IP Library Granted Patent US 12,504,722
Granted Patent B2
US 12,504,722 · App. 18/189,378 · Granted Dec 23, 2025

Detection device and timepiece

Inventor: Tomoyasu Kurokawa (Kokubunji, JP)
Assignee: CASIO COMPUTER CO., LTD.
G04G21/025G04G17/04
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Quick Facts
Patent No.
US 12,504,722
App. No.
18/189,378
Granted
Dec 23, 2025
Kind
B2
Abstract

A detection device including a device main body and a display arranged on an upper side of the device main body, in which the device main body is provided with a window for conducting a waterproof test.

Claims (27)

1 . A detection device comprising:

a device main body;

a display arranged on an upper side of the device main body;

a light receiving window provided in the device main body and corresponding to a light receiving element; and

a light emitting window for conducting a waterproof test, the light emitting window being provided in the device main body and corresponding to a light emitting element,

wherein a surface area of the light emitting window is larger than a surface area of the light receiving window.

2 . The detection device according to claim 1 , wherein the light emitting window is larger than the light emitting element and the light emitting element is arranged beneath a portion of the light emitting window closer to the light receiving element.

3 . The detection device according to claim 1 , wherein the device main body comprises a first light block having a frame shape surrounding the light receiving element, and a second light block having a frame shape surrounding the light emitting element.

4 . The detection device according to claim 2 , wherein the device main body comprises a first light block having a frame shape surrounding the light receiving element, and a second light block having a frame shape surrounding the light emitting element.

5 . The detection device according to claim 1 , further comprising a light blocking member surrounding the light receiving element except for a light receiving area.

6 . The detection device according to claim 2 , further comprising a light blocking member surrounding the light receiving element except for a light receiving area.

7 . The detection device according to claim 3 , further comprising a light blocking member surrounding the light receiving element except for a light receiving area.

8 . The detection device according to claim 4 , further comprising a light blocking member surrounding the light receiving element except for a light receiving area.

9 . The detection device according to claim 1 , further comprising the light emitting element, wherein the light emitting element comprises a first light emitting element configured to emit light of a red wavelength and a second light emitting element configured to emit light of an infrared wavelength.

10 . The detection device according to claim 2 , further comprising the light emitting element, wherein the light emitting element comprises a first light emitting element configured to emit light of a red wavelength and a second light emitting element configured to emit light of an infrared wavelength.

11 . The detection device according to claim 3 , further comprising the light emitting element, wherein the light emitting element comprises a first light emitting element configured to emit light of a red wavelength and a second light emitting element configured to emit light of an infrared wavelength.

12 . The detection device according to claim 4 , further comprising the light emitting element, wherein the light emitting element comprises a first light emitting element configured to emit light of a red wavelength and a second light emitting element configured to emit light of an infrared wavelength.

13 . The detection device according to claim 9 , wherein the first light emitting element and the second light emitting element are adjoiningly arranged such that distances thereof to the light receiving element are equal to each other.

14 . The detection device according to claim 10 , wherein the first light emitting element and the second light emitting element are adjoiningly arranged such that distances thereof to the light receiving element are equal to each other.

15 . The detection device according to claim 1 , further comprising the light emitting element, wherein the light emitting element is configured to emit light of a green wavelength.

16 . The detection device according to claim 2 , further comprising the light emitting element, wherein the light emitting element is configured to emit light of a green wavelength.

17 . A timepiece comprising the detection device according to claim 1 .

18 . The timepiece according to claim 17 , further comprising:

a timepiece case,

wherein the display is arranged in the timepiece case,

wherein the device main body is a back cover attached to a back surface of the timepiece case.

19 . The timepiece according to claim 17 , wherein the light emitting window and the light receiving window are arranged side by side in three o'clock and nine o'clock directions of the timepiece.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 24, 2023
From: KUROKAWA, TOMOYASU
To: CASIO COMPUTER CO., LTD.
Reel/Frame 063090/0477 →
Priority Claims (1)
JP 2022-047803 · Mar 24, 2022 · national
Continuity (1)
Related Publication 20230305499A1 · Sep 28, 2023
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