JPH06245214A - Image pickup device for microscope - Google Patents

Abstract

PURPOSE:To provide an image pickup device for a microscope excellent in the reliability of color by reading whit balance correction data from a storage means so as to apply correction control to white balance due to the difference from a spectral transmittivity of an objective lens. CONSTITUTION:A white balance correction data table 7 consists of a memory and stores white balance correction data (magnification) generated for each kind of objective lenses 3 whose spectral transmittivity differs. An objective lens selection data output device 6 recognizes which of the plural objective lenses 3 is selected by a revolver 4 of a microscope 1 and gives data (kind) of the selected objective lens 3 to an arithmetic unit 8. The arithmetic unit 8 selects data of the objective lens 3 selected by the revolver 4 among data fed from the table 7 and the data is supplied to a television camera 2. The camera 2 executes gain control based on the data to apply correction control to white balance.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a microscope image pickup device in which white balance is controlled according to an objective lens.

[0002]

2. Description of the Related Art In a conventional microscope image pickup apparatus of this type,
The white balance is not corrected by the difference in the spectral transmittance of the objective lens.

[0003]

In the conventional image pickup apparatus for a microscope, the white balance is not corrected by the difference in the spectral transmittance of the objective lens. Therefore, when the objective lens having a different magnification is used, the white balance is not corrected. There is a problem that a subtle difference in color appears due to a difference in spectral transmittance, and reliability of observation and diagnosis from an image from a microscope image pickup device is lacking.

The present invention has been made in view of the above problems, and when the objective lens is changed to, the white balance correction control is performed by the difference in the spectral transmittance of the objective lens, so that the reliability of the color is improved. The object is to obtain an excellent imaging device for microscopes.

[0005]

In order to achieve this object, an image pickup apparatus for a microscope according to the present invention has an objective lens identifying means for identifying the type of an objective lens attached to a revo of a microscope and a spectral transmittance. The white balance correction data is stored by storing the white balance correction data created for each different type of objective lens, and the white balance correction data corresponding to the type of objective lens identified by the objective lens identifying means is read from the storage means to correct the white balance. And a white balance adjusting means.

[0006]

In the microscope image pickup apparatus having the above structure, the white balance correction data created for each different type of objective lens is read out from the storage means to correct the white balance. By performing correction control of white balance due to the difference,
It is possible to obtain a microscope image pickup device having excellent color reliability.

[0007]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a block connection diagram showing an embodiment of an image pickup device for a microscope according to the present invention.

In FIG. 1, a color television camera 2 is mounted on top of a microscope 1. A plurality of objective lenses 3 are attached to the revo 4 of the microscope 1. The data (type) of the objective lens 3 selected by the revo 4 is supplied to the objective lens selection data output device 6. Thereby, the objective lens selection data output device 6 recognizes which one of the plurality of objective lenses 3 has been selected by the revo 4. The objective lens selection data output device 6 supplies the data (type) of the objective lens 3 selected by the revo 4 to the arithmetic device 8.

The arithmetic unit 8 is supplied with the data (type) of the objective lens 3 selected by the revo 4 from the objective lens selection data output unit 6 and the white balance correction data from the white balance correction data table 7. It The white balance correction data table 7 is composed of a memory and stores the white balance correction data shown in FIG. In FIG. 2, the white balance correction data is displayed as the magnification (gain) of the R (red) channel and the B (blue) channel with the G (green) channel as a reference.

As described above, by storing the white balance correction data in the memory as a relative magnification with reference to any one of the RGB channels, the amount of data can be reduced and the adjustment circuit can be simplified. Note that the white balance correction data may be in other data formats such as absolute value data.

The arithmetic unit 8 selects the data (magnification) of the objective lens 3 selected by the revoker 4 from the white balance correction data (magnification) supplied from the white balance correction data table 7 and outputs the color data. Supply to the television camera 2. The color television camera 2
Gain control is performed based on the white balance correction data (magnification) supplied from the arithmetic unit 8 to perform white balance correction control.

For example, when the lens 2 is selected as the objective lens 3, the arithmetic unit 8 causes the R / G data (x
2.3) and B / G data (x1.8) are supplied to the color television camera 2. The color television camera 2 is 2.3 times as much as G (R) channel
Gain control is performed by increasing the gain of the (green) channel by 1.0 times and that of the B (blue) channel by 1.8 times, and the white balance correction control is performed.

[0014]

As described above, according to the image pickup apparatus for a microscope of the present invention, the white balance correction data created for each different type of objective lens is read from the storage means to correct the white balance. By performing the white balance correction control based on the difference in the spectral transmittance of the objective lens, it becomes possible to obtain a microscope image pickup device having excellent color reliability.

[Brief description of drawings]

FIG. 1 is a block connection diagram showing an embodiment of an image pickup apparatus for a microscope according to the present invention.

FIG. 2 is a memory map showing an embodiment of a microscope image pickup apparatus according to the present invention.

[Explanation of symbols]

 1 Microscope 2 Color Television Camera 3 Objective Lens 4 Revo 6 Objective Lens Selection Data Output Device 7 White Balance Correction Data Table 8 Computing Device

Claims (2)

[Claims] 1. An objective lens identifying means for identifying the type of objective lens attached to a revo of a microscope, a storage means for storing white balance correction data created for each type of objective lens having different spectral transmittances, An image pickup apparatus for a microscope, comprising: a white balance adjustment unit that reads out white balance correction data corresponding to the type of objective lens identified by the objective lens identification unit from the storage unit and corrects the white balance. 2. The white balance correction data is RG.
2. The microscope image pickup apparatus according to claim 1, wherein the image pickup apparatus is stored in the storage unit as a relative magnification with reference to any one of the B channels.