JP2007089765A - Fundus camera - Google Patents

Fundus camera Download PDF

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JP2007089765A
JP2007089765A JP2005282052A JP2005282052A JP2007089765A JP 2007089765 A JP2007089765 A JP 2007089765A JP 2005282052 A JP2005282052 A JP 2005282052A JP 2005282052 A JP2005282052 A JP 2005282052A JP 2007089765 A JP2007089765 A JP 2007089765A
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light
level
light amount
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JP4791124B2 (en
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Isao Hiyoshi
功 日吉
Ryoichi Yahagi
良一 矢萩
Takeyuki Kato
健行 加藤
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Topcon Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a fundus camera capable of automatically adjusting the emitting light quantity of a backlight light source corresponding to the light quantity change of external light. <P>SOLUTION: In the fundus camera provided with the backlight light source 11 and provided with a touch panel part for displaying an operation button by illumination from the backlight light source 11, an automatic adjustment part 15 for automatically adjusting the emitting light quantity of the backlight light source 11 is provided. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、バックライト光源を有するタッチパネル部が設けられている眼底カメラの改良に関する。   The present invention relates to an improvement in a fundus camera provided with a touch panel unit having a backlight light source.

従来から、眼底カメラにはバックライト光源を有するタッチパネル部を設けたものが知られている。   Conventionally, a fundus camera provided with a touch panel unit having a backlight light source is known.

このものでは、バックライト光源によりタッチパネル部のパネル面を照明し、パネル面に表示された操作ボタンを操作することにより、暗室でも操作ボタンを視認して所定の処理が実行されるようになっている。   In this device, the panel surface of the touch panel unit is illuminated by the backlight light source, and the operation button displayed on the panel surface is operated, so that the operation button is visually recognized even in a dark room and a predetermined process is executed. Yes.

なお、本発明に係わる類似の技術としてタッチパネル部を有する眼底カメラは知られている（特許文献等１参照）。
特開２００３−０１９１１７号公報 In addition, a fundus camera having a touch panel unit is known as a similar technique according to the present invention (see Patent Document 1).
JP 2003-0119117 A

しかしながら、この種の眼底カメラでは、タッチパネル部のパネル面の輝度調整を手動調整する構成であったので、眼底カメラが置かれている室内を撮影の都度暗くしたり明るくしたりするたびに、撮影者自らがタッチパネル部のパネル面の輝度調整を行って、操作ボタンや表示文字を見えやすくしなければならず、不便であるという問題がある。   However, this type of fundus camera is configured to manually adjust the brightness adjustment of the panel surface of the touch panel, so every time the room in which the fundus camera is placed is darkened or brightened every time it is taken, There is a problem in that it is inconvenient for the person himself / herself to adjust the brightness of the panel surface of the touch panel unit to make the operation buttons and display characters easy to see.

本発明は、上記の事情に鑑みて為されたもので、その目的とするところは、バックライト光源の発光光量を外光の光量変化に応じて自動的に調整できるようにした眼底カメラを提供することにある。   The present invention has been made in view of the above circumstances, and an object thereof is to provide a fundus camera that can automatically adjust the amount of light emitted from a backlight light source according to a change in the amount of external light. There is to do.

請求項１に記載の眼底カメラは、バックライト光源を有し、バックライト光源からの照明により操作ボタンを表示するタッチパネル部が設けられているものにおいて、前記バックライト光源の発光光量を自動調整する自動調整部が設けられていることを特徴とする。   The fundus camera according to claim 1 has a backlight light source and is provided with a touch panel unit that displays operation buttons by illumination from the backlight light source, and automatically adjusts the light emission amount of the backlight light source. An automatic adjustment unit is provided.

