JPS60118829A - Television camera provided with illuminating device - Google Patents

Abstract

PURPOSE:To set various illuminating conditions by placing the lens of a television camera on the upper part of a lower opening cylindrical body, irradiating an object through diffusion plates of two layers via an optical fiber from the upper direction, and leading its reflected light to the television camera through a guide cylinder penetrated the diffusion plates. CONSTITUTION:A light from a light source which is turned on alternately is led into a cylindrical body 6 through optical fibers 1, 2, Its light illuminates a milk- while and translucent diffusion plate A. Its transmitting light passes through the next diffusion plate B and illuminates a body to be inspected 3. Its reflected light is made incident to a lens 5 of a TV camera 4 through a guide cylinder 7 provided so as to penetrate the diffusion plates A, B, Various illuminating conditions can be set by adjusting a brightness of the light source and an arranged position of the diffusion plates A, B.

Description

[Detailed description of the invention] 〔Technical field〕 The present invention relates to a television camera with an illumination device.

[Background Art J] A conventional clamping lighting device for a television camera performs illumination by diffusing light projected through an optical fiber using a single milky-white acrylic diffuser plate. In this case, uniform illumination by the diffuser plate was difficult because the unevenness of light from the optical fiber remained on the diffuser plate. Furthermore, in order to increase the uniformity of the diffused light, it is necessary to increase the distance between the optical fiber and the diffuser plate.

[Purpose of the invention]

The present invention aims to provide a compact camera device in which a lighting device for inspection is integrated with a camera, and various lighting conditions can be set.

[Disclosure of the invention]

The gist of this invention is to install a television camera lens in the upper part of the lower opening cylinder, and to introduce an optical fiber that transmits light from a light source that is turned on alternately in a time-sharing manner. A lighting device characterized by irradiating the outside through a milky-white translucent diffuser plate disposed in two stages at the bottom so as to be movable up and down, and at the same time capturing the reflected light into a television camera via a guide strip pushed through the diffuser plate. It is a television camera with a device.

The present invention will be explained below based on the embodiments shown in FIGS. 1 and 2.

Light from a light source that lights up alternately in time division on the upper part of the lower opening horse body (6) is equally drawn through optical fibers (1) and (2).
As shown in Figure 1, optical fibers (11, (21) At a distance, the beams are irradiated onto a milky-white translucent acrylic diffuser plate disposed inside the body (6) that opens on both sides.

The light irradiated on the diffuser plate (5) is transmitted and further diffused in all directions, and a second milky-white translucent plate is placed inside the lower opening body (6) after 12 distances from the diffuser plate. Diffusion plate CB
+ is illuminated.

The light passing through the expanded D&β) becomes more uniform and illuminates the object to be inspected (3) located at a distance of 18 mm from the diffuser plate width) as uniform light with little light unevenness. This reflected light is diffused into the T
Enter the lens (5) of the V-right camera 4).

The light illuminated on the object to be inspected (3) can be arbitrarily changed by controlling the brightness of the light source and the lighting interval of 11M. Also, by controlling the arrangement position of the diffuser plate (6), it can be changed arbitrarily. Diffusion plate (5), <B)!
@2 As shown in the figure, use a circular guide strip with center C and push through (
7), and can be fixed at any position by tightening with screws (f!!!, l not shown).

The brightness of the light source and the lighting interval are controlled by a dimmer or the like.

In FIG. 2, () and (b) indicate the irradiated light from the optical fibers (1) and (2) projected onto the diffuser plate (5).

Moreover, (Oi, Italy) shows the irradiated light from the optical fibers (1) and C) projected onto the diffuser plate 1B+.

〔Effect of the invention〕

As described above, according to the present invention, since double diffusion is performed using one diffuser plate, it is easy to obtain uniform light, and since each of the two diffusers is movable after nij, various effects can be achieved. Lighting conditions can be easily set and the object to be inspected can be photographed with a camera.

[Brief explanation of the drawing]

be. patent applicant Matsushita Electric Works Co., Ltd. Representative Patent Attorney η Toshimaru Moto (2 idiots) Figure 1 4 Figure 2

Claims (1)

[Claims] (1) A TV camera lens is installed at the top of the lower opening cylinder, and an optical fiber is introduced to catch the light from the optical gap, which is turned on alternately in a time-divided manner, and External irradiation is carried out through a milky-white half-metal diffuser plate arranged in two stages that can be moved up and down, and the reflected light is captured by a television camera via guides 1' and fJ that pass through the diffuser plate. A television camera with a distinctive lighting device.