JPS61296872A - Dark field monitoring device - Google Patents

Abstract

PURPOSE:To eliminate an uncomfortable feeling o the visitor by the illumination and the image pickup and to make an image pickup camera compact by storing the image pickup camera consisting of a MOS type solid-state image pickup element sensitive to the infrared radiation, an optical lens and a control circuit together with the infrared ray emitting means for illuminating at night in a casing. CONSTITUTION:An optical unit 5 of an image pickup camera 1 is disposed on an upper part of a casing 4 and a doorphone unit 6 is disposed on a lower part. By operating a push button 3, a doorphone master device in a room is called out to carry out the communication with the inside of the room through a speaker 8 and a microphone 9. On a front surface of a black box 11 disposed so as to cover a MOS type solid-state image pickup element of a printed circuit board 10, an optical unit 5 which is constituted by disposing an optical lens 12 and a control circuit are mounted on a printed circuit board or the like in a back of the speaker 8 in the casing 4, the suitable number of infrared ray emitting diodes 13 are disposed in a side part of the black box 11 and they light up together with the start of the communication by the pressing operation of a push button 7 and the lighting condition is maintained for a prescribed time. Thereby, an entire of the image pickup camera can be thinned and the illuminated condition for photographing at night or the like is not sensed by the visitor so that the uncomfortable feeling is not given.

Description

[Detailed Description of the Invention] [Technical Field] The present invention relates to a night vision monitor device used when a monitoring camera is integrally installed in a doorbell sac that is used by a visitor and enables communication between indoor household members. It is related to.

[Background technology]

Conventionally, it has been proposed to integrate the imaging camera (1) and its illumination light #(2), but in such conventional examples, since the illumination light source (2) is of visible light, When this technology is used to release the doorbell, the push button for calling (
3) The moment you press the button, visible light will be emitted in front of your eyes, which will surprise visitors and make them think that they are being monitored by a TV, making them feel uncomfortable. was there.

[Purpose of the invention]

The present invention uses an MO9O9 type solid-state image sensor in the imaging camera so that visitors, etc. do not feel uncomfortable when they sense that efforts have been made to miniaturize the imaging camera itself. It is an object of the present invention to provide a night vision monitor device that integrates an infrared light emitting device and an infrared light emitting means to simplify installation work and facilitate handling.

[Disclosure of the invention]

FIG. 1 shows a front perspective view of an embodiment in which the present invention is applied to a doorbell ascus. The door phone I-(6) is placed in the door, and by operating the push button (3) at the bottom of the front of the housing, a call is made to the door phone (not shown) on the inside of the room, and the speaker (8)
and a microphone (9) that allows this call inside the room.
The optical unit (6), for example, as shown in FIG. A dark box (II) is installed to cover the dark box (II), and an optical lens θ is installed in front of this dark box (L+). ) is mounted, for example, on a printed circuit board (not shown) behind the speaker (8) inside the housing (4). Further, on the sides of the dark box (11) of the printed board (10), an appropriate number of infrared light-emitting diodes θ→ are arranged, and these infrared light-emitting diodes 03) are connected to, for example, the push button (7). It lights up when you start a call by pressing , and remains lit for a predetermined period of time. In addition, these infrared emitting diodes (131 are the imaging camera t
The infrared light emitting diode 03) is lit intermittently with an output synchronized with the synchronization signal of the video signal 1), thereby making it possible to light the infrared light emitting diode 03) at high output and reduce its power consumption. In Figure 1, the front surface of the optical lens α of the optical unit (5) and the front surface of the infrared emitting diode (13) are filter 0.
4) so that the installation status of the imaging camera +1) is not visible to visitors, etc., so as not to cause discomfort to the visitors.

〔Effect of the invention〕

As described above, the present invention uses an imaging camera consisting of a MOS solid-state image sensor, an optical system in front of it, and a control circuit arranged around this optical system. It is possible to make the camera compact, and the control circuit can be placed separately from the optical system, which has the effect of making it possible to make the entire imaging camera into a book-shaped device. Since the device is integrated with the means, the illuminated window for photographing at night will not be detected by visitors, and therefore will not cause discomfort to visitors. Moreover, there is no need to install a separate light emitting means, and the installation work can be simplified and the handling can be made easier.

[Brief explanation of drawings]

FIG. 1 is a front perspective view of an embodiment of the present invention, FIG. 2 is an enlarged perspective view of essential parts of the same optical unit, and FIG. 3 is a reduced perspective view of a conventional example. )ll'
It is an i-optical lens. Agent Patent Attorney Ishi 1) Chief 7 Figure 1 Figure 2 Figure 3 Procedural amendment (voluntary) September 5, 1985 Patent M No. 138555 No. 138555 of 1985 2 Name of invention Night vision monitor device 3 Case related to the person making the amendment Patent applicant Address 1048 Kadoma, Kadoma City, Osaka Prefecture Name (58
3) Matsushita Electric Works Co., Ltd. Representative: Sadao Fujii 4, Agent postal code: 530 5, Date of original order: M. [1] The description of the scope of claims in Mei #I of the present application is amended as follows. (1) An imaging camera is formed from an optical system consisting of 11 infrared-sensitive image sensors and an optical lens on the front side, and a control circuit placed around this optical system, and this imaging camera is operated at night. A night vision monitor device whose W characteristic is that it is housed in a housing together with infrared light emitting means for illumination.'' [2] Delete "Mo2 type" in line 8, page f52 of the same. [3] On page 4, line 8 of the same page, next to "Shide deru." [Note that a solid-state image sensor such as a COD may be used instead of the MO8 type solid-state image sensor. "[4] rMO3 type" on page 4, line 10 of the same page is deleted.

Claims (1)

[Claims] (1) An imaging camera is formed from an optical system consisting of an infrared ray-sensitive MOS solid-state image sensor and an optical lens in front of it, and a control circuit placed around this optical system, and this imaging camera is operated at night. A night vision monitor device, characterized in that it is housed in a housing together with infrared light emitting means for illumination.