JPS5457952A - Mask presence detector for color receiving tube - Google Patents
Mask presence detector for color receiving tubeInfo
- 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
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
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)
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 |
-
1977
- 1977-10-18 JP JP12495977A patent/JPS5457952A/en active Pending
Cited By (2)
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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