JP3012943U - Imaging tool for magnifying observation - Google Patents

Abstract

(57) [Abstract] [Purpose] At the time of image pickup, the illumination by the built-in lamp and the illumination by the external light are used properly, and the color temperature of the output image from the image pickup means is adjusted according to this use
Further, with respect to the image pickup tool for magnifying observation in which the electronic shutter that switches at high speed is operated, it is not necessary to perform the color temperature switching operation and the shutter operation operation one by one, and the operation procedure is simplified. [Structure] By supplying signals from a power supply circuit of the built-in lamp 4 to a signal line 22 for switching a color temperature and a signal line 23 for switching an operation / non-operation of an electronic shutter, in the camera unit 2 in synchronization with blinking of the built-in lamp. The color temperature is switched and the electronic shutter is switched on and off.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an imaging tool for magnifying observation using a video system.

[0002]

[Prior art]

 FIG. 2 shows an example of a conventional imaging tool of this type (for example, Japanese Patent Laid-Open No. 4-107410 and Japanese Utility Model Laid-Open No. 5-6983). The whole structure is covered with a casing 1 that is long and slender and has a size that can be held with one hand. Inside the casing 1, a camera unit 2 that uses a solid-state imaging device such as a CCD as an imaging mechanism is used. An optical lens unit 3 for forming an image of an object is built therein, and a plurality of lamps 4 for illuminating an imaging object are also built therein. Further, the casing 1 has an image taking-in opening 5 at its tip, and the image of the object M is taken in through the image taking-in opening 5. The image thus obtained by the imaging tool is reproduced on the display and used for magnifying observation.

Further, this image pickup device can change the enlargement magnification by a zoom function provided to the camera unit 2 or a magnification switching function provided to the optical lens unit 3. When the magnification is high, the built-in lamp 4 is used to provide strong illumination to the target area only. When the magnification is low, the angle of view is wide and the brightness is not so high. The illumination light is used.

A change in color temperature occurs due to the proper use of illumination light according to such a magnification. That is, a tungsten lamp or the like is generally used as the built-in lamp 4, but its color temperature is about 2700 ° K, which is very different from 5000 to 6000 ° K of sunlight and general fluorescent lamps. There is. Therefore, the color temperature of the output image from the image pickup means is electronically adjusted depending on whether the illumination by the built-in lamp or the illumination by the external light is used properly. Regarding the change of the color temperature, conventionally, a color temperature changeover switch is provided on the side surface of the casing and the color temperature changeover switch is operated when necessary. That is, the operation procedure was complicated by that much.

Further, this image pickup device is often used indoors, and therefore, the light of a fluorescent lamp is used as the external light in most cases, but since the fluorescent lamp has flicker, its influence is reduced. To eliminate it, an electronic shutter that switches at high speed may be used. In that case, it is necessary to operate the operation switch of the electronic shutter for capturing with external light, which is also a factor of complicating the operation procedure.

FIG. 3 shows a simplified view of the operation system circuit as described above. In the figure, 6 is an operation switch for a built-in lamp, 7 is a power supply line, 8 is a color temperature switching switch, 9 is a color temperature switching signal line to be input to the camera unit 2, 10 is an electronic shutter operation switch, and Reference numeral 11 denotes a signal line to the electronic shutter provided in the camera unit 2. Each switch is provided at an appropriate position on the side surface of the casing, although not shown in FIG.

[0007]

[Problems to be solved by the device]

 The present invention has been made against the circumstances described above, and simplifies the operation procedure by eliminating the need to individually perform color temperature switching operation and shutter operation operation for the above-mentioned imaging tool. The purpose is to plan.

[0008]

[Means for Solving the Problems]

 For this purpose, in the present invention, the image pickup mechanism is built in the casing having the image intake opening, and the illumination lamp is also built in so that the illumination by the built-in lamp and the illumination by the external light can be used separately for imaging. At the same time, the color temperature of the image pickup device for magnifying observation, which is adapted to adjust the color temperature of the output image from the image pickup device according to the use, is switched in conjunction with the blinking of the built-in lamp. There is.

This is because the built-in lamp blinks, that is, the use / non-use of the built-in lamp and the switching of the color temperature always correspond to each other. The color temperature can be switched at the same time, and the operating procedure can be simplified.

Further, according to the present invention, the image pickup mechanism is built-in, and the illumination lamp is also built-in so that the illumination by the built-in lamp and the illumination by the external light are used separately at the time of imaging, and at the same time the external light is used at high speed. With regard to the imaging tool for magnifying observation, which operates the electronic shutter that is switched by, the electronic shutter is switched on and off in synchronization with the blinking of the built-in lamp.

