The object glass of the strabismus hard endoscope (1), the level composition plane which inclines the aforementioned object glass (1) axis (18) vis-a-vis (6 and 16) with two prisms which it adjoins mutually (4 and 7) to possess the prism assembly body which consists of, aforementioned distal (2036) prism (4) aforementioned object glass (1) line of sight (17) the distal (2036) end face which is vertical to have (3), the aforementioned proximal prism (7) incidence do the light ray which incidence is done (5) the aforementioned distal (2036) prism (4) and the aforementioned composition plane (6 and 16) the transmitted territory (19) with through from the aforementioned end face, the description aboveRadiation it does inside the proximal prism the tilt slope (8) the 1st mirror (9) with the aforementioned composition plane (16) the 2nd mirror (10) with the aforementioned object glass (1) the aforementioned axis (18) with direction, the surface which is vertical to the aforementioned axis (11) through 2 reflections, later the aforementioned 2nd mirror (10) plane surface (6 and 16) with the aforementioned 2nd mirror and the aforementioned transmitted territory (19) with it absorbs between the aforementioned 2nd mirror (10) the aforementioned transmitted territory (19) in those which are arranged outside,Layer (15) the object glass which features that it is arranged.< Selective figure >Figure 1斜視硬性内視鏡の対物レンズ(1)であって、前記対物レンズ(1)の軸線(18)に対して傾斜した平らな接合面(6、16)で互いに隣接した2つのプリズム(4、7)から成るプリズム組立体を有し、前記遠位プリズム(4)が前記対物レンズ(1)の視野方向(17)に垂直な遠位端面(3)を有し、前記端面から入射する光線(5)が前記遠位プリズム(4)と前記接合面(6、16)の透過領域(19)とを通して前記近位プリズム(7)に入射し、前記近位プリズム内で傾斜面(8)の第1鏡(9)と前記接合面(16)の第2鏡(10)とで2回反射後に前記対物レンズ(1)の前記軸線(18)の方向で、前記軸線に垂直な面(11)を通して出射し、前記第2鏡(10)が前記透過領域(19)の外側に配置されているものにおいて、前記第2鏡(10)の平面(6、16)で前記第2鏡と前記透過領域(19)との間に吸収層(15)が配置されていることを特徴とする対物レンズ。【選択図】図1
