CAMERA MODULE AND FOLDED OPTICAL SYSTEM FOR LASER-BASED SPEED GUN

• US 20170285444A1
• Filed: 03/29/2017
• Published: 10/05/2017
• Est. Priority Date: 03/31/2016
• Status: Active Grant

• Current Assignee: Kama-Tech (HK) Limited, Laser Technology Incorporated (Laser Technology)
• Original Assignee: Kama-Tech (HK) Limited, Laser Technology Incorporated (Laser Technology)
• Inventors: Dunne, Jeremy G.
• Granted Patent: US 10,146,103 B2
• Time in Patent Office: Days
• CPC Class Codes: G01S 13/92 for velocity measurement
• CPC Class Codes: G01S 17/58 Velocity or trajectory determination systems; Sense-of-movement determination systems
• CPC Class Codes: G01S 17/86 Combinations of lidar systems with systems other than lidar, radar or sonar, e.g. with direction finders
• CPC Class Codes: G01S 17/88 Lidar systems specially adapted for specific applications
• CPC Class Codes: G02B 17/008 Systems specially adapted to form image relays or chained systems
• CPC Class Codes: G03B 13/08 with reflected image of frame
• CPC Class Codes: G03B 13/36 Autofocus systems
• CPC Class Codes: G03B 17/17 with reflectors arranged in beam forming the photographic image, e.g. for reducing dimensions of camera
• CPC Class Codes: G03B 17/48 adapted for combination with other photographic or optical apparatus
• CPC Class Codes: G08G 1/054 photographing overspeeding vehicles
• CPC Class Codes: H04N 23/51 Housings
• CPC Class Codes: H04N 23/55 Optical parts specially adapted for electronic image sensors; Mounting thereof
• CPC Class Codes: H04N 23/635 Region indicators; Field of view indicators

Abstract

A laser-based speed gun includes a camera module and a folded optical system including an objective lens and an eyepiece lens. The folded optical system includes first and second image redirecting elements for redirecting an image pathway from the objective lens to the eyepiece lens adjacent the camera module.

Claims

1. A laser-based speed gun comprising:

a camera module; and

a folded optical system comprising an objective lens and an eyepiece lens, having first and second image redirecting elements for redirecting an image pathway from said objective lens to said eyepiece lens adjacent said camera module.

2. The laser-based speed gun of claim 1 wherein said camera module comprises an autofocus mechanism.

3. The laser-based speed gun of claim 2 wherein said camera module comprises a cellular telephone camera module.

4. The laser-based speed gun of claim 1 wherein a ratio of said objective lens to said eye-piece lens is substantially 12.5.

5. The laser-based speed gun of claim 1 wherein said objective lens is substantially 150 mm and said eyepiece lens is substantially 12 mm.

6. The laser-based speed gun of claim 1 wherein said first and second image redirecting elements comprise mirrors.

7. The laser-based speed gun of claim 1 further comprising:

a spacer block interposed between said eyepiece lens and said camera module.