JPH04138246U - Pyroelectric infrared detector - Google Patents

Abstract

(57) [Summary] [Purpose] To develop a pyroelectric infrared detector that has a structure that does not require expensive special welding machines without impairing conventional characteristics, and at the same time reduces costs by simplifying the process. provide. [Structure] A pyroelectric infrared detector with a structure that maintains airtightness by mounting an optical filter on a base that has a space for attaching an optical filter that transmits infrared rays and sealing it with adhesive. [Effect] It becomes possible to manufacture an inexpensive pyroelectric infrared detector without impairing conventional characteristics.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention is particularly suitable for use in non-contact temperature detection, human body detection, etc., which requires low cost. This invention relates to a structure for manufacturing an infrared detector without impairing conventional characteristics.

0002

[Conventional technology]

FIG. 3 shows the structure of a general pyroelectric infrared detector. In this way, infrared rays are transmitted The optical filter is attached with adhesive to the CAN, which serves as a shield case. It is. Also, the metal on which components such as wiring boards, support stands, and pyroelectric elements are mounted. The base is welded with a welding machine to maintain airtightness. In this case, dense It is necessary to introduce an expensive special welding machine to seal the seal, and the process requires first sealing. Attach the optical filter to the CAN, which will become the case, and then melt it with the metal base. Since it is a two-step process of contacting, it has the disadvantage of being complicated.

0003

[Problem that the idea aims to solve]

This invention eliminates the need to use an expensive special welding machine for airtight sealing. The aim is to reduce costs through simplification.

0004

[Means to solve the problem]

This invention was made to solve the above problems, and it does not impair the conventional characteristics. The structure does not require expensive special welding machines, and the process is simplified. The present invention provides a pyroelectric infrared detector that achieves cost reduction. main idea The proposed pyroelectric infrared detector requires a space to attach an optical filter that transmits infrared rays. The optical filter is mounted on a base with a base and hermetically sealed with adhesive, etc. This structure maintains airtightness.

[0005]

[Effect]

This method creates a structure that does not require welding the base and shield case. , the introduction of expensive specialized welding machines is avoided, and at the same time, the process is simplified and traditional features are not required. Costs are reduced without sacrificing performance.

[0006]

【Example】

FIG. 1 shows the structure of an embodiment of the present invention. Above is the space for mounting the optical filter. Components such as the wiring board, support stand, and pyroelectric element are soldered inside the metal base provided in the section. Adhesive and connect. Furthermore, there is an optical filter in the space provided at the top. Mount it and fix it with adhesive, etc. FIG. 2 shows a top view in this case. base and light The shape of the optical filter mounting part and optical filter is square, but it is limited to this. No. This maintains the airtightness inside the metal base. In this example, metal Although an example of a base is shown, resin, ceramic, composite material, etc. may also be used.

[0007]

[Effect of the idea]

With this invention, we can manufacture inexpensive pyroelectric infrared detectors without sacrificing conventional characteristics. It is expected to be applied in a wide range of applications, and has industrial value.

[Brief explanation of drawings]

FIG. 1 shows a side view of an embodiment of the invention.

FIG. 2 shows a top view of the embodiment of FIG. 1;

FIG. 3 each shows a side view of a conventional infrared detector.

[Explanation of symbols] 1 Shield case 2 Adhesive 3 Pyroelectric element 4 Support stand 5 Optical filter 6 Wiring board 7 Metal base 8 Inner lead 9 FET

Claims (1)

[Scope of utility model registration request] Claim: A pyroelectric infrared detector characterized in that an optical filter that transmits infrared rays is directly attached to the base of the detector itself.