formed on the peripheral surface of the observation head 2. is inserted into the slit S _3, it is engaged with the aperture regulating cam groove 18 of the cylindrical cam C.
The aperture adjusting cam groove 18 is arranged with a phase difference of 180 degrees with respect to the lens cam groove 13. For example, when the cylindrical cam C is rotated by 90 degrees, a distance between the start point 18 a and the end point 18 b is set. distance d ₂ is designed at a distance capable of advancing and retracting the diameter adjustment plate 8.

Thus, the lens 9 when the cylindrical cam C rotates 90 degrees when in the low magnification observation position Q _L, distance X ahead imaging optical axis lens holder 10 via the driven pin 12 by the lens cam groove 13 d ₁ = D _{L is} moved, and the lens 9 is positioned at the high magnification observation position Q _H.
At the same time, the slider link 17 is moved forward by the distance d ₂ via the driven pin 17 a by the aperture adjusting cam groove 18, and the driving side link 15 of the lever mechanism L is raised via the intermediate link 16. The aperture adjusting plate 8 is rotated around the fulcrum P ₁ by being driven, so that the low-magnification observation aperture 7L opened in the observation head 2 is closed, and the small-magnification high-magnification observation aperture 7H is imaged as the observation hole 3. It will be located on the optical axis X.

Further, when the cylindrical cam C rotates 90 degrees in the opposite direction when the lens 9 is at a high magnification observation position Q _H, the lens holder 10 via the driven pin 12 by the lens cam groove 13 in the X backward imaging optical axis The distance d ₁ = _{DL is} moved, and the lens 9 is positioned at the high magnification observation position Q _L.
At the same time, the slider link 17 is moved rearward by the distance d ₂ via the driven pin 17 a by the aperture adjusting cam groove 18, and the driving side link 15 of the lever mechanism L is pulled through the intermediate link 16. since the diameter adjustment plate 8 which has blocking the low magnification observation aperture 7L and driven retreats is inverted around the fulcrum P ₁ from the imaging optical axis X, the observation head 2 is opened, the large diameter low magnification observation aperture 7L Is positioned on the imaging optical axis X as the observation hole 3.

  The illumination system 6 includes a low-magnification imaging illumination 20L that illuminates an imaging area surrounded by the low-magnification observation aperture 7L during low-magnification imaging, and a low-magnification imaging illumination that illuminates the imaging area surrounded by the high-magnification observation aperture 7H during high-magnification imaging. The high-magnification imaging illumination 20H that illuminates at a higher illuminance than 20L is provided, and when the low-magnification observation aperture 7L and the high-magnification observation aperture 7H are positioned on the imaging optical axis X, the low-magnification imaging illumination 20L is linked to this. And illumination switching means 21 for switching on and lighting the high magnification imaging illumination 20H.

  In this example, a large number of high-intensity white LEDs are arranged in a ring around the imaging optical axis X, and as shown in FIG. 3, twelve pieces of high-magnification imaging illumination 20H are arranged at 30 ° central angles. LEDs and six LEDs that become low-magnification imaging lighting 20L arranged at intervals of 60 ° between the central angles are attached to a ring-shaped pedestal 22.

The low-magnification imaging illumination 20L uses an LED with a wide illumination angle, and its illumination optical axis is arranged obliquely toward the center of the observation hole 3, so that the inside of the low-magnification observation aperture 7L can be illuminated uniformly. Yes.
The high-magnification imaging illumination 20H uses an LED with a narrow irradiation angle, and is illuminated in a spot manner within the high-magnification observation aperture 7H.

  In this way, the number of LEDs of the high-magnification imaging illumination 20H is arranged more than the LEDs of the low-magnification imaging illumination 20L, and the high-magnification imaging illumination 20H is condensed so that the irradiation area is the irradiation area of the low-magnification imaging illumination 20L. Therefore, the high magnification imaging illumination 20H can illuminate with high illuminance, and a sufficiently bright image can be obtained.

Further, as the illumination switching means 21, in this example, as shown in FIG. 1, two microswitches 25L and 25H for lighting the low-magnification and high-magnification imaging lights operated by the driven pin 12 formed on the lens holder 10 are used. It has.
Microswitch 25L for low magnification imaging illumination lights, the lens 9 is disposed corresponding to the position of the follower pin 12 when located in low-magnification observation position Q _L, microswitch 25H for high magnification imaging illumination lit, lens 9 is arranged to correspond to the position of the follower pin 12 when located in the high magnification observation position Q _H.

Therefore, the lens 9 when located in low-magnification observation position Q _L, the micro switch 25L for low magnification imaging illumination lights are turned ON by the follower pin 12, the low-power imaging illumination 20L is turned on.
The lens 9 when positioned in the high magnification observation position Q _H, microswitch 25H high magnification imaging illumination lights are turned ON by the follower pin 12, so that the high magnification imaging illumination 20H are turned on.

  Further, although not shown, the enlargement imaging device 1 has a built-in driver for the image sensor 5, which transmits an image signal to a computer or the like by wire or wirelessly and displays the image on a computer display. .