請求項２に記載の眼底カメラは、タッチパネル部の近傍に１個の光量検出センサが設けられ、該光量検出センサは外光の光量レベルの検出と前記タッチパネル部のパネル面から放出される放出光の光量レベルの検出とに兼用され、前記自動調整部は前記外光の光量レベルと前記放出光の光量レベルの差を演算する演算手段と、該演算手段の演算結果に基づいて前記バックライトの光源の発光光量を調節する光量調節部とを有することを特徴とする。   The fundus camera according to claim 2 is provided with one light amount detection sensor in the vicinity of the touch panel unit, and the light amount detection sensor detects the light amount level of external light and the emitted light emitted from the panel surface of the touch panel unit. The automatic adjustment unit is configured to calculate a difference between the light amount level of the external light and the light amount level of the emitted light, and based on the calculation result of the calculation means, And a light amount adjusting unit for adjusting a light emission amount of the light source.

請求項３に記載の眼底カメラは、タッチパネルの近傍に１個の光量検出センサが設けられ、該光量検出センサは前記タッチパネル部のパネル面から放出される放出光の光量レベルと外光の光量レベルの検出とに用いられ、眼底の観察又は撮影に用いられる撮像素子が外光の光量レベルの検出に用いられ、前記自動調整部は前記外光の光量レベルと前記放出光の光量レベルの差を演算する演算手段と、該演算手段の演算結果に基づいて前記バックライトの光源の発光光量を調節する光量調節部とを有することを特徴とする。   The fundus camera according to claim 3 is provided with a single light amount detection sensor in the vicinity of the touch panel, and the light amount detection sensor includes a light amount level of emitted light emitted from a panel surface of the touch panel unit and a light amount level of external light. The image sensor used for detecting or detecting the fundus is used for detecting the light amount level of the external light, and the automatic adjustment unit calculates the difference between the light amount level of the external light and the light amount level of the emitted light. It has a calculation means for calculating, and a light amount adjusting unit for adjusting the light emission amount of the light source of the backlight based on the calculation result of the calculation means.

請求項４に記載の眼底カメラは、前記光量調節部は、前記光量検出センサの光量変化をトリガーとして前記演算手段に演算を実行させることを特徴とする。   The fundus camera according to claim 4 is characterized in that the light amount adjusting unit causes the calculation unit to perform a calculation using a change in the light amount of the light amount detection sensor as a trigger.

請求項５に記載の眼底カメラは、前記光量調節部には個人毎の好みに応じた発光光量レベル情報を記憶する記憶メモリが設けられ、前記タッチパネル部には前記記憶メモリに発光光量レベル情報を記憶させる記憶ボタンと、記憶されている発光光量レベル情報を選択させる選択ボタンとが設けられていることを特徴とする。   In the fundus camera according to claim 5, the light amount adjustment unit is provided with a storage memory that stores light emission amount level information according to personal preference, and the touch panel unit stores the light emission amount level information in the storage memory. A storage button to be stored and a selection button to select stored light emission level information are provided.

本発明によれば、外光の光量変化に応じてバックライト光源の発光光量が自動調整されるので便利である。   According to the present invention, the amount of light emitted from the backlight light source is automatically adjusted according to a change in the amount of external light, which is convenient.

以下に、本発明に係わる眼底カメラの実施例を図面を参照しつつ説明する。   Embodiments of a fundus camera according to the present invention will be described below with reference to the drawings.

図１は本発明に係わる眼底カメラの外観図を示し、この図１において、１はベース、２は架台である。ベース１には顎受け兼用の額当て３が設けられている。架台２には、眼底カメラ本体部４、ジョイスティック５、タッチパネル部６が設けられている。   FIG. 1 is an external view of a fundus camera according to the present invention. In FIG. 1, 1 is a base and 2 is a frame. The base 1 is provided with a forehead support 3 also serving as a chin rest. The gantry 2 is provided with a fundus camera main body 4, a joystick 5, and a touch panel unit 6.

