JPH0181612U

JPH0181612U -

Info

Publication number: JPH0181612U
Application number: JP1987175728U
Authority: JP
Priority date: 1987-11-19
Filing date: 1987-11-19
Publication date: 1989-05-31

Description

[Brief explanation of the drawing]

第１図および第２図は、共に本考案の一実施例
に係る自動焦点カメラの投光装置を従来の自動焦
点カメラに適用した状態の全体構成を示し、この
うち、第１図は、測距光学系を模式的に示す平面
断面図、第２図は、外観を示す斜視図、第３図お
よび第４図は、それぞれ上記実施例とは異なる２
つの変形例を示し、このうち、第３図は、投光光
学系に集光用レンズを配設した投光装置を示す平
面断面図、第４図は、投光装置にテレコンバータ
レンズを付設したテレコンバータ付投光装置を示
す斜視図、第５図および第６図は、共に従来の自
動焦点カメラを示し、このうち、第５図は、測距
光学系を模式的に示す平面断面図、第６図は、外
観を示す斜視図である。１……カメラ本体、２……光源、３……投光レ
ンズ、３ａ……投光レンズ光軸、３ｂ……投射光
、４……投光装置、５……延長筒、５ａ……受光
窓、６……第１ミラー、７……第２ミラー、８…
…実投射光、８ａ……実投射光軸、９……投光窓
、１０〜１２……被写体、１３〜１５……反射光
、１６……結像レンズ、１６ａ……結像レンズ光
軸、１７〜１９……スポツト位置、２０……位置
検出センサ、２１……挾持部、２２……撮像レン
ズ鏡胴、２３……テレコンバータレンズ、２４…
…集光用レンズ、２７……連接部、２８……テレ
コンバータ付投光装置。 1 and 2 both show the overall configuration of a conventional autofocus camera in which a light projection device for an autofocus camera according to an embodiment of the present invention is applied. FIG. 2 is a plan cross-sectional view schematically showing the distance optical system, FIG. 2 is a perspective view showing the external appearance, and FIGS.
Two modified examples are shown, of which Figure 3 is a plan sectional view showing a light projector in which a light condensing lens is provided in the light projecting optical system, and Figure 4 is a plan view showing a light projector in which a teleconverter lens is attached to the light projector. FIGS. 5 and 6 are a perspective view showing a teleconverter-equipped floodlighting device, and FIGS. 5 and 6 both show a conventional autofocus camera, and FIG. 5 is a plan cross-sectional view schematically showing a distance measuring optical system. , FIG. 6 is a perspective view showing the external appearance. 1... Camera body, 2... Light source, 3... Light projection lens, 3a... Light projection lens optical axis, 3b... Projection light, 4... Light projection device, 5... Extension tube, 5a... Light receiving Window, 6...first mirror, 7...second mirror, 8...
...Actual projection light, 8a...Actual projection optical axis, 9...Light projection window, 10-12...Subject, 13-15...Reflected light, 16...Imaging lens, 16a...Imaging lens optical axis , 17-19... Spot position, 20... Position detection sensor, 21... Holding part, 22... Imaging lens barrel, 23... Teleconverter lens, 24...
...Condensing lens, 27...Connection section, 28...Light projection device with teleconverter.

Claims

[Scope of Claim for Utility Model Registration] (1) A projection lens for projecting distance-measuring projection light toward the subject; In a light projection device for an autofocus camera, the light projection device has an imaging lens that receives reflected light obtained by reflecting at a first mirror disposed in front of the optical axis of the lens to receive the projected light and reflect it in a direction away from the imaging lens; and a first mirror disposed at a predetermined distance from the first mirror. and a second mirror that receives the reflected light from the first mirror and projects the reflected light toward the subject, and by attaching the light projecting optical system, the baseline A light projection device for an autofocus camera, characterized in that the light projection device is configured to equivalently increase the length. (2) Utility model registration claim 1, characterized in that the projection optical system is provided with at least one condensing lens in its optical path to improve condensing performance. A floodlight device for the autofocus camera described. (3) The light projection device for an autofocus camera according to claim 1, wherein at least one of the first mirror and the second mirror is a concave mirror.