JPH042322U - - Google Patents

Info

Publication number
JPH042322U
JPH042322U JP4079390U JP4079390U JPH042322U JP H042322 U JPH042322 U JP H042322U JP 4079390 U JP4079390 U JP 4079390U JP 4079390 U JP4079390 U JP 4079390U JP H042322 U JPH042322 U JP H042322U
Authority
JP
Japan
Prior art keywords
reflective surface
light
tilt sensor
lens
onto
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
JP4079390U
Other languages
Japanese (ja)
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 filed Critical
Priority to JP4079390U priority Critical patent/JPH042322U/ja
Publication of JPH042322U publication Critical patent/JPH042322U/ja
Pending legal-status Critical Current

Links

Landscapes

  • Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
  • Optical Recording Or Reproduction (AREA)

Description

【図面の簡単な説明】[Brief explanation of drawings]

第１図ａはこの考案の実施例であるチルトセン
サーを示す断面図、第１図ｂは同チルトセンサー
を示す平面図、第２図は実施例に用いられるフレ
ンネルレンズの変形例を示す断面図、第３図は従
来のチルトセンサーの例を示す正面図、第４図ａ
およびｂは従来のチルトセンサーの他の例を示す
断面図である。 １……発光ダイオード、２……２分割受光素子
、３……フレンネルレンズ、４……遮蔽壁、５…
…ベース、６……ハウジング、７……光デイスク
、８……凸レンズ。 Fig. 1a is a cross-sectional view showing a tilt sensor that is an embodiment of this invention, Fig. 1b is a plan view showing the same tilt sensor, and Fig. 2 is a cross-sectional view showing a modified example of the Fresnel lens used in the embodiment. Figure 3 is a front view showing an example of a conventional tilt sensor, and Figure 4a is a front view showing an example of a conventional tilt sensor.
and b are cross-sectional views showing other examples of conventional tilt sensors. 1... Light emitting diode, 2... 2-split light receiving element, 3... Fresnel lens, 4... Shielding wall, 5...
...Base, 6...Housing, 7...Optical disk, 8...Convex lens.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 光源から発散される光を光デイスクの反射面に
集め、この反射面から反射される光を受光素子に
結像するレンズとしてフレンネルレンズを用いた
ことを特徴とする光ピツクアツプのチルトセンサ
ー。 A tilt sensor for an optical pickup characterized by using a Fresnel lens as a lens that collects light emitted from a light source onto a reflective surface of an optical disk and forms an image of the light reflected from this reflective surface onto a light receiving element.
JP4079390U 1990-04-17 1990-04-17 Pending JPH042322U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4079390U JPH042322U (en) 1990-04-17 1990-04-17

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4079390U JPH042322U (en) 1990-04-17 1990-04-17

Publications (1)

Publication Number Publication Date
JPH042322U true JPH042322U (en) 1992-01-09

Family

ID=31550891

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4079390U Pending JPH042322U (en) 1990-04-17 1990-04-17

Country Status (1)

Country Link
JP (1) JPH042322U (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6437731A (en) * 1987-07-31 1989-02-08 Ricoh Kk Optical information recording and reproducing device
JPH0223546A (en) * 1988-07-12 1990-01-25 Matsushita Electric Ind Co Ltd Optical head device
JPH02192040A (en) * 1989-01-20 1990-07-27 Ricoh Co Ltd Optical pickup device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6437731A (en) * 1987-07-31 1989-02-08 Ricoh Kk Optical information recording and reproducing device
JPH0223546A (en) * 1988-07-12 1990-01-25 Matsushita Electric Ind Co Ltd Optical head device
JPH02192040A (en) * 1989-01-20 1990-07-27 Ricoh Co Ltd Optical pickup device

Similar Documents

Publication Publication Date Title
JPH042322U (en)
JPS5937648U (en) Reflective optical sensor device
JPH0250823U (en)
JPS63122862U (en)
JPS6345516U (en)
JPH0448524U (en)
JPS62184404U (en)
JPS59168120U (en) optical micro switch
JPH045760U (en)
JPS62161045U (en)
JPH0317583U (en)
JPH0358667U (en)
JPS6397255U (en)
JPH0350703U (en)
JPH0267251U (en)
JPH0337439U (en)
JPH03119255U (en)
JPS6339219U (en)
JPH01136929U (en)
JPS62190929U (en)
JPH031546U (en)
JPS6430473U (en)
JPS5854620U (en) Information transmission device between lens barrel and camera body
JPS6234352U (en)
JPH0464720U (en)