眼底カメラ本体部４にはその内部に眼底を観察・撮影する眼底カメラ観察光学系（図示を略す）、眼底照明光学系（図示を略す）、眼底像を表示するモニター部８が設けられている。その眼底観察光学系は眼底像を受像する受像部として撮像素子（ＣＣＤ）９を有する。その眼底観察光学系、眼底照明光学系は公知のもので構わないのでここではその詳細な説明は省略する。   The fundus camera main body 4 is provided with a fundus camera observation optical system (not shown) for observing and photographing the fundus, a fundus illumination optical system (not shown), and a monitor unit 8 for displaying a fundus image. . The fundus oculi observation optical system has an image sensor (CCD) 9 as an image receiving unit for receiving a fundus image. Since the fundus observation optical system and the fundus illumination optical system may be known ones, detailed description thereof is omitted here.

架台２はジョイスティック５の操作によりベース１に対して前後左右方向に移動され、これにより、被検眼に対する眼底カメラ本体部４の位置がセットされる。   The gantry 2 is moved in the front-rear and left-right directions with respect to the base 1 by the operation of the joystick 5, whereby the position of the fundus camera main body 4 with respect to the eye to be examined is set.

タッチパネル部６はパネル面１０を有する。タッチパネル部６は公知の液晶タイプのものが用いられ、図２に示すバックライト照明光源１１を有し、パネル面１０はそのバックライト照明光源１１により適宜輝度（明るさ）で照明される。   The touch panel unit 6 has a panel surface 10. The touch panel unit 6 is of a known liquid crystal type and has a backlight illumination light source 11 shown in FIG. 2, and the panel surface 10 is illuminated with appropriate brightness (brightness) by the backlight illumination light source 11.

そのパネル面１０には、図２に示すように、各観察・撮影モードその他のモードに応じて各種の操作ボタン１２が表示され、操作者はそのこのパネル面１０に表示された各種の操作ボタン１２を適宜操作することにより、その操作ボタン１２が有する処理を実行できるようになっている。   As shown in FIG. 2, various operation buttons 12 are displayed on the panel surface 10 in accordance with each observation / photographing mode and other modes, and the operator can perform various operation buttons displayed on the panel surface 10. By appropriately operating 12, the processing of the operation button 12 can be executed.

ここでは、そのタッチパネル面１０には、撮影光量基準設定用の操作ボタンが表示されている。ここで、「COL」はカラー設定ボタンを意味し、「GR」はグリーン光撮影設定ボタンを意味し、「FA」は可視蛍光設定ボタンを意味し、「ICG」は赤外蛍光設定ボタンを意味し、「VIS」は可視観察設定ボタンを意味し、「IR」は赤外観察設定ボタンを意味し、「・」はデフォルト値設定ボタンを意味し、「数字」は設定光量値ボタンを意味し、「MEMOLIZE」は設定された撮影光量値を記憶させる記憶設定ボタンを意味し、「RETURN」は図示を略すセットメニュー画面に戻させるためのボタンを意味する。   Here, on the touch panel surface 10, an operation button for setting a photographing light quantity reference is displayed. Here, “COL” means the color setting button, “GR” means the green light shooting setting button, “FA” means the visible fluorescence setting button, and “ICG” means the infrared fluorescence setting button. “VIS” means the visible observation setting button, “IR” means the infrared observation setting button, “•” means the default value setting button, and “number” means the set light intensity value button. “MEMOLIZE” means a memory setting button for storing the set photographing light quantity value, and “RETURN” means a button for returning to a set menu screen (not shown).

パネル面１０の周囲には、このパネル面１０を包囲する枠部１３が設けられている。この枠部１３は前面部１３ａと斜面部１３ｂとから概略構成され、正面から見て略長方形状でかつ奥行きを有する外観形状を呈している。   Around the panel surface 10, a frame portion 13 surrounding the panel surface 10 is provided. The frame portion 13 is roughly constituted by a front surface portion 13a and a slope portion 13b, and has an external shape having a substantially rectangular shape and a depth when viewed from the front.

ここでは、斜面部１３ｂに１個の光量検出センサ１４が設けられている。この光量検出センサ１４は室内の光量レベル（外光の光量レベルＸ１）とパネル面１０から放出される放出光Ｘ２の光量レベルの検出とに兼用されている。   Here, one light quantity detection sensor 14 is provided on the slope portion 13b. The light quantity detection sensor 14 is used for both the indoor light quantity level (external light quantity level X1) and the detection of the light quantity level of the emitted light X2 emitted from the panel surface 10.

