JPS54136825A - Lighting device in imaging optical system - Google Patents

Lighting device in imaging optical system

Info

Publication number
JPS54136825A
JPS54136825A JP4442678A JP4442678A JPS54136825A JP S54136825 A JPS54136825 A JP S54136825A JP 4442678 A JP4442678 A JP 4442678A JP 4442678 A JP4442678 A JP 4442678A JP S54136825 A JPS54136825 A JP S54136825A
Authority
JP
Japan
Prior art keywords
lighting
transmission body
section
face
original
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
JP4442678A
Other languages
Japanese (ja)
Inventor
Nobuyuki Yanagawa
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.)
Ricoh Co Ltd
Original Assignee
Ricoh Co Ltd
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 Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP4442678A priority Critical patent/JPS54136825A/en
Publication of JPS54136825A publication Critical patent/JPS54136825A/en
Pending legal-status Critical Current

Links

Landscapes

  • Microscoopes, Condenser (AREA)
  • Light Sources And Details Of Projection-Printing Devices (AREA)

Abstract

PURPOSE: To make possible slit lighting of good lighting efficiency free from uneven lighting by using a special condensing type optical transmission body.
CONSTITUTION: A special condensing type transmission body 5 is so disposed between the original face 2 and photosensitive face 3 that its image focal point Q slightly above the original plane 2. A light source 6 is disposed in its object focal point P and the light from the light source 6 is condensed slghtly above of the original face 2, by which constant slit lighting on the original face 2 is accomplished. The transmission body 5 is a transparent body such as of glass whose section assumes a regular square and when the refractive index of the center 0 of its section is let to be n0 and its constant to be a, the refractive index at the point x from the center 0 in the direction x parallel to one arbitrary side is expressed by n0(1-ax2/2), thus the refractive indices in the direction z perpendicular to this section are uniform.
COPYRIGHT: (C)1979,JPO&Japio
JP4442678A 1978-04-15 1978-04-15 Lighting device in imaging optical system Pending JPS54136825A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4442678A JPS54136825A (en) 1978-04-15 1978-04-15 Lighting device in imaging optical system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4442678A JPS54136825A (en) 1978-04-15 1978-04-15 Lighting device in imaging optical system

Publications (1)

Publication Number Publication Date
JPS54136825A true JPS54136825A (en) 1979-10-24

Family

ID=12691156

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4442678A Pending JPS54136825A (en) 1978-04-15 1978-04-15 Lighting device in imaging optical system

Country Status (1)

Country Link
JP (1) JPS54136825A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4859034A (en) * 1981-12-28 1989-08-22 Seiko Epson Corporation Liquid crystal optical printing apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4859034A (en) * 1981-12-28 1989-08-22 Seiko Epson Corporation Liquid crystal optical printing apparatus

Similar Documents

Publication Publication Date Title
JPS5762052A (en) Original plate to be projected for use in transmission
JPS57181516A (en) Heterogeneous refractive index lens
JPS57161825A (en) Compound eye projecting device
JPS5567635A (en) Focus matching detector
JPS54121149A (en) Fresnel lens and condenser using this
JPS54136825A (en) Lighting device in imaging optical system
JPS51149004A (en) Optical apparatus
JPS5228338A (en) High output light beam focusing lens system
JPS52130631A (en) Photographic lens of large aperture and super wide angle
JPS57172309A (en) Coupling method of optical fiber and optical waveguide
FR2304933A1 (en) OPTICAL DEVICE ALLOWING TO FOCUS THE LIGHT ON A DETERMINED SURFACE OR POINT, FOR THE TRANSFER OR OBSERVATION OF AN IMAGE
JPS5364489A (en) Photo semiconductor device
JPS54111218A (en) Image pickup unit
JPS51144229A (en) Bright wide-angle lens with many surrounding quantities of light
JPS5342845A (en) Photo coupling device
JPS5546703A (en) Photo multiple distributor
JPS5293234A (en) Color separation optic for color television camera
JPS5237444A (en) Lens for infrared rays
SU624187A1 (en) Wide-aperture objective lens
JPS53122426A (en) Projector
JPS5364487A (en) Semiconductor laser device
JPS5546729A (en) Finder optical system
JPS5374084A (en) Measuring method for refractive index distribution of optical transmission path
SU678447A1 (en) Projection objective
SU705403A1 (en) Nephelometer