JPS6466628A - Camera - Google Patents

Camera

Info

Publication number
JPS6466628A
JPS6466628A JP22457187A JP22457187A JPS6466628A JP S6466628 A JPS6466628 A JP S6466628A JP 22457187 A JP22457187 A JP 22457187A JP 22457187 A JP22457187 A JP 22457187A JP S6466628 A JPS6466628 A JP S6466628A
Authority
JP
Japan
Prior art keywords
focusing
light
mirror
sensor
lens
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP22457187A
Other languages
Japanese (ja)
Inventor
Takatoshi Ishii
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to JP22457187A priority Critical patent/JPS6466628A/en
Publication of JPS6466628A publication Critical patent/JPS6466628A/en
Pending legal-status Critical Current

Links

Landscapes

  • Automatic Focus Adjustment (AREA)
  • Focusing (AREA)
  • Viewfinders (AREA)

Abstract

PURPOSE:To facilitate and to make sure focusing when a telephoto lens is used by using a focusing plate whose center part is transparent. CONSTITUTION:Light from an object which passes through an objective lens 31 is partly reflected by a half mirror 32. At the same time, a part of it penetrates the mirror 32, is reflected by a mirror 41 and is made incident on a focusing sensor 42. Reflected light by the mirror 32 passes through a transparent part 20 in the center part of the focusing plate and a pentagonal prism 33 and forms an image by an objective lens 34. A focusing plate 10 provided with the transparent part 20 is used so as to decrease the amount of the light from the object transmitted to the side of the focusing plate 10 and to increase the amount of the light from the object transmitted to the side of the sensor 42. As a result, even when the telephoto lens is used, excellent automatic focusing is performed through the sensor 42 and a focusing state can be confirmed through the lens 34.
JP22457187A 1987-09-08 1987-09-08 Camera Pending JPS6466628A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP22457187A JPS6466628A (en) 1987-09-08 1987-09-08 Camera

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP22457187A JPS6466628A (en) 1987-09-08 1987-09-08 Camera

Publications (1)

Publication Number Publication Date
JPS6466628A true JPS6466628A (en) 1989-03-13

Family

ID=16815846

Family Applications (1)

Application Number Title Priority Date Filing Date
JP22457187A Pending JPS6466628A (en) 1987-09-08 1987-09-08 Camera

Country Status (1)

Country Link
JP (1) JPS6466628A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005164914A (en) * 2003-12-02 2005-06-23 Nikon Corp Camera finder device and camera

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005164914A (en) * 2003-12-02 2005-06-23 Nikon Corp Camera finder device and camera

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