タッチパネル部６には、図３に示すようにバックライト光源１１の発光光量を自動調整する自動調整部１５が設けられている。この自動調整部１５は外光の光量レベルＸ１と放出光の光量レベルＸ２との差（Ｘ１−Ｘ２）を演算する演算手段１６と、演算手段１６の演算結果に基づいてバックライト光源１１の発光光量を調節する光量調節部１７とを有する。   As shown in FIG. 3, the touch panel unit 6 is provided with an automatic adjustment unit 15 that automatically adjusts the amount of light emitted from the backlight light source 11. The automatic adjustment unit 15 calculates a difference (X1−X2) between the light quantity level X1 of external light and the light quantity level X2 of emitted light, and the light emission of the backlight light source 11 based on the calculation result of the calculation means 16. A light amount adjusting unit 17 for adjusting the light amount.

演算手段１６はメモリ部１６ａ〜１６ｃを有する。メモリ部１６ａは外光の光量レベルＸ１とタッチパネル面１０から放出される放出光の光量レベルＸ２との総和光量レベル（Ｘ１＋Ｘ２）を記憶する役割を果たし、メモリ部１６ｂは外光の光量レベルＸ１を記憶する役割を果たし、メモリ部１６ｃは前回求められた光量レベルＸ１と光量レベルＸ２との総和光量レベル（Ｘ１＋Ｘ２）とを記憶する役割を果たす。   The computing means 16 has memory units 16a to 16c. The memory unit 16a serves to store the total light amount level (X1 + X2) of the light amount level X1 of external light and the light amount level X2 of emitted light emitted from the touch panel surface 10, and the memory unit 16b stores the light amount level X1 of external light. The memory unit 16c plays a role of storing the light amount level X1 and the total light amount level (X1 + X2) of the light amount level X2 obtained last time.

演算手段１６には光量検出センサ１４からの光量検出信号が逐次入力され、演算手段１６はメモリ部１６ｃに保存されている総和光量レベル（Ｘ１＋Ｘ２）と今回測定されかつメモリ部１６ａに保存されている総和光量レベル（Ｘ１＋Ｘ２）の差を演算し、演算手段１６はその光量変化をトリガーとして放出光の光量レベルＸ２を求める演算を実行する。   The light quantity detection signal from the light quantity detection sensor 14 is sequentially input to the calculation means 16, and the calculation means 16 is measured with the total light quantity level (X1 + X2) stored in the memory section 16c and stored in the memory section 16a. The difference between the total light quantity levels (X1 + X2) is calculated, and the calculation means 16 performs a calculation for obtaining the light quantity level X2 of the emitted light by using the change in the light quantity as a trigger.

なお、室内が明るい方から暗い方に変化したのか、暗い方向から明るい方に変化したのかは、メモリ部１６ｃに保存されている総和光量レベル（Ｘ１＋Ｘ２）と今回測定されかつメモリ部１６ａに保存されている総和光量レベル（Ｘ１＋Ｘ２）との差の正負により判断できる。   Whether the room has changed from brighter to darker or darker to brighter is measured with the total light amount level (X1 + X2) stored in the memory unit 16c and stored in the memory unit 16a. This can be determined by the sign of the difference from the total light amount level (X1 + X2).

ついで、演算手段１６は光量調節部１７に向かって消灯信号を出力し、バックライト光源１１をいったん消灯させる。光量検出センサ１４はバックライト光源１１の消灯時の外光の光量レベルＸ１を検出し、演算手段１６にはこの光量レベルＸ１に相当する光量検出信号が入力される。演算手段１６はこの光量レベルＸ１を一旦メモリ部１６ｂに記憶させる。   Next, the computing means 16 outputs a turn-off signal toward the light amount adjusting unit 17 to turn off the backlight light source 11 once. The light quantity detection sensor 14 detects a light quantity level X1 of external light when the backlight light source 11 is turned off, and a light quantity detection signal corresponding to the light quantity level X1 is input to the calculation means 16. The calculating means 16 temporarily stores the light amount level X1 in the memory unit 16b.