The above is one configuration example of the present invention, and the operation thereof will be described next.
First, when imaging at a low magnification, the enlargement imaging device 1 is connected to a computer (not shown), the main switch (not shown) of the imaging device 1 is turned on, and then the cylindrical cam C is rotated to the low magnification side. if brought into, the lens 9 is positioned to move backwards to the low-power imaging position Q _L, as shown in conjunction with this FIG. 1 (a), the low magnification observation aperture 7L diameter adjusting plate 8 is retracted Is opened as an observation hole 3 on the imaging optical axis X.

  At the same time, the driven pin 12 formed on the lens holder 10 turns on the micro switch 25L and the low-magnification imaging illumination 20L is turned on. In this state, the observation head 2 is placed on the skin to be observed. When applied, the part surrounded by the low-magnification observation aperture 7L is imaged at a magnification of 30 times.

Then, when imaging at high magnification, is rotated a cylindrical cam C to a high magnification side, the lens 9 is positioned to move forward at a high magnification image pickup position Q _H, in conjunction with this FIG. 1 (b ), The aperture adjustment plate 8 advances to close the low-magnification observation aperture 7L, and the high-magnification observation aperture 7H is opened as the observation hole 3 on the imaging optical axis X.

  At the same time, the driven pin 12 formed on the lens holder 10 turns on the micro switch 25H and the low-magnification imaging illumination 20H is turned on. In this state, when the observation head 2 is applied to the skin to be observed. The portion surrounded by the high magnification observation aperture 7H is imaged at a magnification of 120 times.

  As described above, according to the magnifying imaging device 1 of the present example, the lens 9 can be positioned at a predetermined position and the magnification conversion can be performed only by rotating the cylindrical cam C. As a result, the low-magnification observation aperture 7L and the high-magnification observation aperture 7H can be positioned on the optical axis, and the illumination 20L and 20H can be switched.

  In the description of the above embodiment, the case in which the cylindrical cam C is mounted on the observation head 2 and directly rotated by hand has been described. However, the present invention is not limited to this, and the cylindrical cam C is built in the imaging head 2. Alternatively, it may be rotated integrally with an operation ring provided on the imaging head 2 or may be built in the imaging head 2 together with a small motor and driven by the motor.

  In the present invention, the beauty staff who sells cosmetics determines the surface of an object to be observed such as the customer's skin or scalp, for example, when determining the optimal cosmetics or champulins depending on the condition of the customer's skin or scalp. It is suitable for applications in which the magnification is changed such as 20 times and 200 times.

1 is a schematic configuration diagram showing an enlarged imaging apparatus according to the present invention. Explanatory drawing which shows the relationship between a cylindrical cam and a driven pin. Explanatory drawing which shows an illumination system.

Explanation of symbols

DESCRIPTION OF SYMBOLS ₁ Magnification imaging device 2 Observation head 3 Observation hole X Imaging optical axis 4 Imaging optical system 5 Imaging element 6 Illumination system 9 Lens 8 Aperture adjustment plate M ₁ Magnification adjustment mechanism M ₂ Aperture adjustment mechanism C Cylindrical cam

Claims (4)

The observation hole of the dome-shaped observation head formed on the imaging optical axis is brought into contact with the surface of the observation object, and the image of the observation object incident from the observation hole is enlarged to a predetermined magnification by the imaging optical system. In an enlargement imaging device comprising an imaging device for imaging and an illumination system for irradiating illumination light to the object to be observed from the inside of the observation head,
A large-diameter low-magnification observation aperture that serves as an observation hole is formed in the observation head, and an aperture adjustment plate that forms a small-diameter high-magnification observation aperture that serves as an observation hole moves forward and backward with respect to the low-magnification observation aperture. In addition, it is rotatably supported by a fulcrum formed in the observation head,
Magnification by which a part or all of the lenses constituting the imaging optical system are reciprocated between the low magnification observation position and the high magnification observation position along the imaging optical axis direction by a cylindrical cam that is rotated around the imaging optical axis. An enlargement imaging apparatus comprising: an adjustment mechanism; and an aperture adjustment mechanism that moves the aperture adjustment plate with respect to the low-magnification observation aperture in conjunction with the adjustment mechanism.   The magnifying observation apparatus according to claim 1, wherein the aperture adjustment mechanism is a link mechanism having a slider that moves back and forth by the cylindrical cam as a prime mover and the aperture adjustment plate as a follower.   The illumination system includes a low-magnification imaging illumination that illuminates the observation object during low-magnification imaging, and a high-magnification imaging illumination that illuminates the observation object with higher illuminance than the low-magnification imaging illumination during high-magnification imaging, and moves the lens The magnifying image pickup apparatus according to claim 1, further comprising an illumination switching unit that turns on the low-magnification imaging illumination and the high-magnification imaging illumination in conjunction with the low-magnification observation position and the high-magnification imaging illumination when positioned at the low-magnification observation position and the high-magnification observation position. The magnification imaging apparatus according to claim 3, wherein a plurality of high-brightness LEDs are annularly arranged around the imaging optical axis as the low-magnification imaging illumination and the high-magnification imaging illumination.

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