JPS5457952A - Mask presence detector for color receiving tube - Google Patents

Mask presence detector for color receiving tube

Info

Publication number
JPS5457952A
JPS5457952A JP12495977A JP12495977A JPS5457952A JP S5457952 A JPS5457952 A JP S5457952A JP 12495977 A JP12495977 A JP 12495977A JP 12495977 A JP12495977 A JP 12495977A JP S5457952 A JPS5457952 A JP S5457952A
Authority
JP
Japan
Prior art keywords
mask
light
switch
glass beads
shelf
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
JP12495977A
Other languages
Japanese (ja)
Inventor
Shinsaku Kobashi
Yasuki Nakano
Hideki Yamamoto
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP12495977A priority Critical patent/JPS5457952A/en
Publication of JPS5457952A publication Critical patent/JPS5457952A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To detect precisely the presence of a mask by setting glass beads in a tight-nest state on a plane of the shelf for mask transfer and covering the plane with a transparent plate and arranging a photoelectric switch having a light supplying and receiving function in the position opposite to the mask.
CONSTITUTION: Glass beads sheet 32 which is obtained by fixing glass beads 33 in a tight-nest state on a plane is provided at the bottom of shelf 31, and transparent plate 34 covers over this sheet. Meanwhile, mask 12 is put on transparent plate 34. Then, photoelectric switch 36 having a light supplying and receiving function is provided in the side opposite to the mask. As a result, when the mask exists, the light from switch 36 is absorbed by the mask, and the reflection light is not generated. When the mask does not exist, the light supplied from switch 36 has the reflection light inputted surely to switch 36 due to the scattering effect of glass beads 33 even if shelf 31 is inclined greatly, so that the presence of the mask can be detected
COPYRIGHT: (C)1979,JPO&Japio
JP12495977A 1977-10-18 1977-10-18 Mask presence detector for color receiving tube Pending JPS5457952A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12495977A JPS5457952A (en) 1977-10-18 1977-10-18 Mask presence detector for color receiving tube

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12495977A JPS5457952A (en) 1977-10-18 1977-10-18 Mask presence detector for color receiving tube

Publications (1)

Publication Number Publication Date
JPS5457952A true JPS5457952A (en) 1979-05-10

Family

ID=14898444

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12495977A Pending JPS5457952A (en) 1977-10-18 1977-10-18 Mask presence detector for color receiving tube

Country Status (1)

Country Link
JP (1) JPS5457952A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10013806B2 (en) 2014-04-18 2018-07-03 Magic Leap, Inc. Ambient light compensation for augmented or virtual reality

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10013806B2 (en) 2014-04-18 2018-07-03 Magic Leap, Inc. Ambient light compensation for augmented or virtual reality
US10262462B2 (en) 2014-04-18 2019-04-16 Magic Leap, Inc. Systems and methods for augmented and virtual reality

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