ついで、演算手段１６は、室内が明るい方から暗い方に変化した場合には、メモリ部１６ｂに保存されている光量レベルＸ１と光量レベルＸ２との差が所定値Δに近づく方向にバックライト光源１１の発光光量を減少させるべく光量調節部１７を制御する。   Next, when the room changes from a brighter one to a darker one, the calculating means 16 returns the backlight light source in the direction in which the difference between the light amount level X1 and the light amount level X2 stored in the memory unit 16b approaches the predetermined value Δ. 11 is controlled to reduce the amount of emitted light.

一方、演算手段１６は、室内が暗い方から明るい方に変化した場合には、メモリ部１６ｂに保存されている光量レベルＸ１と光量レベルＸ２との差が所定値Δに近づく方向にバックライト光源１１の発光光量を増加させるべく光量調節部１７を制御する。   On the other hand, when the room changes from a darker one to a brighter one, the calculating means 16 returns the backlight light source in the direction in which the difference between the light amount level X1 and the light amount level X2 stored in the memory unit 16b approaches the predetermined value Δ. 11 is controlled to increase the amount of emitted light.

ここで、所定値Δは、外光の光量レベルＸ１とパネル面１０の表面輝度から定まる経験値であり、人の目がパネル面１０に表示されている文字ＸＸＸその他の記号ＹＹＹ、図形を見るのに適した光量レベル差を意味し、外光の光量レベルＸ１に応じて適宜複数のものを準備すると都合が良い。   Here, the predetermined value Δ is an empirical value determined from the external light quantity level X1 and the surface brightness of the panel surface 10, and the human eye sees the characters XXX and other symbols YYY and figures displayed on the panel surface 10. It is convenient to prepare a plurality of light sources appropriately according to the light amount level X1 of external light.

なお、光量レベルＸ２の自動調整後、演算手段１６は、メモリ部１６ａに保存されている総和光量レベル（Ｘ１＋Ｘ２）をメモリ部１６ｃに転送し、このメモリ部１６ｃに転送されかつ保存された総和光量レベル（Ｘ１＋Ｘ２）は次回の光量レベルＸ２調整の際に前回求められた総和光量レベル（Ｘ１＋Ｘ２）として用いられる。   After the automatic adjustment of the light quantity level X2, the calculation means 16 transfers the total light quantity level (X1 + X2) stored in the memory section 16a to the memory section 16c, and the total light quantity transferred to and stored in the memory section 16c. The level (X1 + X2) is used as the total light amount level (X1 + X2) obtained last time in the next adjustment of the light amount level X2.

ここでは、１個の光量検出センサ１４を用いて外光の光量レベルＸ１とパネル面１０の放出光の光量レベルＸ２との総和光量レベル（Ｘ１＋Ｘ２）を検出する構成とするために、バックライト光源１１を一旦消灯させる構成としているが、図４に示すように、撮像素子９からの撮像信号を演算手段１６に入力させることにより外光の光量レベルＸ１を検出する構成とすれば、バックライト光源１１をいったん消灯させることなく、外光の光量レベルＸ１を直接求めることができる。   Here, in order to employ a configuration in which the total light amount level (X1 + X2) of the light amount level X1 of external light and the light amount level X2 of the emitted light from the panel surface 10 is detected using one light amount detection sensor 14, a backlight light source is used. 11 is temporarily turned off. However, as shown in FIG. 4, if the light quantity level X1 of the external light is detected by inputting the image pickup signal from the image pickup device 9 to the calculation means 16, the backlight light source The light amount level X1 of the external light can be directly obtained without turning off 11 once.

