JPH04133570A - Image recorder - Google Patents

Abstract

PURPOSE:To pick up record, and display a zoomed image without changing the focal distance of a lens by scanning a dark object by irradiating the object with spot light in steps by using a step motor, etc., and scanning a bright object by receiving the light from the object in steps. CONSTITUTION:Areas Aa, Ba, Ca, Ab, Bb, Cb, Ac, Bc, and Cc are successively irradiated and scanned in steps and the rays of light received from the areas are recorded at corresponding memory addresses after photoelectric conversion. The recorded data are read out to a display. On the other hand, The area Bb is successively irradiated and scanned in the order of, for example, A'a', B'a',..., C'c' by narrowing the beam spot and the rays of light obtained from each subarea are recorded at corresponding memory addresses and the recorded data are read out to the display. Therefore, a zoomed image of an object can be obtained without lowering the resolution and S/N.

Description

Detailed Description of the Invention "Industrial Application Field" The present invention decomposes different parts of an object into an equal number of matrix parts, sequentially sweeps and receives each matrix part in a stepwise manner, and transmits the light to a transducer in a Fourier state. The present invention relates to an image recording device that records images as Fourier signals through images.

``Prior art'' In conventional image recording devices, like cameras, the reflected light from the entire subject is collected at once and recorded on the film surface or COD.
An image is formed on a light-receiving element and recorded on a film or electronic recording medium. In addition, even when copying, enlarging, or reducing a portion of an object, such as with a copy machine or facsimile, the continuous sweep time is delayed to increase the resolution of the object.
Processing is performed by increasing the number of pixels to be read.

[Problem to be solved by the invention] In conventional methods, zoom operations require operations such as changing the focal length of the lens or increasing storage capacity, and increasing the zoom may result in a decrease in resolution or S /N decrease.

``Means for Solving the Problems'' The present invention improves resolution by simply changing the irradiation light spot size and sweep range, or by separating the light from the subject into a matrix and receiving the light in each part in a stepwise manner. Or, in order to provide a device that can perform a zoom operation with a constant S/N, there is an irradiation unit that emits a light spot with a variable spot diameter, and a sweep that moves this light spot in steps, and the step width To provide an image recording device comprising: a light spot sweep section for changing a sweep range; and a memory section for recording reflected light from an object at each step position of the light spot as a Fourier signal through a transducer in a Fourier transform state.

In addition, for the same purpose, the light from the subject is decomposed into a matrix state with a constant number and variable area, the light is received by sweeping each matrix part stepwise, and the light is passed through a transducer in a Fourier transformed state and recorded as a Fourier signal. An image recording device is provided.

"Operation" The image recording device according to the present invention uses a step motor or the like to irradiate and scan a dark subject with spot light in a stepwise manner, or to scan light from a bright subject in a stepwise manner in order to record the subject separately. Receive light.

"Example" The present invention will be described in detail below with reference to the drawings. 1 to 4 show a first embodiment of the invention, in which like parts are designated by like symbols. Figures 1 and 2 show a device that irradiates and sweeps a spotlight on a subject 1 placed in a generally dark space, where 2 is a lens, 3 is a matrix point light source, and 4
is a point light source with irradiation directionality, 5 is a supporter, and point light source 4
A motor 8 such as a stepping motor is built in to rotate this point light source in a stepwise manner about the X rotation axis 6.

7 is a 7-rotation shaft; 9 is a motor 9 such as a stepping motor that rotates the support 5 in a step manner about the 7-rotation shaft 7;
and 10 is a housing that accommodates these 4 to 9 device members.

Next, these operations will be explained. In FIG. 1, the matrix point light source 3 is made to emit light horizontally as Aa, Ba, Ca, etc. in sequence, then Ab, Bb, Cb, etc., and in the same manner, all the point light sources As it emits light, it sequentially illuminates the entire surface of the subject 1 through the lens 2 (.By moving the lens 2 in the optical axis direction, the area irradiated on the subject by one point light source and the total area of the subject 1 are The total irradiation area of the subject can be varied.

Next, in FIG. 2, the rotation of the motor 8 causes the point light source 4 to
Sweeps the light beam horizontally in steps,
The irradiation direction can be changed vertically by the motor 9. The resulting irradiation of the object and the action of the lens 2 are the same as in the example shown in FIG. FIGS. 3 and 4 are diagrams illustrating a state in which spot light irradiated onto the subject 1 is received in a Fourier transformed state, subjected to photoelectric conversion, and then recorded in a memory. Figure 3 shows Aa, Ba,...Mm...
The reflected light from the sequentially irradiated parts of the subject is received by the light receiving element 11, converted into an electrical signal, and stored in an arbitrary memory 12.
, for example, recorded on a floppy disk, semiconductor memory, etc. FIG. 4 shows an example in which light is received through the lens 12.

Next, a case will be described in which a zoom effect is performed in such an apparatus. FIGS. 5(a) to 5(c) are diagrams for explaining this. For the sake of simplicity, let's take the case of nine spot light irradiations as an example.
With the configuration device shown in the figure, areas Aa, Ba, Ca, Ab, Bb, Cb, Ac, Bc, and C are shown in FIG. 5(a).
The light is irradiated and scanned sequentially in steps as shown in FIG. 3 or 4, and after being received and photoelectrically converted by a device such as that shown in FIG. When this recorded data is read out on the display, it is displayed as shown in FIG. 5(b). On the other hand, the beam spot is narrowed down as shown in Figure 5 (
a) A'a',B'a,...C'
When the irradiation and scanning are sequentially performed in a stepwise manner as shown in FIG. 5(C) and recorded in the corresponding memory addresses, and read out on the display, the image is displayed as shown in FIG. 5(C).

From the above explanation, it can be seen that zooming up is possible without deteriorating resolution or S/N.

The above embodiment is an active example in which a light beam is irradiated onto a dark subject and the reflected light is received. The present invention can also be implemented as a passive device that scans a subject irradiated with light in steps and receives the light.

Further, the subject may be something like a document or an object such as a person, and can be applied to various subjects.

Furthermore, colorization is possible by using three primary color light beams (active) or three primary color separation light receiving elements (passive).

"Effects of the Invention" According to the device of the present invention, zoom imaging, recording, and
can be displayed.

[Brief explanation of drawings]

1 to 5 are diagrams for explaining the present invention in detail,
1 and 2 are schematic diagrams illustrating the configuration of the apparatus of the present invention in which the light spot is moved stepwise and swept; FIGS. 3 and 4 are schematic diagrams illustrating the configuration for receiving and recording light; FIGS. 5(a) to 5(C) are diagrams for explaining the zoom effect. 1... Subject, 2... Lens, 3... Matrix point light source, 4... Point light source, 11... Light receiving element 12... Memory

Claims (1)

[Claims] 1. A light spot irradiation unit with a variable spot diameter; a light spot sweep unit that sweeps the light spot by moving it in steps; and a light spot sweep unit that changes the step width and sweep range; An image recording device comprising: a memory section that records reflected light from a subject at each step position of a spot as a Fourier signal through a transducer in a Fourier transformed state. 2. It is characterized by decomposing the light from the subject into a matrix state with a constant number and variable area, sweeping each matrix part stepwise to receive the light, passing it through a transducer in a Fourier transformed state, and recording it as a Fourier signal. Image recording device.