This also focuses on the fact that the use / non-use of the built-in lamp and the use / non-use of the electronic shutter are supported in most cases. The operation and stop of the electronic shutter can be switched at the same time, and the operation procedure can be simplified.

The interlocking of the blinking of the built-in lamp and the switching of the color temperature and the interlocking of the blinking of the built-in lamp and the switching of the operation / stop of the electronic shutter as described above should be performed in conjunction with the operation of the operation switch of the built-in lamp. You can It is also possible to perform this interlocking based on the presence / absence of current flowing in the power supply circuit of the built-in lamp. In other words, the current value and voltage value of the power supply circuit of the built-in lamp should be detected, and the color temperature should be switched and the electronic shutter should be switched on and off on condition that the current value or voltage value exceeds a certain level. You can also

It is more preferable that the interlocking as described above is combined with both the switching of the color temperature and the switching of the operation / stop of the electronic shutter because the operation procedure can be further simplified.

[0014]

【Example】

 An embodiment of the present invention will be described below. The image pickup tool of the present embodiment is similar in basic structure to the conventional image pickup tool described above, and therefore, in the following description, only the structure of the operation system exhibiting the features of the present invention will be taken up.

As shown in FIG. 1, the operation system of the imaging tool of the present embodiment is capable of switching the color temperature between the operation switch 20 of the built-in lamp 4 and the lamp 4 in the power line 21 to the lamp 4. Is connected to a signal line 22 for switching between the operation and non-operation of the electronic shutter. Therefore, when the operation switch 20 is turned ON / OFF, signals are simultaneously given to the signal line 22 and the signal line 23, and the color temperature switching and the electronic shutter operation / non-operation can be switched only by operating the operation switch 20. Can be done.

[0016]

[Effect of device]

 As described above, according to the present invention, it is possible to simplify the operation procedure of an imaging tool that is configured to switch color temperature and switch between operating and not operating the electronic shutter according to the type of illumination light. A better usability can be realized.

[Brief description of drawings]

FIG. 1 is a circuit diagram of an operation system in an imaging tool according to the present invention.

FIG. 2 is a partially cutaway side view showing a simplified internal structure of a conventional imaging tool.

3 is a circuit diagram of an operation system in the imaging tool of FIG.

[Explanation of symbols]

1 casing 2 camera unit 3 optical lens unit 4 lamp 5 image taking opening 20 operation switch 21 power line to lamp 22 signal line for color temperature switching 23 signal line for switching electronic shutter operation / non-operation

Claims (7)

[Scope of utility model registration request] 1. A casing having an image receiving opening,
With a built-in imaging mechanism, a built-in lamp for lighting,
In the imaging tool for magnifying observation, the illumination by the built-in lamp and the illumination by the external light are selectively used at the time of imaging, and the color temperature of the output image from the imaging means is adjusted according to the usage. An imaging tool characterized in that the color temperature is switched in conjunction with the blinking of. 2. The imaging tool according to claim 1, wherein the blinking of the built-in lamp is linked with the operation of the operation switch of the built-in lamp. 3. The image pickup device according to claim 1, wherein the blinking of the built-in lamp is linked based on the presence or absence of a current flowing in a power supply circuit of the built-in lamp. 4. A casing having an image intake opening,
With a built-in imaging mechanism, a built-in lamp for lighting,
In the imaging tool for magnifying observation, the illumination by the built-in lamp and the illumination by the external light are used separately for imaging, and the electronic shutter that switches at high speed when using the external light is operated. An imaging tool characterized in that the electronic shutter is switched between active and inactive in conjunction with blinking. 5. The imaging tool according to claim 4, wherein the blinking of the built-in lamp is linked with the operation of the operation switch of the built-in lamp. 6. The imaging tool according to claim 4, wherein the blinking of the built-in lamp is linked based on the presence / absence of a current flowing in a power supply circuit of the built-in lamp. 7. A casing having an image intake opening,
With a built-in imaging mechanism, a built-in lamp for lighting,
An electronic shutter that uses illumination by a built-in lamp and illumination by external light at the time of image capturing, adjusts the color temperature of an image output from the image capturing unit according to the use, and switches at high speed when using external light In an imaging tool for magnifying observation designed to operate
An imaging tool characterized in that the color temperature is switched in conjunction with the blinking of a built-in lamp and the electronic shutter is switched on and off.