すなわち、この場合には、メモリ部１６ｂに前回の外光の光量レベルＸ１を記憶させ、演算手段１６は撮像素子９からの光量レベルＸ１とメモリ部１６ｂに記憶されている光量レベルＸ１との差を演算し、外光の光量レベルＸ１が変化したか否かを判断する。   That is, in this case, the memory unit 16b stores the previous light amount level X1 of external light, and the calculation unit 16 determines the difference between the light amount level X1 from the image sensor 9 and the light amount level X1 stored in the memory unit 16b. To determine whether or not the external light quantity level X1 has changed.

室内が明るい方から暗い方に変化したのか、暗い方から明るい方に変化したのかは、撮像素子９からの光量レベルＸ１とメモリ部１６ｂに記憶されている光量レベルＸ１との差の正負により判断される。   Whether the room has changed from brighter to darker or darker to brighter is determined by the sign of the difference between the light amount level X1 from the image sensor 9 and the light amount level X1 stored in the memory unit 16b. Is done.

また、演算手段１６は今回の測定により求められかつメモリ部１６ａに記憶されている光量レベル（Ｘ１＋Ｘ２）と今回測定した光量レベルＸ１との差を演算し、これによりパネル面１０からの放出光の光量レベルＸ２を求める。   The calculating means 16 calculates the difference between the light amount level (X1 + X2) obtained by the current measurement and stored in the memory unit 16a and the light amount level X1 measured this time, and thereby the emission light from the panel surface 10 is calculated. The light level X2 is obtained.

ついで、演算手段１６は、室内が明るい方から暗い方に変化した場合には、今回測定した光量レベルＸ１と光量レベルＸ２との差が所定値Δに近づく方向にバックライト光源１１の発光光量を減少させるべく光量調節部１７を制御する。   Next, when the room changes from a brighter one to a darker one, the calculating means 16 changes the amount of light emitted from the backlight source 11 in the direction in which the difference between the light amount level X1 and the light amount level X2 measured this time approaches the predetermined value Δ. The light amount adjusting unit 17 is controlled so as to decrease.

一方、演算手段１６は、室内が暗い方から明るい方に変化した場合には、今回測定した光量レベルＸ１と光量レベルＸ２との差が所定値Δに近づく方向にバックライト光源１１の発光光量を増加させるべく光量調節部１７を制御する。   On the other hand, when the room changes from a darker one to a brighter one, the calculating means 16 changes the amount of light emitted from the backlight light source 11 in the direction in which the difference between the light amount level X1 and the light amount level X2 measured this time approaches the predetermined value Δ. The light amount adjusting unit 17 is controlled to increase the light amount.

ついで、演算手段１６は、その今回求められた外光の光量レベルＸ１をメモリ部１６ｂに記憶させる。このメモリ部１６ｂに記憶された光量レベルＸ１は次回の演算の際に前回測定した光量レベルＸ１として用いられる。   Next, the computing means 16 stores the external light amount level X1 obtained this time in the memory unit 16b. The light amount level X1 stored in the memory unit 16b is used as the light amount level X1 measured last time in the next calculation.

以上、実施例について説明したが、図３に示すように、自動調整部１５に個人毎の好みに応じた発光光量レベル情報を記憶する記憶メモリ１５ａを設け、図２に示すように枠部１３の前面部１３ａに記憶メモリ１５ａにバックライト光源１１の発光光量レベル情報を記憶させる記憶ボタン１７と、記憶されている発光光量レベル情報を選択させる選択ボタン１８とを設け、個人毎にバックライト光源１１の発光量を選択する構成とすることもできる。   As described above, the embodiment has been described. As shown in FIG. 3, the automatic adjustment unit 15 is provided with the storage memory 15a for storing the light emission amount level information according to the preference for each individual, and as shown in FIG. Is provided with a storage button 17 for storing light emission light level information of the backlight light source 11 in a storage memory 15a and a selection button 18 for selecting stored light emission light level information. It is also possible to adopt a configuration in which 11 light emission amounts are selected.

本発明の発明の実施の形態に係わる眼底カメラの外観図である。1 is an external view of a fundus camera according to an embodiment of the present invention. 図１に示すタッチパネル部の正面図である。It is a front view of the touch panel part shown in FIG. 図２に示すタッチパネル部のブロック回路図である。It is a block circuit diagram of the touch panel part shown in FIG. 図２に示すタッチパネル部の他の例を示すブロック回路図である。It is a block circuit diagram which shows the other example of the touchscreen part shown in FIG.

符号の説明Explanation of symbols

１１…バックライト光源
１５…自動調整部 11 ... Backlight source 15 ... Automatic adjustment unit

Claims (5)

バックライト光源を有し、バックライト光源からの照明により操作ボタンを表示するタッチパネル部が設けられている眼底カメラにおいて、
前記バックライト光源の発光光量を自動調整する自動調整部が設けられていることを特徴とする眼底カメラ。 In a fundus camera having a backlight source and provided with a touch panel unit that displays operation buttons by illumination from the backlight source,
A fundus camera comprising an automatic adjustment unit that automatically adjusts the amount of light emitted from the backlight light source. タッチパネル部のパネル面の近傍に１個の光量検出センサが設けられ、該光量検出センサは外光の光量レベルの検出と前記タッチパネル部のパネル面から放出される放出光の光量レベルの検出とに兼用され、前記自動調整部は前記外光の光量レベルと前記放出光の光量レベルの差を演算する演算手段と、該演算手段の演算結果に基づいて前記バックライトの光源の発光光量を調節する光量調節部とを有することを特徴とする請求項１に記載の眼底カメラ。 One light amount detection sensor is provided in the vicinity of the panel surface of the touch panel unit, and the light amount detection sensor detects a light amount level of external light and a light amount level of emitted light emitted from the panel surface of the touch panel unit. The automatic adjustment unit is also used for calculating the difference between the light amount level of the external light and the light amount level of the emitted light, and adjusts the light emission amount of the light source of the backlight based on the calculation result of the calculation means. The fundus camera according to claim 1, further comprising a light amount adjustment unit. タッチパネル部のパネル面の近傍に１個の光量検出センサが設けられ、該光量検出センサは前記タッチパネル部のパネル面から放出される放出光の光量レベルの検出と外光の光量レベルの検出とに用いられ、眼底の観察又は撮影に用いられる撮像素子が外光の光量レベルの検出に用いられ、前記自動調整部は前記外光の光量レベルと前記放出光の光量レベルの差を演算する演算手段と、該演算手段の演算結果に基づいて前記バックライトの光源の発光光量を調節する光量調節部とを有することを特徴とする請求項１に記載の眼底カメラ。 One light amount detection sensor is provided in the vicinity of the panel surface of the touch panel unit, and the light amount detection sensor detects a light amount level of emitted light emitted from the panel surface of the touch panel unit and a light amount level of external light. An imaging device used for observing or photographing the fundus is used for detecting the light level of external light, and the automatic adjustment unit calculates a difference between the light level of the external light and the light level of the emitted light. The fundus camera according to claim 1, further comprising: a light amount adjustment unit that adjusts a light emission amount of the light source of the backlight based on a calculation result of the calculation unit. 前記光量調節部は、前記光量検出センサの光量変化をトリガーとして前記演算手段に演算を実行させることを特徴とする請求項２に記載の眼底カメラ。 The fundus camera according to claim 2, wherein the light amount adjustment unit causes the calculation unit to perform calculation using a change in light amount of the light amount detection sensor as a trigger. 前記光量調節部には個人毎の好みに応じた発光光量レベル情報を記憶する記憶メモリが設けられ、前記タッチパネル部には前記記憶メモリに発光光量レベル情報を記憶させる記憶ボタンと、記憶されている発光光量レベル情報を選択させる選択ボタンとが設けられていることを特徴とする請求項１ないし請求項４のいずれか１項に記載の眼底カメラ。 The light intensity adjustment unit is provided with a storage memory for storing light emission light level information according to individual preferences, and the touch panel unit stores a storage button for storing the light emission light level information in the storage memory. The fundus camera according to any one of claims 1 to 4, further comprising a selection button for selecting light emission level information.
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